Freescale Freedom Development Board FRDM
Contents
1. Figure 12 FRDM CR20A schematic RevB n B 1 5 2 3 HE von RENDD IFIVDD PA von ReaD f E t 7 03d 5 8 16 HE Sue Em oe MISO MOSI POKA YOKE JE Place both i DWP PMESHIELD rte E Pl e al ole poa e ataca D 3 ER ANTA di j m ge So sees E male LA er TP Gen ERE ep a 7 8 me res GPIO3 g Tea Seo E mu Te genos 5 Puso Hi TEMOS Bi d nes EX n moe 9 co S108 8 Los Hs SPL eae e ro meo 8 FSU Hae Siss ice TP7 4 Pi eS E a T 2 oo mL T Rep zap x lt A on ar ori ax our e AOUT re 4 ZE loni Pe m2 a 417 onus mx surron LE Pese 0 a3 El ar X DTMS TX SWITCH AAA gren 3f 2400MHz S00HM yi 2 RE QuTP Ha ep PALA ZREN RE GUTR ron 10 100 ohm controlled P Area er impedance from DUT of 22 to balun 295 52 RF II UL HARMONIC TRAP Open Solder mask 50 ohm controlled ba impedence line from Moine via Balon to SMA and F Antenna voz avs pavs pap Default conting 1 2 m pavaro AST bXCVR pava BRD EXTAL 32M 1 sa na s 100k swe a XTAL SoM 1 DNP 4 Ma a VIN 10 REF VOCS VocS2. Figure 17 FRDM CR20A PCB stackup cross section four layer e Solder mask is required e Silk screen is required 5 2 Panelization The panel size can be negotiated depending on production volume 5 3 Materials The PCB composite materials must meet the following requirements Laminate the base laminate material must be FR4 If the laminate material is changed the RF electrical characteristics may change and degrade RF performance e Copper foil Top and bottom copper layers must be 1 0z copper e Plating All pad plating must be Hot Air Levelling HAL 5 4 Solder mask The solder mask must meet the following requirements e Solder mask type Liquid Film Electra EMP110 or equivalent e Solder mask thickness 10 30 um 5 5 Silk screen The silk screen must meet the following requirements e Silk screen color White Silk screen must be applied after application of solder mask if solder mask is required e The silk screen ink must not extend into any plated thru holes e The silk screen must be clipped back to the line of resistance Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 22 Freescale Semiconductor Inc Revision history 5 6 Electrical PCB testing e All PCBs must be 100 percent tested for opens and shorts Impedance measurement An impedance measurement report is not mandatory 5 7 Packaging Packaging for the PCBs must meet the following requirements e Finished
3. Ao DNPg 2 DNP 4 2 VOD_REGD CLV1A FKB CJ1M1F1BB7R4S3 wore ICAP asatonton FoP FWO x mu Place componentes RGB RED R22 0 DNP GPIOS ing The FRDM HEADERS foe ost monitoring OB GREEN AD o DNP GRS RGB LED FEATURE FRDM MCR20A rage Ta GB BWE gt Ras a DWP por T FRDM MCR20A Shield Sie Document Number ey E sc 2596 PO nas A as 4 3 FRDM CR20A development board ox 7 10 Ji GPIO 1 2e SS MMM so got 2229 ge 20 ones 33t day 28 2 2014 FREESCALE KAN oa 2 so i val jen an an HEBES HESHEHEH 5 Si R6 Bi p e meteor SWI e C17 R5 LED2 e B Aa Al 1 o5 w o N 21 8 88 o n i E A ec ml EN 3 i z LT Ci9 LEDI e e iiho 9 ee SW2 RA oo TE IE c4 e 00 I M RST ng Re eee ROTO MM Ne CE dl c20 ec sls l l is cil SW3 bon Ta e e L5 O mue se yi J6 Bins B No A A Lo_rer 0 ave se y H B Le J es TP24 uae n En NN j 5y 30 ci4010 j END TP21 c13 YUN NTP23 PowERC 9l6 ip25 ja ANALOG si gt e N90900000 8000009 Figure 13 FRDM CR20A reference board PCB component location top view Pd L 9090000000mH 00000000N N t e st 8 IL I l 192 o e NJ O2 IM I20M 22 ia aat MAT gqr SqT 4 e Y N star a 3 gt LIT asaT erat 9397 MOTO OT erar ear ane e osaT 9197 1 e 338 OI EVE BH B asar Qssa7 gr si e asaT sTO 9 isar E
