Home

User Manual Radio Modules deRFmega128

1. RFGND pad dimension 0 9 x 1 6 mm round RFOUT pad diameter 0 6 mm Figure 8 RF pad geometry deRFmega128 22M12 top view www dresden elektronik de Page 15 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 6 Soldering profile Table 7 shows the recommended soldering profile for the radio modules Table 7 Soldering Profile Profile Feature Values Average Ramp up Rate 217 C to Peak 3 C s max Preheat Temperature 175 C 25 C 180 s max Temperature Maintained Above 217 C 60 sto 150s Time within 5 C of Actual Peak Temperature 20 sto 40 s Peak Temperature Range 260 C Ramp down Rate 6 C s max Time 25 C to Peak Temperature 8 min max Figure 9 shows a recorded soldering profile for a radio module The blue colored line illustrates a temperature sensor placed next to the soldering contacts of the radio module The pink line shows the set temperatures depending on the zone within the reflow soldering machine 280 260 240 220 200 180 160 140 120 100 80 60 40 T C 2 4 6 8 100 120 140 160 180 200 220 240 260 280 300 320 340 360 t m s Measured Temp Zone Temp Figure 9 Recorded soldering profile A solder process withou
2. 32 149 PE3 OC3A AIN1 33 15 PE4 OC3B INT4 34 51 PES OC3C INT5 35 l NC Leave unconnected 36 l NC Leave unconnected 37 29 PD4 ICP1 38 60 AVDD 39 62 AREF 40 63 PFO ADCO ADC 41 64 PF1 ADC1 ADC 42 PF2 ADC2 DIG2 ADC 43 2 PF3 ADC3 DIG4 External Front End control 44 l GND 45 16 PF7 ADC7 TDI JTAG 46 5 PF6 ADC6 TDO JTAG 47 14 PF5 ADC5 TMS JTAG 48 13 PF4 ADC4 TCK JTAG 49 l GND 50 J VCC 1 8 V to 3 6 V 51 GND 52 l RFGND 53 l RFOUT 50 Q impedance 54 l RFGND 55 J RFGND Note PG4 TOSC1 and PG3 TOSC2 are internally connected to a 32 768 kHz crystal www dresden elektronik de Page 22 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 7 2 1 External front end and antenna diversity control The radio module deRFmega128 22M10 offers the possibility to control external front end components and to support antenna diversity Table 10 and Table 11 show the logic values of the control signals A logic 0 is specified with a voltage level of O V to 0 3 V A logic 1 is specified with a value of VCC 0 3 V to 3 6 V An application circuit is shown in Section 10 5 Antenna Diversity The antenna diversity algorithm is enabled with setting bit ANT_DIV_EN 1 in the ANT_DIV register The external control of RF switches must be enabled by bit ANT_EXT_SW_EN of the same register This actio
3. 15 User Manual Version 1 0 OEM radio modules deRFmega Table 12 I O port pin to LGA pad mapping for deRFmega128 22M12 UO port pin mapping LGA MCU Primary Alternate functions Comments Pad Pin function 1 GND 2 VCC 2 0 V to 3 6 V 3 11 TST Must be connected to GND 4 12 RSTN Reset 5 13 RSTON Reset output 6 14 PGO DIG3 Internal connected to PA CTX 7 15 PG1 DIG1 Internal connected to PA ANTSEL 8 16 PG2 AMR 9 19 PG5 OCOB 10 153 PE7 ICP3 INT7 CLKO 11 152 DEG T3 INT6 Timer3 12 28 PD3 TXD1 INT3 UART1 13 27 PD2 RXD1 INT2 UART1 14 133 CLKI External clock input 15 132 PD7 TO 16 25 PDO SCL INTO TWI 17 26 PD1 SDA INT1 TWI 18 130 PD5 XCK1 19 131 PD6 T1 Internal connected to PA CSD 20 36 PBO SS PCINTO SPI 21 138 PB2 MOSI PDI PCINT2 GPL ISP 22 37 PB1 SCK PCINT1 SPI 23 39 PB3 MISO PDO PCINT3 SPI ISP 24 40 PB4 OC2A PCINT4 25 41 PB5 OC1A PCINT5 26 42 PB6 OC1B PCINT6 27 43 PB7 OCOA OC1C PCINT7 28 46 PEO RXDO PCINT8 UARTO 29 47 PE1 TXDO UARTO 30 48 PE2 XCKO AINO UARTO See Section 7 3 1 www dresden elektronik de Page 25 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 31 l GND 32 49 PE3 OC3A AIN1 33 15 PE4 OC3B INT4 34 51
4. Frequency range PHY_CC_CCA 0x0B 0x1A 2405 2480 MHz Channels PHY_CC_CCA 0x0B 0x1A 16 Transmitting TX_PWR 0x00 2 3 2 9 dBm power conducted Receiver sensitivity Data Rate 250 kBit s TBD dBm Data Rate 500 kBit s TBD dBm Data Rate 1000 kBit s TBD dBm Data Rate 2000 kBit s TBD dBm Operating the transmitter at channel 26 requires to ensure a duty cycle lt 30 www dresden elektronik de Page 11 of 47 User Manual Version 1 0 2012 10 15 OEM radio modules deRFmega Data rate gross TRX_CTRL_2 0x00 250 kBit s TRX_CTRL_2 0x01 500 kBit s TRX_CTRL_2 0x02 1000 kBit s TRX_CTRL_2 0x03 2000 kBit s Table 6 Radio data of deRFmega128 22M12 Radio Supply voltage VCC 3 3V Parameter feature Min Typ Max Unit RF pad Impedance 50 Q Diversity Yes Range TBD m Frequency range 2405 2480 MHz Channels 16 Transmitting 20 9 21 5 21 8 dBm power conducted Receiver sensitivity Data Rate 250 kBit s TBD dBm Data Rate 500 kBit s TBD dBm Data Rate 1000 kBit s TBD dBm Data Rate 2000 kBit s TBD dBm Data rate gross TRX_CTRL_2 0x00 250 kBit s TRX_CTRL_2 0x01 500 kBit s TRX_CTRL_2 0x02 1000 kBit s TRX_CTRL_2 0x03 2000 kBit s www dresden elektronik de Page 12 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 5 Mechanical size The following section shows
5. H Storage T storage 40 125 C temperature range Table 3 Electrical data Electrical deRFmega128 22M00 and deRFmega128 22M10 Parameter Min Typ Max Unit Supply Voltage VCC 1 8 3 3 3 6 V Current Itxon TX_PWR 3 dBm 17 8 18 1 18 2 mA consumption Lon TX_PWR 0 dBm 16 2 16 4 165 mA ltxon TX_PWR 17 dBm 12 5 12 7 12 7 mA IRxon 17 5 17 6 17 7 mA liae Txoff MCK 8MHz 4 7 4 8 48 mA Isieep lt 1 HA depends on Sleep Mode deRFmega128 22M12 Parameter Min Typ Max Unit Supply Voltage VCC 2 0 3 3 3 6 V www dresden elektronik de Page 10 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega Current brxon TX PWR 20dBm 119 4 197 7 205 2 mA ve ltxon TX PWR 4 dBm 27 0 46 1 46 7 mA leser 19 8 225 228 mA lise Txoff MCK 8 MHz 52 5 4 56 mA Isieep lt 1 HA depends on Sleep Mode Table 4 Quartz crystal properties Quartz crystal Parameter Min Typ Max Unit Watch crystal Frequency 32 768 kHz Frequency tolerance 20 ppm Transceiver crystal Frequency 16 000 MHz Frequency tolerance 10 ppm Table 5 Radio data of deRFmega128 22M00 and deRFmega128 22M10 Radio 2 4 GHz Supply voltage VCC 3 3V Parameter feature Min Typ Max Unit Antenna Type Chip ceramic Gain 0 7 dBi Diversity No RF Pad Impedance 50 Q Range Line of sight TBD m
6. e a a a E 37 Application og 1 00 SJ 38 fN EN Tossal 38 VP 38 EE ENE RR RE 38 Te GE REE EE ER EE 39 10 5 External front end and antenna diversity ee 40 a A LINA aaa idaan saa aena nia kakaa Rakata 42 Pre flashed firmware ooooonococccccnncccconononnnnncnnnnncnnnnnnnnnnnnnnnnn nn anne nn nn rnnn nr ne nnnnnnnnnrrennnnnnnnnnns 42 Adapter boards iii A As 42 www dresden elektronik de Page 2 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 14 Radio O tl 43 14 1 United Siebert egener 43 14 2 European Union EI SN EE 43 14 3 Approved antennas rrrnnrrnnnnrnnnnnnrrnrrrnnnnrrnnnnrrrrtrennnnrnnnnssnnteennnnnnnnnseenrsenennsnnnnne 43 15 Ordering Mir Ve 44 16 Packaging dimensi E 45 17 Revision NOUS usina aia iodo das 45 18 Referentes ennnen ennnen nnna nean nannaa anaana annaa 46 www dresden elektronik de Page 3 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega Document history 2012 10 15 Initial version www dresden elektronik de Page 4 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega Abbreviations Abbreviation Description IEEE 802 15 4 IEEE 802 15 4 standard applicable to low rate Wireless Personal Area Networks WPAN GLOWPAN IPv6 over Low Power Wireless Personal Area Networks A Analog to Digital Converter Consumer Electronics Electromagnetic Interference ETSI European Telecommunications Standards Ins
7. the mechanical dimensions of the different radio modules All distances are given in millimeters 5 1 deRFmega128 22M00 The module has a size of 23 6 x 13 2 mm and a height of 3 0 mm The LGA pads are arranged in a double row design Figure 4 shows the details from top view 13 20 Signal pad dimension 0 6 x 0 6 mm square Figure 4 Module dimension and signal pads geometry deRFmega128 22M00 top view www dresden elektronik de Page 13 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 5 2 deRFmega128 22M10 The module has a size of 19 0 x 13 2 mm and a height of 3 0 mm The LGA pads are arranged in a double row design The RF pads consist of three ground pads and one signal pad Figure 5 and Figure 6 shows the details from top view CT UU DUU DUU Signal pad dimension 0 6 x 0 6 mm square Figure 5 Module dimension and signal pad geometry deRFmega128 22M10 to
8. will effect a very poor radio performance Instead radio modules with RF pads could be placed everywhere on the PCB But it should be enough space for routing a RF trace to a coaxial connector or to an onboard antenna do D 8 ke derFmegat28 we E e 34450 0079 857 met 0000 227 C MAC 00 21 26 FF FF 00 7E FC MAC 00 21 26 FF FF 00 28q Figure 29 Placing in the center with antenna Figure 30 Placing in the center with RF pad Do not place ground areas below the radio module see Section 8 4 and near the chip antenna Y No Y Groundplane Figure 31 No ground plane under the module www dresden elektronik de Page 36 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 9 Clock The radio module contains an onboard 32 768 kHz 20 ppm quartz crystal for the MCU and a 16 000 MHz 10 ppm quartz crystal for the internal transceiver For optimum RF timing characteristics it is necessary to use a low tolerance crystal The watch crystal clocks a timer not the processor The timer is intended to wake up the processor periodically www dresden elektronik de Page 37 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 10 Application circuits 10 1 UART Two U S ART interfaces are available on the radio modules For communication to a host with a different supply voltage domain it is necessary to use a level shifter We recommend the USB level shifter by d
9. 8 22M10 and deRFmega128 22M12 modules documentation and ensure the final product does not exceed the specified power ratings antenna specifications and or installation requirements as specified in the user manual If any of these specifications are exceeded in the final product a submission must be made to a notified body for compliance testing to all required standards The CE marking must be affixed to a visible location on the OEM product The CE mark shall consist of the initials CE taking the following form e If the CE marking is reduced or enlarged the proportions must be respected e The CE marking must have a height of at least 5 mm except where this is not possible on account of the nature of the apparatus e The CE marking must be affixed visibly legibly and indelibly More detailed information about CE marking requirements can be found in 6 14 3 Approved antennas The deRFmega128 22M00 has an integrated chip antenna The design is fully compliant with all regulations The certification process is pending The deRFmega128 22M10 and deRFmega128 22M12 will be tested with external antennas The approved antenna list will be updated after certification process has finished www dresden elektronik de Page 43 of 47 User Manual Version 1 0 2012 10 15 15 Ordering information OEM radio modules deRFmega The product name includes the following information deRF XxxX XXX XX LU
10. A PD5 XCK1 PB2 MO0SI PB1 SCK Ok oN ow O ul gt F a a PE6 PD6 PBO Figure 12 Pad numbering and signal names of deRFmega128 22M00 top view www dresden elektronik de Page 17 of 47 User Manual Version 1 0 2012 10 15 OEM radio modules deRFmega Table 8 I O port pin to LGA pad mapping for deRFmega128 22M10 UO port pin mapping LGA MCU Primary Alternate functions Comments Pad Pin function GND 2 VCC 1 8 V to 3 6 V 3 11 TST Must be connected to GND 4 12 RSTN Reset 5 13 RSTON Reset output 6 14 PGO DIG3 7 15 PG1 DIG1 8 16 PG2 AMR 9 19 PG5 OCOB 10 153 PE7 ICP3 INT7 CLKO 11 52 PE6 T3 INT6 Timer3 12 28 PD3 TXD1 INT3 UART1 13 27 PD2 RXD1 INT2 UART1 14 33 CLKI External clock input 15 32 PD7 TO 16 25 PDO SCL INTO TWI 17 126 PD1 SDA INT 1 TWI 18 130 PD5 XCK1 19 131 PD6 T1 Timer1 20 36 PBO SS PCINTO SPI 21 38 PB2 MOSI PDI PCINT2 SPI ISP 22 37 PB1 SCK PCINT1 SPI 23 39 PB3 MISO PDO PCINT3 SPI ISP 24 140 PB4 OC2A PCINT4 25 141 PB5 OC1A PCINT5 26 142 PB6 OC1B PCINT6 27 143 PB7 OCOA OC1C PCINT7 28 146 PEO RXDO PCINT8 UARTO 29 47 PE1 TXDO UARTO 30 148 PE2 XCKO AINO UARTO 31 GND www dresden elektronik de Page 18 of 47 User Manual Version 1 0 2012 10 15 OEM radio modules deRFmega 32 49 PE3 OC3A J