4. 3 of 3 Item Qty Reference Value Description Mfg Name Mfg Part Number 35 18 TP1 TP2 T TPAD 040 TEST POINT PAD 40MIL DIA SMT NOTACOMPONENT NOTACOMPONENT P3 TP4 TP NO PART TO ORDER 5 TP6 TP7 TP8 TP9 T P10 TP11 TP12 TP13 TP15 TP1 6 TP17 TP 26 TP27 36 3 TP18 TP19 TPAD 030 TEST POINT PAD 30MIL DIA SMT NOTACOMPONENT NOTACOMPONENT TP20 NO PART TO ORDER 37 5 TP21 TP22 TEST TEST POINT WHITE 40 MIL KEYSTONE 5002 TP23 TP2 POINT DRILL 180 MIL TH 109L ELECTRONICS 4 TP25 WHITE DNP 38 1 U1 MCR20A IC XCVR 2 4GHZ 250KBPS FREESCALE MCR20AVHM O QPSK 1 8 3 6V MAPLGA41 SEMICONDUCTOR 39 1 U2 TXBO108 IC VXLTR 8BIT BIDIR 15KV ESD TEXAS TXBO108PWR 1 2 3 6V 1 65 5 5V TSSOP20 INSTRUMENTS 40 1 Y1 32MHZ XTAL 32MHZ 9PF SMT NDK EXS00A CS02368 3 2X2 5MM 41 1 Z1 2400MHz XFMR BALUN 2400 100MHZ MURATA LDB212G4005C 001 500HM SMT 5 The FRDM CR20A development platform PCBs must comply with the following FRDM CR20A includes neither J5 the SMA connector nor the NOTES external antenna e For external measurements and or external antenna usage JS should be installed and soldered in place e A50 ohm SMA jack connector is required recommended part number 142 0701 851 from Emerson Johnson e For an external antenna the screw terminal 2 4 GHz antenna part number B4844 01 from Antenova is recommended e Other external components can be found via suppliers dis
5. also available at the same web site to provide additional design guidance 5 1 Single PCB construction This section describes individual PCB construction details The FRDM CR20A PCBs are two layer multi layer designs The PCBs contain no blind buried or micro vias e PCB data FRDM CR20A size Approximately 73x 53mm 2 88 x 2 10 inches FRDM CR20A final thickness Cu Cu 1 57 mm 0 62 inches 10 excluding solder mask Table 6 defines some of the layers of the completed PCB The artwork identification refers to the name of the layer in commonly used terms Table 6 MCR20AVHM Layer by Layer Overview Layer Artwork Identification File Name 1 Silkscreen Top PSS art 2 Top Layer Metal L1_PS art 3 Bottom Layer Metal L2 SS art 4 Silkscreen Bottom SSS art Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 Freescale Semiconductor Inc 21 PCB manufacturing specifications IMPORTANT The FRDM CR20A development board contains high frequency 2 4 GHz RF circuitry As a result RF component placement line geometries and layout and spacing to the ground plane are critical parameters BOARD STACKUP GEOMETRY IS CRITICAL Dielectric and copper thicknesses and spacing must not be changed follow the stackup see Figure 17 information provided with the reference design 0 062 10 AAA LL d AYER 1 L1 PS JA TARGET 62 MILS AAA LAYER 2 Le SS
6. current measurements if desired The red LED marked as LED 1 is available as a power indicator The power VCC 3V3 P3V3 BRD TP15 P3V3 IC TP16 J6 HDR 1X2 TH DNP Figure 8 FRDM CR20A power management circuit header O ohm resistor provides the means to supply either the IC or board circuits Current measurements can be made by inserting a current meter in place of a designated jumper Connections configurations are described in Table 2 Table 2 Power distribution headers Supply Designation Header Pins Description P3V3 BRD 1 2 Supply voltage to LEDs R4 Normally jumpered Jumper used to enable LEDs SW s and Level Translator on board Leave open for lowest power Usage Measure board current P3V3 IC 1 2 Supply voltage to MCR20A J6 Normally jumpered Supplies the MCR20A tranceiver Usage Measure or supply radio current Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 Freescale Semiconductor Inc FRDM CR20A development board 4 2 4 FRDM CR20A peripheral functions The FRDM CR20A development board includes the Freescale Freedom board headers enabling interface to general purpose functions to assist with to assist with application implementations The FRDM CR20A board also has alternate port functions routed to those interface headers where off board Freescale Freedom development platform peripherals can be used if desired 4 2 4 1 RGB LED T
7. om z d Le ninsa D re E ve pe onem HOR TH 1x3 Tem T5 ma FA mz ek TER Hort Lan e trace L oun 32MHz XTAL Wr o E e INE Dele Por S EE current measurements POWER MANAGEMENT POWER ON HUE a RESET mum orcmem RU o ONP cpios m o RET Dt RETO 0 DNP GPs e m DS PWMInt P3V3 BRD P3V3 BRD ca VCC_avs 026 Dtasox pm u ti Dan 2 NOTE pienso Peas l an Piesa der da D11MOSI ea 100k swi 100K eiii F al ON FRDM xxxxk ID REP La 3 3 ot Eos L PM Dis ss pue Dam ch Dean NS T a ain Rs ES Din AN p p n0 DNO Go Lgs miss Los num g D A DNP POS 2 paket RM 0 DMP apot Dome Ris 0 DNP GPIDI Tete DNP m mer DisiAnaint 29 an E R20 o CLK OUT pum RIS GAD DNP Go pomme me AD PAP GPO i AAA kb 07 so Sm o SPSO ES a 2 a DOMOS 3i EE reves EL 777777 UNES AE B H 3 IPS DEPWI Lg T ICS SET e m 0 X SWITCH SKT X0 sit femmes SKT_1X8 mm A Drew 18 BS ADS RIS SHI a 27 7 a 0 FT YOURI host board from Arduino GPIO Signals come up unbuffered ZM e 8 R SH SANS MIE te oat board fe FE Ana mn do INTERRUPT PUSH BUTTONS CS se 2 L J j voa ET u ES ee L T 600000 vin voc 5V RIO closed to 10 to reduce Si AS Hip an 0 AGBAED TRANSLATORS the circuit trace parasit 1 As SHS o RGB GREEN LED2 m nan BLUE RGBRED gig LEDROB RED 1 FI 4 LEDROB GREEN gy mcn GREEN EA MG INNEN A Na c E EE hot B AN oue AE Uh g voo aeon EDO Pa Te O gg RGB BLUE gt CPU RSTb Ink int id Loursm a RA Tow D FRIES 2 freescale La 10nH L7 ton
8. 00 Ohm controlled i DNP DNP CAD NOTE F Antenna impedance from DUT i pa i SMA F A na to balun i ud ut HARMONIC TRAP MCR20A 50 ohm controlled impedence line from Balun to SMA and F_Antenna Figure 6 FRDM CR20A RF circuitry 4 2 2 Clocks The FRDM CR20A provides two clocks e 32 MHz Reference Oscillator Figure 7 shows the external 32 MHz external crystal Y1 This mounted crystal must meet the specifications outlined in the AN3251 application note The IEEE 802 15 4 Standard requires that the frequency be accurate to less that 40 ppm At 25 C it is desired to have the frequency accurate to 10 ppm or less to allow for temperature variation Capacitors C16 and C17 provide the bulk of the crystal load capacitance To measure the 32 MHz oscillator frequency signal CLKOUT pin 16 can optionally be configured to provide a buffered output clock signal Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 10 Freescale Semiconductor Inc 4 2 3 Power management EXTAL_32M FRDM CR20A development board Figure 7 FRDM CR20A 32 MHz reference oscillator circuit The FRDM CR20A development board must be powered through the edge connectors from the Freescale Freedom development platform board that it is plugged into The FRDM CR20A power management circuit is shown in Figure 8 The two pin header J6 provides the means to supply current to various board components and