11. AIN1 33 L PE4 OC3B SCJ INT4 34 51 PES OC3C INTE 35 l NC Leave unconnected 36 l NC Leave unconnected 37 29 PD4 ICP1 38 60 AVDD 39 62 AREF 40 63 PFO ADCO ADC 41 64 PF1 ADC1 ADC 42 PF2 ADC2 DIG2 ADC 43 2 PF3 ADC3 DIG4 44 l GND 45 16 PF7 ADC7 TDI JTAG 46 5 PF6 ADC6 TDO JTAG 47 4 PFS ADC5 TMS JTAG 48 3 PF4 ADC4 TCK JTAG 49 l GND 50 l VCC 1 8 V to 3 6 V 51 GND Note PG4 TOSC1 and PG3 TOSC2 are connected to a 32 768 kHz crystal internally www dresden elektronik de Page 19 of 47 2012 10 15 User Manua Keier OEM radio modules deRFmega 7 2 Signals of deRFmega128 22M10 The radio module deRFmega128 22M10 has 55 LGA pads The 1 marking is shown in Figure 14 Consider that the pin numbering in Figure 15 is shown from top view All LGA pads are listed in Table 9 RFOUT 0079 8671 I MAC 00 21 26 FF FF 00 1E FC pad 1 Figure 13 deRFmega128 22M10 top view Figure 14 deRFmega128 22M10 bottom view DGND UCC DGND PF4 TCK PF5 TMS PF6 TDO PF7 TDI DGND PF3 ADC3 D1G4 PF2 ADC2 DIG2 PF1 ADCL PFO ADCO AREF AVDD PES PE4 PE3 DGND Bo tel fel ka bd ho ba bl by a Bo PE2 XCKD SA rei tx00 RFOUT 30 Ds E gel f PBS DEND LC ei a res PB4 Al Gesten 2 4 k Bl hol 12 he jw kel bo p 4 B 6 2 BJ B Dr aa tat a x e 3 x Xx D D e BA e E D ARR B a ZONAS NON Fa NNN NON ZS Out EE OO a D D be UMN SS bh D a D WON a
12. DI Test Data In Input No pull up resistor on module TDO Test Data Out Output TDM Test Mode Select Input No pull up resistor on module Serial Programming PDI Data Input Input PDO Data Output Output SCK Serial Clock Input Reset RSTN Microcontroller Reset I O Low Pull Up resistor USART TXDO TXD1 Transmit Data RXDO RXD1 Receive Data XCKO XCK1 Serial Clock Timer Counter and PWM Controller OCOA OC3A Output Compare and PWM Output A for Timer Counter 0 to 3 OCOB OC3B Output Compare and PWM Output B for Timer Counter 0 to 3 Internal MCU Pull up resistor www dresden elektronik de Page 28 of 47 User Manual kg OEM radio modules deRFmega e OCOC OC3C Output Compare and PWM Output C for Timer Counter 0 to 3 TO T1 T3 Timer Counter 0 1 3 Clock Input Input ICP1 Timer Counter Input Capture Input ICP3 Trigger 1 and 3 Interrupt PCINTO Pin Change Interrupt Source 0 to 7 Output PCINT7 INTO INT7 External Interrupt Input 0 to7 Input SPI MISO SPI Master In Slave Out 1 0 MOSI SPI Master Out Slave In 1 0 SCK SPI Bus Serial Clock 1 0 SSN SPI Slave Port Select 1 0 Two Wire Interface SDA Two Wire Serial Interface Data IO No pull up resistor SCL Two Wire Serial Interface Clock I O No pull up resistor Analog to Digital Converter ADCO ADC7 Analog to Digital Conv
13. FES OC3C INTE 35 l NC Leave unconnected 36 l NC Leave unconnected 37 29 PD4 ICP1 38 60 AVDD 39 162 AREF 40 163 PFO ADCO ADC 41 164 PF1 ADC1 ADC 42 11 PF2 ADC2 DIG2 ADC 43 2 PF3 ADC3 DIG4 44 l GND 45 16 PF7 ADC7 TDI JTAG 46 5 PF6 ADC6 TDO JTAG 47 4 DES ADC5 TMS JTAG 48 13 PF4 ADC4 TCK JTAG 49 GND 50 VCC 2 0 V to 3 6 V 51 J GND 52 RFGND 53 RFOUT1 50 Q impedance 54 RFGND 55 RFGND 56 RFGND 57 l RFOUTO 50 Q impedance 58 RFGND 59 RFGND Note PG4 TOSC1 and PG3 TOSC2 are internally connected to a 32 768 kHz crystal If one of both RFOUT pads of the radio module deRFmega128 22M12 is unused it must be terminated with 50 ohms to ground This action ensures the proper function of the internal power amplifier and will reduce the power consumption www dresden elektronik de Page 26 of 47 User Manual Version 1 0 2012 10 15 7 3 1 Internal front end control OEM radio modules deRFmega The front end of deRFmega128 22M12 has an internal PA for transmit and a LNA for receive mode An additionally antenna diversity feature is usable to select the antenna with the best link budget The front end control includes three MCU port pins Figure 19 They are used to choose the TX RX antenna de activate transmit and receive mode and de activate the sleep mode Table 13 and Table 14 show the logic values A logic 0 is specified with a voltage l
14. Features Form Factor Flash Memory Frequency Range Product Chipset Table 17 Product name code Product name code Information Code Explanation Comments Product Chipset mega128 ATmega128RFA1 radio module Frequency Range 2 2 4 GHz Flash memory 2 128 kByte Size M Mini module solderable Features 00 chip antenna onboard 10 RFOUT pad 12 Internal front end Antenna diversity 2x RFOUT pads Table 18 Ordering information Ordering information Part number Product name Comments BN 034491 deRFmega128 22M00 NO FW _ solderable radio module with onboard chip antenna no pre flashed firmware BN 034492 deRFmega128 22M10 NO FW solderable radio module with RFOUT pad no pre flashed firmware BN 034368 deRFmega128 22M12 NO FW solderable radio module with onboard front end antenna diversity RFOUT pads no pre flashed firmware www dresden elektronik de Page 44 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 16 Packaging dimension The radio modules will be delivered in Tape amp Reel packing Further information will be described in this section soon 17 Revision notes Actually no design issues of the radio modules are known All errata of the AVR MCU ATmega128RFA1 are described in the datasheet 1 www dresden elektronik de Page 45 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmeg
15. GCPW The dimension of the trace is depending on the used PCB material the height of the material to the next ground plane a PCB with or without a ground plane the trace width and for GCPW the gap to the top ground plane The calculation is not trivial therefore specific literature and web content is available see 2 The reference plane to the GCPW should always be a ground area that means the bottom layer for a 2 layer design and mid layer 1 for a 4 layer design see Figure 26 Furthermore it is important to use a PCB material with a known layer stack and relative permittivity Small differences in the material thickness have a great influence on the trace impedance especially on 4 layer designs g g g g gt y e 2 Layer 4 Layer gt y e gt Top Mid 1 gt Mid 2 Bottom Figure 26 GCPW trace design www dresden elektronik de Page 35 of 47 2012 10 15 User Manual Keier OEM radio modules deRFmega 8 6 Placement on the PCB The PCB design of the radio module base board and placement affects the radio characteristic The radio module with chip antenna should be placed at the edge or side of a base board The chip antenna should be directed to PCB side wo CE ot FCCHD WEE EEN deRFmega128 SEG JP Figure 27 Placing at the edge Figure 28 Placing at the center edge FCD we deRFmegal28 200 Do not place the chip antenna radio module within the base board This
16. TAG and the driver installation on different operating systems 12 Pre flashed firmware Actually the radio modules will be delivered without pre flashed firmware 13 Adapter boards dresden elektronik offers these radio modules soldered on suitable adapter boards deRFholder These boards can be plugged into dresden elektronik s development hardware platforms deRFbreakout Board deRFnode or deRFgateway For detailed information please refer to the deRFholder datasheets 4 and 5 Figure 39 deRFmega128 22T13 with radio module deRFmega128 22M12 www dresden elektronik de Page 42 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 14 Radio certification 14 1 United States FCC The deRFmega128 22M00 deRFmega128 22M10 and deRFmega128 22M12 complies with the requirements of FCC part 15 The certification process is pending 14 2 European Union ETSI The deRFmega128 22M00 deRFmega128 22M10 and deRFmega128 22M12 are conform for use in European Union countries If the deRFmega128 22M00 deRFmega128 22M10 and deRFmega128 22M12 modules are incorporated into a product the manufacturer must ensure compliance of the final product to the European harmonized EMC and low voltage safety standards A Declaration of Conformity must be issued for each of these standards and kept on file as described in Annex II of the R amp TTE Directive The manufacturer must maintain a copy of the deRFmega128 22M00 deRFmega12
17. a 18 References 1 ATmega128RFA1 8 bit AVR Microcontroller with Low Power 2 4 GHz Transceiver for ZigBee and IEEE802 15 4 Datasheet URL http www atmel com 2 AppCAD Version 3 0 2 RF amp Microwave design software Agilent Technologies URL http www hp woodshot com 3 User Manual deRFusb Firmware Update URL http www dresden elektronik de funktechnik uploads media deRFusb Firmware Update BHB en pdf 4 Datasheet deRFholder 22T00 22702 URL http www dresden elektronik de funktechnik uploads media deRFholder 22T00 22T02 DBT en pdf 5 Datasheet deRFholder 22T13 URL http www dresden elektronik de funktechnik uploads media deRFholder 22T 13 DBT en pdf 6 Directive 1999 5 EC European Parliament and the Council 9 March 1999 section 12 www dresden elektronik de Page 46 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega dresden elektronik ingenieurtechnik gmbh Enno Heidebroek Strafse 12 01237 Dresden GERMANY Phone 49 351 31850 0 Fax 49 351 31850 10 Email wireless dresden elektronik de Trademarks and acknowledgements e IEEE 802 15 4 is a trademark of the Institute of Electrical and Electronics Engineers IEEE e ZigBee is a registered trademark of the ZigBee Alliance All trademarks are registered by their respective owners in certain countries only Other brands and their products are trademarks or registered trademarks of their respective holders and should be note
18. acturer s datasheet for a proper design The control could be done by DIG4 signal Refer to Section 7 2 1 for more information RF switch for antenna diversity The switch must have 50 Q inputs and outputs for the RF signal It is possible to use a separate switch with 2 inputs and 2 outputs or use another third switch following the switch required for the PA LNA Antenna diversity switching could be controlled via DIG1 Refer to Section 7 2 1 for more information Certification The customer has to ensure that custom front end and antenna diversity designs based on the radio module deRFmega128 22M10 will meet all national regulatory requirements of the assignment location and to have all necessary certifications device registration or identification numbers For long range applications we recommend the use of the deRF mega128 22M12 radio module which already includes PA LNA BPF RF switches and antenna diversity This module will be provided by dresden elektronik with certified reference designs for EU and US applications that meet all regulatory requirements and reduce custom design costs www dresden elektronik de Page 41 of 47 2012 10 15 User Manual Keier OEM radio modules deRFmega 11 Programming The programming procedures are described in the user manual 3 which is online available on dresden elektronik webpage It describes the update process of the radio module the required software and hardware for programming via J
19. and bottom layers are hidden The rectangular signal pad copper area red not visible and the paste dimension grey have the same size of 0 6 x 0 6 mm The solder stop clearance purple has a value of 0 1 mm The RF ground pads are connected to each other and to the board ground to ensure a proper ground area For the most applications it is not necessary to separate the RF ground from system ground The RF ground area in Figure 23 has a vertical dimension of 3 8 mm The ground vias are not plugged In this area are no other radio module signals An unintentional short circuit is therefore accepted Do not place copper on any other area among the entire module Solder stop could be used everywhere The RF trace design depends on the used base board and is described detailed in Section 8 5 Was W BR L o tata Figure 23 Exemplary base board footprint for 22M10 top view www dresden elektronik de Page 32 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 8 2 3 Footprint of deRFmega128 22M12 Figure 24 shows an exemplary base board footprint for deRFmega128 22M12 Only the top layer red is visible The mid and bottom layers are hidden The pad copper area red not visible and the paste dimension grey have the same size of 0 6 x 0 6 mm The solder stop clearance purple has a value of 0 1 mm The RF ground pads are connected to each other and to the board ground to ensure a