9. 2 1 0 Header Demo Reset Button Applications Push Buttons freescale C Figure 2 FRDM CR20A callouts and I O headers 3 3 Software and driver considerations No special software required This is not a standalone board an external MCU is required for enablement 4 FRDM CR20A development board 4 1 FRDM CR20A board overview The FRDM CR20A is an evaluation board based on the Freescale MCR20A transceiver The FRDM CR20A provides a platform to evaluate the MCR20A transceiver and develop software and Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 Freescale Semiconductor Inc 5 FRDM CR20A development board applications The device is accompanied by a 32 MHz reference oscillator crystal RF circuitry including antenna and supporting circuitry The FRDM CR20A board is intended as the core PCB for MCR20A device evaluation and application development and can be used as daughter card to other development boards within the Freescale Freedom development platform as an application specific such as a shield card 4 1 1 PCB features The FRDM CR20A board provides the following features e The Freescale Freedom development platform form factor e Two layer metal 0 062 inch thick FR4 board e LGA footprint e Printed metal F Antenna and footprint to add an SMA connector 32 MHz reference oscillator crystal Standard Freescale Freedom daughter card mounting interface shield e Power level tra
10. A transceiver with tools and software that include hardware evaluation and development boards software development IDE and applications drivers custom PHY usable with the Freescale IEEE 802 15 4 compatible MAC Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 Freescale Semiconductor Inc 3 A MCR20A transceiver overview and description The FRDM CR20A development board consists of one board that contains the MCR20A device with a 32 MHz reference oscillator crystal RF circuitry including an antenna and supporting circuitry to be mounted into the popular Freescale Freedom development board form factor The board is not a standalone product it requires an external MCU to support applications development via SPI connection 3 2 Board features 3 2 1 FRDM CR20A board The FRDM CR20A development board can be plugged into the Freescale Freedom development platform as a shield It contains the MCR20AVHM device and all necessary I O connections to connect with the Freedom system Figure 1 shows the FRDM CR20A development board OA Ww t J cis E I gt b T3 C od GND 1P23 Figure 1 FRDM CR20A The FRDM CR20A development board includes the following features e The Freescale ultra low power MCR20AVHM 802 15 4 transceiver Full IEEE 802 15 4 compliant wireless node Reference design area with small footprint low cost RF node RF circuitry includes a Balun to convert the diffe
11. Development Board FRDM CR20A User s Guide Rev 0 04 2015 Freescale Semiconductor Inc 7 FRDM CR20A development board 4 1 3 Board level specifications Table 1 FRDM CR20A board specifications Parameter Min Typ Max Units Notes Conditions General Size PCB X Y 81 2 x 53 3 mm 3 20 x 2 10 inches Layer build PCB 1 57 mm Two layer 0 062 inches Dielectric material PCB FR4 Temperature Operating temperature see 40 25 70 C Operating temperature is limited to 70 C due to note switches Basic circuit is good for a maximum temperature of 85 C Storage temperature 30 25 70 C RF 802 15 4 frequency range 2405 2480 MHz _ All 16 channels in the 2450 MHz band Operation frequency 2360 2480 MHz RF Receiver Saturation maximum input 0 dBm Refer to data sheet level Sensitivity for 1 packet error 102 dBm Refer to data sheet rate PER 25 C 802 15 4 RF Transmitter RF Power Output 35 8 dBm Programmable in steps At the antenna feed with no trap 2nd harmonic lt 50 lt 40 dBm _ Refer to data sheet 3rd harmonic lt 50 lt 40 dBm _ Refer to data sheet Regulatory Approval FCC Product is approved according to the FCC part 15 standard CE ETSI Product is approved according to the EN 300 328 V1 7 1 2006 10 standard CE EMC Product is approved according to the EN 301 489 1 V1 6 1 2005 09 and
12. EN 301 489 17 V1 2 1 2002 08 standards Safety UL Product is approved according to the IEC 60950 1 and EN 60950 1 first edition standards Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 Freescale Semiconductor Inc FRDM CR20A development board Table 1 FRDM CR20A board specifications continued Parameter Min Typ Max Units Notes Conditions Environment RoHS Product complies with the EU Directive 2002 95 EC of 27 January 2003 WEEE Product complies with the EU Directive 2002 95 EC of 27 January 2003 Trap will add 1 to 2 dB of loss 4 2 Functional description The FRDM CR20A is built around the Freescale FRDM CR20A transceiver with a 32 pin LGA package This board is intended as a simple evaluation platform and as a building block for application development The two layer board provides the MCR20A transceiver with the required RF circuitry and 32 MHz reference oscillator crystal The layout for this base level functionality can be used as a reference layout for the user s target board Figure 5 shows a simple block diagram SO OO J2 A o SPI Communication 32MHz Xtal MCR20A Selector SMA 2 Push Button Switch Power Power LED Management Reset SW Button F Antenna i Transceiver J1 GPIO J3 POWER J4 ANALOG 13 ja e eecccecoco 6 6 6 6 9 1 1 Figure 5 FRDM CR20A bloc
13. Freescale Semiconductor Inc User s Guide Document Number FRDMCR20AUG Rev 0 04 2015 Freescale Freedom Development Board FRDM CR20A User s Guide 1 About this guide This User s Guide describes the Freescale FRDM CR20A development board The FRDM CR20A is a 2 4 GHz Industrial Scientific and Medical ISM intended for the IEEEG 802 15 4 Standard including Thread and IPv6 6loWPAN protocols The FRDM CR20A contains the MCR20A transceiver that is typically combined with a software stack and a Freescale Kinetis MCU to implement an IEEE 802 15 4 Standard platform solutions 1 1 This manual is intended for system designers Audience 2 Safety information 2 1 This equipment is for use by developers for evaluation purposes only and must not be incorporated into any other device or system This device may not be sold to the general public Integrators will be responsible for reevaluating the end product including the transmitter and obtaining a separate FCC authorization FCC guidelines 2015 Freescale Semiconductor Inc All rights reserved 14 2 1 2 2 2 3 2 4 3 1 3 2 3 3 4 1 4 2 4 3 2d 52 3 3 5 4 MI 5 6 RIVE 5 8 3 9 Contents About this guide 1 ANUGIGBCE dada pe t ke jan RA Ae d 1 Safety information 1 FCC guidelimes 234 eere em em ees 1 Regulatory approval for Canada IC RSS 210 2 Electrostatic