20. d as such Disclaimer This note is provided as is and is subject to change without notice Except to the extent prohibited by law dresden elektronik ingenieurtechnik gmbh makes no express or implied warranty of any kind with regard to this guide and specifically disclaims the implied warranties and conditions of merchantability and fitness for a particular purpose dresden elektronik ingenieurtechnik gmbh shall not be liable for any errors or incidental or consequential damage in connection with the furnishing performance or use of this guide No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or any means electronic or mechanical including photocopying and recording for any purpose other than the purchasers personal use without the written permission of dresden elektronik ingenieurtechnik gmbh Copyright 2012 dresden elektronik ingenieurtechnik gmbh All rights reserved www dresden elektronik de Page 47 of 47
21. d properties in comparison 2 Layer board 4 Layer board only 2 layers available for routing the traces 4 layers available for routing the traces and design a proper ground area and design a proper ground area only 1 layer available for routing the traces 3 layers available for routing the traces under the module under the module no separate VCC plane usable separate VCC plane usable cheaper than 4 layers more expensive than 2 layers Traces under 2 Layer 4 Layer Traces under module Module module Not allowed Top Not allowed Mid 1 allowed Mid 2 allowed allowed Bottom allowed Figure 25 Layer design of 2 and 4 layer boards www dresden elektronik de Page 34 of 47 2012 10 15 User Manual Keier OEM radio modules deRFmega 8 5 Traces Common signal traces should be designed with these guidelines e Traces on top layer are not allowed under the module see Figure 25 Traces on mid layers and bottom layers are allowed see Figure 25 Route traces straight away from module see Figure 22 Do not use heat traps of components directly on the RF trace Do not use 90 degree corners Better is 45 degree or rounded corners The trace design for RF signals has a lot of more important points to regard It defines the trace impedance and therefore the signal reflection and transmission The most commonly used RF trace designs are Microstrip and Grounded Coplanar Wave Guide
22. dresden elektronik e User Manual Radio Modules deRFmega128 22M00 deRFmega128 22M10 deRFmega128 22M12 Document Version V1 0 2012 10 15 User Manual Version 1 0 j le OEM radio modules deRFmega e Table of contents 10 11 12 13 EEN Oo PP o e 6 ADPICAMON o A 6 FAUST 7 SER PE 22100 sitial ideado 7 3 2 ETT Bl edo PS er ee 8 3 3 Eu EAR KE 9 as A eege eege egeeegeg 10 Mechanical PAP Ea A naaa a i aada aiana daia karadi aieia 13 e NEE EEN ennn 13 52 deRFmega128 22M1 0 acc iescatecmbntcabinreianticbeniteieacadneasteni eege eher pes 14 ropes Mame E A 15 Soldering apo e o EEE 16 Ee lu EE 17 7 1 Signals of deRFmega128 22M00 oocooooccccccccccoccconononononcnonnncnonnnnnnnoncnnnnnnnnnnnnnnnnnnos 17 7 2 Signals of deRFmega128 22M10 rrnnnrrrrrnnnnnnnnrnnnnvrrrnnnnnnnnrrrnnnnrrrrnnnennnnrnnnnnrrnnnnne 20 7 2 1 External front end and antenna diversity control ooooooonnncccccccnonicinanacannnos 23 7 3 Signals Of E E RE KEE 24 7 3 1 Internal front end Control 27 7 4 Signal A o enn 28 PCB design EE 30 A A 30 8 2 Base board footprint AAA 30 8 2 1 Footprint of deRFmega128 22M00 rrrnnnnnnnrrrrnnnnnnnnnnnnnvrrrnnnnnnnnrrrnnnrrrnnnne 31 8 2 2 Footprint of deRFmega128 22M10 rrannnnnnnrrrrnnnnnnnvnnnnnvrrrnnnnnnnnrrnnnnrrrnnnn 32 8 2 3 Footprint of deRFmega128 22M12 ni 33 8 3 UA Ke EEN 33 EE P 34 gt RENEE AET TEATE TT E 35 8 6 Placement on the EE 36 Clock EE a a
23. e different module types are available providing different features for the custom application The deRFmega22M00 has an onboard chip antenna to establish a ready to use device No additional and expensive RF designs are necessary This module is full compliant to all EU and US regulatory requirements The deRFmega128 22M10 has the smallest form factor of all module types The customer is free to design his own antenna coaxial output or front end but it is also possible to use one of the dresden elektronik s certified and documented RF designs The deRFmega128 22M12 has an onboard front end feature including LNA and PA with 20 dB gain Furthermore it supports antenna diversity by a direct connection of two antennas or coaxial connectors All necessary RF parts and switches are integrated This module type combined with the small form factor is the optimal solution between range extension and space for mounting on PCB 2 Applications The main applications for the radio modules are e 2 4 GHz IEEE 802 15 4 e ZigBee PRO e ZigBee RF4CE e ZigBee IP e 6LOWPAN e ISASP100 e Wireless Sensor Networks e Industrial and home controlling monitoring e Smart Metering www dresden elektronik de Page 6 of 47 2012 10 15 User Manual Keier OEM radio modules deRFmega 3 Features 3 1 deRFmega128 22M00 The radio module deRFmega128 22M00 offers the following features Tiny size 23 6 x 13 2 x 3 0 mm 51 LGA pads 0 6 x 0 6 mm Supply
24. eRFmega 3 3 deRFmega128 22M12 The radio module deRFmega128 22M12 offers the following features Tiny size 21 5 x 13 2 x 3 0 mm 59 LGA pads 0 6 x 0 6 mm Supply voltage 2 0 V to 3 6 V Antenna diversity support RF shielding Onboard 32 768 kHz crystal Deep Sleep clock and e 16MHz crystal Transceiver clock with 10 ppm frequency deviation e Application interfaces 1x UART 1x TWI GPIO interface e Debug Programming interfaces 1x SPI 1x JTAG 1x ISP e 2 4 GHz front end module with internal 20 dB PA and LNA e Solderable 2 4 GHz RF output pad 2x RFOUT 6x RFGND e Certification CE FCC pending Figure 3 shows the block diagram of the radio module deRFmega128 22M12 vcc 2 0V to 3 6V een RF gg pp RFout 1 RFout 2 Control El Figure 3 Block diagram deRFmega128 22M12 www dresden elektronik de Page 9 of 47 User Manual Version 1 0 2012 10 15 4 Technical data Table 1 Mechanical data OEM radio modules deRFmega Mechanical Radio modules Size L x W x H 23 6 x 13 2 x 3 0 mm for 22M00 19 0 x 13 2 x 3 0 mm for 22M10 21 5 x 13 2 x 3 0 mm for 22M12 Pads Type LGA Pitch 1 60 mm Pad size 0 6 x 0 6 mm Table 2 Temperature range Temperature range Parameter Min Typ Max Unit Operating Twork 40 85 C temperature range Humidity 25 80 r