14. KEMET C0402C104K4RAC 6 0402 9 1 C9 0 47UF CAP CER 0 47UF 6 3V 10 X5R MURATA GRM155R60J474KE1 0402 9D 10 2 C10 C12 33PF CAP CER 33PF 50V 5 COG 0402 VENKEL COMPANY C0402C0G500 330JN E 11 1 C11 0 33UF CAP CER 0 33UF 6 3V 10 X5R MURATA GRM155R60J334KEO 0402 1D 12 1 C13 10uF CAP CER 10UF 10V 20 X5R TAIYO YUDEN LMK107BJ106MALTD 0603 13 1 C14 2 2UF CAP CER 2 2UF 10V 1096 X7R TAIYO YUDEN LMK107B7225KA T 0603 14 2 C16 C17 11pF CAP CER 11pF 50V 1 COG 0402 AVX 04025U110FAT2A 15 2 C18 C19 1000pF CAP CER 1000PF 50V 5 COG MURATA GRM1555C1H102JA0 DNP 0402 1D 16 3 C23 C24 C 10uF CAP CER 10UF 6 3V 20 X5R TDK C1005X5R0J106M050 25 DNP 0402 BC 17 2 1J1 J3 SKT_1X8 CON 1X8 SKT TH 100MIL SP SAMTEC SSQ 108 03 F S 340H AU 394L 18 1 J2 SKT 1X10 CON 1X10 SKT TH 100MIL SP SAMTEC SSQ 110 03 F S 340H AU 394L 19 1 J4 SKT_1X6 CON 1X6 SKT TH 100MIL SP SAMTEC SSQ 106 03 F S 340H AU 394L 20 1 J5 DNP SMA CON SMA EDGE 0 062IN 50 EMERSON 142 0701 851 OHM FEMALE 18GHZ NETWORK POWER CONNECTIVITY SOLUTIONS INC Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 Freescale Semiconductor Inc FRDM CR20A development board Table 5 Bill of materials Common parts for all frequency bands Sheet 2 of 3 Item Qty Reference Value Description Mfg Name Mfg Part Number 21 1 J6 DNP HDR 1X2 HDR 1X2 TH 100MIL SP 339H AU SA
15. MI V k o MO000000 n 00000 si Figure 14 FRDM CR20A reference board PCB test points Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 16 Freescale Semiconductor Inc FRDM CR20A development board u EN M EN Le e F e l f 2 ro a li W e A S Figure 15 FRDM CR20A reference board PCB layout top view 0000000907 09900pOU ZAN A m lt Ly n a m a Mm D o A gt OONO OO Figure 16 FRDM CR20A reference board PCB layout bottom view Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 Freescale Semiconductor Inc 17 FRDM CR20A development board 4 3 1 Bill of materials Table 5 Bill of materials Common parts for all frequency bands Sheet 1 of 3 Item Qty Reference Value Description Mfg Name Mfg Part Number 1 1 ANT1 F Antenna PCB F ANTENNA NO PART ORDER 2 1 C1 10PF CAP CER 10PF 50V 5 COG 0402 AVX 04025A100JAT2A 3 1 C2 1PF CAP CER 1PF 50V 5 COG 0402 MURATA GRM1555C1H1ROCA 01B 4 2 C3 C4 10PF CAP CER 10PF 50V 5 COG 0402 AVX 04025A100JAT2A 5 1 C5 DNP 1 2pF CAP CER 1 2PF 50V 21 COG KEMET C0402C129C5GAC 0402 6 1 C6 5pF CAP CER 5pF 50V 5 COG 0402 MURATA GJM1555C1H5ROCBO 1D 7 2 C7 C20 1000pF CAP CER 1000PF 50V 5 COG MURATA GRM1555C1H102JA0 0402 1D 8 3 C8 C21 C2 0 1UF CAP CER 0 1UF 16V 10 X7R
16. MTEC TSW 102 07 G S TH 98L 22 1 J7 HDR TH HDR 1X3 TH 100MIL SP 339H AU SAMTEC TSW 103 07 G S 1X3 100L 23 1 LED1 RED LED RED CLEAR SGL 30MA SMT LITE ON LTST C171KRKT 0805 24 1 LED2 CLV1A FKB LED RED BL GRN SGL CREE INC CLV1A FKB CJ1M1F1 CJ1M1F1B 50 25 25mA SMT BB7R4S3 B7R4S3 25 1 L1DNP 4 3nH IND 4 3NH 500MHZ 160MA MURATA LQP15MN4N3B02 2 0402 26 6 L2 L3 L4 L 10nH IND 0 010UH 100MHZ 350MA TDK MLK1005S10NJTOOO 5 L6 L7 5 0402 DNP 27 3 R1 R2 R20 0 RES MF ZERO OHM 1 16W 5 ROHM MCRO1MZPJOOO 0402 28 3 R4 R13 R1 O RES MF ZERO OHM 1 10W VISHAY CRCWO6030000ZOEA 4 0603 INTERTECHNOLOGY 29 4 R5 R10 R1 220 RES MF 220 OHM 1 10W 5 0603 KOA SPEER RK73B1JTTD221J 1 R12 30 3 R6 R7 R8 10 0K RES MF 10 0K 1 16W 1 VISHAY CRCWO40210KOFKE DNP AEC Q200 0402 INTERTECHNOLOGY D 31 9 R15 R16 R 0 RES MF ZERO OHM 1 16W 5 ROHM MCRO1MZPJOOO 17 R18 R1 0402 9 R21 R22 R23 R24 DNP 32 10 SH1 SH2 S 0 ZERO OHM CUT TRACE 0402 LAYOUT ELEMENT LAYOUT ELEMENT H3 SH4 SH PADS NO PART TO ORDER ONLY ONLY 5 SH6 SH7 SH8 SH9 SH10 33 3 SW1 SW2 TL1015AF1 SW SPST PB 50MA 12V SMT E SWITCH TL1015AF160QG SW3 60QG 34 1 S1 DNP BMI S 103 SHIELD RF 1032X1032MIL 1 LAIRD BMI S 103 PI CE TECHNOLOGIES Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 Freescale Semiconductor Inc 19 PCB manufacturing specifications Table 5 Bill of materials Common parts for all frequency bands Sheet