25. erter Analog Channel 0 to 7 AREF Analog Reference Analog AVDD Regulated Analog Supply Voltage Analog Analog Comparator AINO Analog Comparator Positive Input Analog AIN1 Analog Comparator Negative Input Analog Radio Transceiver DIG1 DIG2 Antenna Diversity Control Output Output Set to output by DIG3 DIG4 External Front End control Output EENEG External 4k7 pull up resistors necessary for proper Two Wire Interface functionality www dresden elektronik de Page 29 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 8 PCB design The PCB design of a radio module base board is important for a proper performance of peripherals and the radio The next subsections give design hints to create a custom base board 8 1 Technology The described design has the main goal to use standard PCB technology to reduce the costs and cover a wider application range Design parameters 150 um manufacturing process 4 layer PCB with FR4 Prepreg No via plugging Via hole size 0 2 mm Via diameter 0 6 mm 8 2 Base board footprint The footprint for a custom base board depends on the radio module used The mechanical dimensions are shown in Section 5 The following part describes an example to design a base board Properties of stencil and solder paste e Stencil 130 um thickness e Lead free solder paste particle size from 20 to 38 um Properties of signal pads e Signal pad dimension 0 6 x 0 6 mm recta
26. evel of 0 V to 0 3 V A logic 1 is specified with a value of VCC 0 3 V to 3 6 V The control signals DIG1 DIG3 and PD6 are available on the LGA pins Table 13 Front end control of TX RX and sleep mode Mode description PG1 DIG1 PD6 T1 PG0 DIG3 PA ANT SEL PA CSD PA CTX All off sleep mode X 0 0 RX LNA mode A 1 0 TX mode A 1 1 Table 14 Front end control of TX RX antenna Mode description PG1 DIG1 PD6 T1 PGO DIG3 PA ANT SEL PA CSD PA CTX RFOUT1 port enabled 0 X X RFOUT2 port enabled 1 X X VCC 2 0V to 3 6V JTAG UART SPI TWI ADC GPIO a gt Figure 19 Block diagram of front end functionality and control Note Do not leave any RFOUT pad unterminated www dresden elektronik de RFout 1 RFout 2 Page 27 of 47 User Manual Version 1 0 2012 10 15 7 4 OEM radio modules deRFmega Signal description The available signals are described in Table 15 Please refer to ATmega128RFA1 datasheet 1 for more information of all dedicated signals Table 15 Signal description list Signal name Function Type Active Comments Level Power VCC Voltage Regulator Power Supply Power Input GND Ground Clocks and Oscillators CLKI External Clock Input Input CLKO Divided System Clock Output Output JTAG TCK Test Clock Input No pull up resistor on module T
27. he TX and RX path RF switches to PA LNA and antenna The switch must have 50 Q inputs and outputs for the RF signal The switch control could be realized with the DIG3 and DIG4 signal of the radio module Refer to Section 7 2 1 for detailed information PA The PA has to be placed on the TX path after the RF switch It is important to regard the DAS manufacturer datasheet and application notes especially for designing the power supply and ground areas A poor design could cause a very poor RF performance For energy efficiency it is useful to activate the PA only during TX signal transmission In this case the DIG3 signal can be used as switch for de activating the PA Some PAs have the possibility to set them into sleep state This application can be realized via dedicated GPIO pin Refer to Section 7 2 1 for more information BPF The use of a band pass filter is optional It depends on the PA properties Some PAs have an internal BPF and other have none The BPF is necessary to suppress spurious emissions of the harmonics and to be compliant with national EMI limits It is possible to use an integrated BPF part or discrete parts The advantage of the first variant is that the BPF characteristic is known and published in the manufacturer s datasheet www dresden elektronik de Page 40 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega LNA The LNA could be used to amplify the received signal Please regard the manuf
28. n will configure the pins DIG1 and DIG2 as outputs Both pins are used to feed the RF switch signal and its inverse to the differential inputs of the RF switch Please refer to ATmega128RFA1 datasheet 1 to get information to all register settings Table 10 Antenna diversity control Mode description PG1 DIG1 PF2 DIG2 TRX off Disable register bit ANT_EXT_SW_EN and set port Sleep mode pins DIG1 and DIG2 to output low via I O port control registers This action could reduce the power consumption of external RF switch ANTO 1 0 ANT1 0 1 Front End The control of front end components can be realized with the signals DIG3 and DIG4 The function will be enabled with bit PA_EXT_EN of register TRX_CTRL_1 which configure both pins as outputs While transmission is turned off DIG3 is set to 0 and DIG4 is set to 1 When the transceiver starts transmission the polarity will be changed Both pins can be used to control PA LNA and RF switches Please refer to ATmega128RFA1 datasheet 1 to get information to all register settings Table 11 Front end control PG0 DIG3 PF3 DIG4 TRX off Disable register bit PA_EXT_EN and set port pins Sleep mode DIG3 and DIG4 to output low via I O port control registers This action reduces the power consumption of external front end devices TRX off 0 1 TRX on 1 0 Sleep mode To optimize the power consumption of external front end component
29. ngular red e Signal pad cut out on stencil 0 6 x 0 6 mm rectangular grey e Clearance to solder stop 0 1 mm purple Ei M Figure 20 Signal pad footprint design Properties of RF pads RF ground pad dimension 1 6 x 0 5 mm round red RF ground pad cut out on stencil 1 3 x 0 2 mm round grey RF signal out pad dimension 0 6 x 0 6 mm round red RF signal out pad cut out on stencil 0 6 x 0 6 mm round grey Clearance to solder stop 0 1 mm purple www dresden elektronik de Page 30 of 47 2012 10 15 User Manual Keier OEM radio modules deRFmega C RH C Figure 21 RF pad footprint design top view 8 2 1 Footprint of deRFmega128 22M00 Figure 22 shows an exemplary base board footprint for deRFmega128 22M00 Only the top layer red is visible The mid and bottom layers are hidden The rectangular signal pad copper area red not visible and the paste dimension grey have the same size of 0 6 x 0 6 mm The solder stop clearance purple has a value of 0 1 mm Do not place copper on any other area among the entire module Solder stop could be used everywhere Figure 22 Exemplary base board footprint for 22M00 top view www dresden elektronik de Page 31 of 47 2012 10 15 User Manual Keier OEM radio modules deRFmega 8 2 2 Footprint of deRFmega128 22M10 The exemplary base board footprint for deRFmega128 22M10 is shown in Figure 23 The top layer red is visible the mid
30. oO om mo OO oO o oO WW Oe JD DOG aaa oa Or XA CO OO OD DO OO OO DD OD aa Figure 15 Pad numbering and signal names of deRFmega128 22M10 top view www dresden elektronik de Page 20 of 47 User Manual Version 1 0 2012 10 15 OEM radio modules deRFmega e Table 9 I O port pin to LGA pad mapping for deRFmega128 22M10 UO port pin mapping LGA MCU Primary Alternate functions Comments Pad Pin function 1 GND 2 VCC 1 8 V to 3 6 V 3 11 TST Must be connected to GND 4 12 RSTN Reset 5 13 RSTON Reset output 6 14 PGO DIG3 External Front End control 7 15 PG1 DIG1 External diversity control 8 16 PG2 AMR 9 19 PG5 OCOB 10 153 PE7 ICP3 INT7 CLKO 11 52 PE6 T3 INT6 Timer3 12 28 PD3 TXD1 INT3 UART1 13 127 PD2 RXD1 INT2 UART1 14 33 CLKI External clock input 15 132 PD7 TO 16 25 PDO SCL INTO TWI 17 126 PD1 SDA INT1 TWI 18 130 PD5 XCK1 19 131 PD6 T1 Timer1 20 36 PBO SS PCINTO SPI 21 38 PB2 MOSI PDI PCINT2 SPI ISP 22 37 PB1 SCK PCINT1 SPI 23 39 PB3 MISO PDO PCINT3 SPI ISP 24 140 PB4 OC2A PCINT4 25 41 PB5 OC1A PCINT5 26 42 PB6 OC1B PCINT6 27 143 PB7 OCOA OC1C PCINT7 28 46 PEO RXDO PCINT8 UARTO 29 47 PE1 TXDO UARTO 30 148 PE2 XCKO AINO UARTO 31 GND www dresden elektronik de Page 21 of 47 User Manual Version 1 0 2012 10 15 OEM radio modules deRFmega
31. p view 3 38 gt 3 70 gt 4 30 RFGND pad dimension 0 5 x 1 6 mm round RFOUT pad diameter 0 6 mm Figure 6 RF pad geometry deRFmega128 22M10 top view www dresden elektronik de Page 14 of 47 User Manual Version 1 0 OEM radio modules deRFmega 2012 10 15 5 3 deRFmega128 22M12 The module has a size of 21 5 x 13 2 mm and a height of 3 0 mm The LGA pads are designed in a zigzag structure The RF pads consist of six ground pads and two signal pads Figure 7 and Figure 8 show the details from top view 19 70 gt 21 00 21 50 gt Signal pad dimensions 0 6 x 0 6 mm square gt Figure 7 Module dimension and signal pad geometry deRFmega128 22M12 top view
32. proper ground area For the most applications it is not necessary to separate the RF ground from system ground The RF ground area in Figure 24 has a vertical dimension of 9 4 mm The ground vias are not plugged In this area are no other radio module signals An unintentional short circuit is therefore accepted Do not place copper on any other area among the entire module Solder stop could be used everywhere The RF trace design depends on the used base board and is described detailed Section 8 5 ee dl a Figure 24 Exemplary base board footprint for 22M12 top view 8 3 Ground plane The performance of RF applications mainly depends on the ground plane design The often used chip ceramic antennas are very tiny but they need a proper ground plane to establish a good radiation pattern Every board design is different and cannot easily be compared to each other Some practical notes for the ground plane design are described below e Regard to the design guideline of the antenna manufacturer e Use closed ground planes on the PCB edges on top and bottom layer e Connect the ground planes with lots of vias Place it inside the PCB like a chessboard and on the edges very closely www dresden elektronik de Page 33 of 47 User Manual Version 1 0 i Eeer OEM radio modules deRFmega 8 4 Layers The use of 2 or 4 layer boards have advantages and disadvantages for the design of a custom base board Table 16 2 and 4 layer boar
33. resden elektronik The level shifter can be connected to the custom base board via 100 mil 2 x 3 pin header The pin assignment should be designed as below in Figure 32 For an UART connection it is sufficient to use only TXD RXD and GROUND signals 1 PE1 TXDO X1 VCC 2 VCC PENDS o 1 2 3 Not connected AED 3 4 PEO RXDO O 5 6 en 5 Not connected GND 6 GND Figure 32 100 mil 2 x 3 pin header for UARTO 10 2 ISP The AVR based radio modules can be programmed via JTAG and ISP interface For ISP connections a 100 mil 2 x 3 pin header should be used The pin assignment is given in Figure 33 The MCU ATmega128RFA1 use the ISP signals PDO and PDI on the same pins like the SPI with MISO and MOSI We recommend the use of an AVR ISP programmer 1 PB3 MISO PDO X3 VCC 2 VCC PB3 MISO PDO 5 A PB1 SCK S S S PB2 MOSI PDI 3 PB1 SCK RSTN 4 PB2 MOSI PDI 1 5 RSTN GND 6 GND Figure 33 100 mil 2x3 pin header for ISP 10 3 JTAG The AVR based radio modules can be programmed via JTAG and ISP interface For JTAG connections a 100 mil 2x5 pin header should be used The pin assignment is given in Figure 34 We recommend the use of Atmel AVR Dragon or Atmel JTAG ICE mkl programmer 1 PF4 TCK 2 GND se 3 PF6 TDO 1 2 GND 4 VCC SE 1 5 PFSTMS vec SS 7 8 oO 9 o O cnd 7 VCC 8 Not connected 9 PF7 TDI 10 GND Figure 34 100 mil 2x5 pin header for JTAG ww
34. s it is possible to use a dedicated GPIO to set the PA into sleep mode if applicable or to switch an additionally MOSFET which supplies the PA www dresden elektronik de Page 23 of 47 User Manual Version 1 0 i le OEM radio modules deRFmega 7 3 Signals of deRFmega128 22M12 The radio module deRFmega128 22M10 has 59 LGA pads The 1 marking is shown in Figure 17 Consider that the pin numbering in Figure 18 is shown from top view All LGA pads are listed in Table 12 RFOUT1 RFOUTO MAC 00 21 2E FF FF 00 1C 55 Figure 16 deRFmega128 22M12 top view Figure 17 deRFmega128 22M12 bottom view PF3 ADC3 D1G4 PF2 ADC2 DIG2 DND UCC DGND PF4 TCK PF5 TMS PF6 TDO PF7 TDI DGND PF1 ADC1 PFO ADCO AREF AVDD PD4 PES PE4 PE3 DND NC NC Bi fs fz el ai Wl Bs Bz Bs Bal Bl Bo fe he ha hal ho Bel Bel ba ba DGND QUID RFOUTL 53 O PEZ XCKD DGND em A pe 7x00 PEO RXDD N pee PBS S pes DGND ES pas RFOUTO 57 O 59 Al pes mso DEND OD 58 Bl El El Bl bol 12 hal Wel ls Hl 6 2 8 dl la e gt gt a i wu to o a oo Z MX lu ow ow z x e o D Lu o ZOO ra KA gt X akt k a S OE IN N Nw NNN NN ZOFE FE R IE PDF 0 D D SS P D SD ION OO CO om OD WOU SZ OD OO DH WMD DJ D OD WD oa D 3 F GG Co Do pp D Oopo DO D Lk DO 0 Figure 18 Pad numbering and signal names of deRFmega128 22M12 top view www dresden elektronik de Page 24 of 47 2012 10
35. t supply of nitrogen causes a discoloration of the metal RF shielding www dresden elektronik de Page 16 of 47 2012 10 15 User Manual yersion 10 OEM radio modules deRFmega 7 Pin assignment The LGA pads provide all signals to the customer power supply peripheral programming debugging tracing analog measurement external front end control antenna diversity control and free programmable ports All provided signals except VCC DGND RSTN RSTON AREF AVDD and CLKI are free programmable port pins GPIO 7 1 Signals of deRFmega128 22M00 The radio module deRFmega128 22M00 has 51 LGA pads The 1 marking is shown in Figure 11 Consider that the pin numbering in Figure 12 is shown from top view All available LGA pads are listed in Table 8 Antenna O Q FCC ID we deRFmega128 22M00 34450 0080 2221 MAC 00 21 2E FF FF 00 24 90 pad 1 Figure 10 deRFmega128 22M00 top view Figure 11 deRFmega128 22M00 bottom view T N ao D ka ka aa A AS M N w O x DN Oe yo VU Q CO ZC ad e e MN e KEE KE TITT o ON NN DS xXx NUUG O Qa Z OZ TO On 2H D sa OW OTF DO mz 000 bb bk OL CL LO gt 0 OO DM WH WHO D OD OO OO OD OO ZC CO SZ SZ OO DO hz bel kal 60 he be ba 42 bg Ba Be 684 62 8 PE2 XCKO GEI TXDO 2 PEO RXDO PB7 E PB6 PB5 E PB4 PB3 MISO m do a N o Oo a DGND RSTN RSTON PG1 DIG1 PG2 ANR PD3 TXD1 PD2 RXD1 CLKI PD PDO SCL PD1 SD
36. titute Federal Communications Commission GPIO Generals Purpose Input Output JTAG Joint Test Action Group digital interface for debugging of embedded devices also known as IEEE 1149 1 standard interface ISA SP100 International Society of Automation the Committee establishes standards and related technical information for implementing wireless systems In System Programming Land Grid Array a type of surface mount packaging for integrated circuits Low Noise Amplifier Medium Media Access Control MCU uC Microcontroller Unit Power Amplifier Printed Circuit Board Pulse Width Modulation Pr o Radio Frequency R amp TTE Radio and Telecommunications Terminal Equipment Directive of the European Union C E F L E M P P P Serial Peripheral Interface Two Wire Serial Interface U SJART Universal Synchronous Asynchronous Receiver Transmitter C S G N R W U USB Universal Serial Bus DC E MI C P A A AC A CB WM F PI SB ZigBee Low cost low power wireless mesh network standard The ZigBee Alliance is a group of companies that maintain and publish the ZigBee standard www dresden elektronik de Page 5 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 1 Overview The tiny radio module series by dresden elektronik combines Atmel s 8 bit AVR single chip ATmega128RFA1 with a small footprint Thre
37. voltage 1 8 V to 3 6 V RF shielding Onboard 32 768 kHz crystal Deep Sleep clock and e 16MHz crystal Transceiver clock with 10 ppm frequency deviation e Application interfaces 1x UART 1x TWI 1x ADC e GPIO interface e Debug Programming interfaces 1x SPI 1x JTAG 1x ISP e Onboard 2 4 GHz chip antenna e Certification CE FCC pending Figure 1 shows the block diagram of the radio module deRFmega128 22M00 vcc 1 8V to 3 6V JTAG UART SPI TWI ADC GPIO Figure 1 Block diagram deRFmega128 22M00 www dresden elektronik de Page 7 of 47 2012 10 15 User Manual Keier OEM radio modules deRFmega 3 2 deRFmega128 22M10 The radio module deRFmega128 22M10 offers the following features Tiny size 19 0 x 13 2 x 3 0 mm 55 LGA pads 0 6 x 0 6 mm Supply voltage 1 8 V to 3 6 V RF shielding Onboard 32 768 kHz crystal Deep Sleep clock and e 16MHz crystal Transceiver clock with 10 ppm frequency deviation e Application interfaces 1x UART 1x TWI 1x ADC e GPIO interface e Debug Programming interfaces 1x SPI 1x JTAG 1x ISP e Solderable 2 4 GHz RF output pads 1x RFOUT 3x RFGND e Certification CE FCC pending Figure 2 shows the block diagram of the radio module deRFmega128 22M10 vcc 1 8V to 3 6V ADC gt GPIO Figure 2 Block diagram deRFmega128 22M10 www dresden elektronik de Page 8 of 47 2012 10 15 User Manual Keier OEM radio modules d
38. w dresden elektronik de Page 38 of 47 User Manual Version 1 0 j eo OEM radio modules deRFmega 10 4 TWI The connection of external peripherals or sensors via Two Wire Interface is possible by using the TWI clock signal PDO SCL and TWI data signal PD1 SCA The necessary pull up resistors must be placed externally on the base board We recommend the use of 4 7 kQ resistors as shown in Figure 35 VCC VCC PDO SCL PD1 SCA Figure 35 Two Wire Interface www dresden elektronik de Page 39 of 47 2012 10 15 User Manual Version 1 0 OEM radio modules deRFmega 10 5 External front end and antenna diversity The radio module deRFmega128 22M10 can be connected with an external front end including power amplifier PA for transmission and low noise block LNA for receiving Figure 36 shows a possible design as block diagram A custom design can contain a single PA or single LNA or a complete integrated front end chip It depends mainly on the application Furthermore it is possible to include a RF switch for driving the antenna diversity feature VCC 1 8V to 3 6V DIG1 DIG3 ANTO I 4 ANT1 GPIO for PA on off RFout ou DIG4 Figure 36 block diagram for external PA LNA and antenna diversity control Unbalanced RF output The radio module 22M10 has a 50 Q unbalanced RF output For designs with external RF power amplifier a RF switch is required to separate t

User Manual Radio Modules deRFmega128

Contents

Download Pdf Manuals

Related Search

Related Contents