17. PCBs must remain in panel Finished PCBs must be packed in plastic bags that do not contain silicones or sulphur materials These materials can degrade solderability 5 8 Hole specification tool table See the ncdrill 1 4 tap file included with the Gerber files and the FAB 28535 pdf file 5 9 File description Files included with the download include Design Gerber and PDF files Gerber files are RS 274x format Not all files included with the Gerber files are for PCB manufacturing PDF files included are e FAB 28535 pdf FRDM Board fabrication drawing e GRB 28535 zip FRDM Metal layers solder mask solder paste and silk screen e SPF 28535 pdf FRDM Schematic Design files are in Allegro format with OrCAD schematic capture 6 Revision history Rev Date Substantive change s number 0 03 2015 Initial public release Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 Freescale Semiconductor Inc 23 EA AN A e POS Een Efficient Solutions by Freescale How to Reach Us Information in this document is provided solely to enable system and software Home Page implementers to use Freescale products There are no express or implied copyright freescale com licenses granted hereunder to design or fabricate any integrated circuits based on the Web Support information in this document freescale com support Freescale reserves the right to make changes wit
18. U2 is used as a level shifter is useful when use with the Arduino system It provides the voltage translation from the Arduino 5V system to the Freescale MCU plus transceiver 3 3V system The level translator is supplied by the VCC_3V3 source Figure 11 shows the translator circuit lO REF C21 VCC 3V3 C26 0 1UF NOTE On Arduino UNO IO REF is 5V 0 1UF ON FRDM xxxxx IO REF is 3 3V D15 Ana int 1 R20 0 CLK OUT D13 SCK 3 CLK Ho e 0 SPI CLK D12 MISO 4 MISO SH5 o__ SPI MISO D11 MOSI 5 MOSI SH4 0 SPI MOSI DTO SPI 6 SS SH3 Q SPI SS D6 PWM Int F HX_SW SH7 X 0 RX SWITCH D5 PWM Int 8 RTS SHI i 0 RST b XCVR D2 int 9 IRQ sa p IRQ B 10 VCC_3V3 TXB0108 CAD NOTE ai R20 closed to IC to reduce TRANSLATORS the circuit trace parasitic Figure 11 TXB0108 level translators 4 2 4 4 Interface connectors J1 J2 J3 and J4 The four connectors J1 J2 J3 and J4 are 100 mil pin headers mounted on the top component side supporting the FDRM standard connector e Voltage rails VCC 3V3 VCC 5V and V IN 5 9V are routed via header J3 To avoid damage the exact same voltage should supply peripherals on the FRDM CR20A that interface to the Freescale Freedom board supply except where the level translator U2 is used The pin definitions for the headers are shown in Table 3 and Table 4 respectively Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 Freescale Semiconductor Inc 13 FRDM CR20A develo
19. discharge considerations 3 Disposal instructions 3 MCR20A transceiver overview and description 3 Introd ctiom i e ts Mens das 3 Board features aria oe mage wr Cores aes 4 Software and driver considerations 5 FRDM CR20A development board 5 FRDM CR20A board overview 5 Functional description 9 Schematic board layout and bill of material 15 PCB manufacturing specifications 20 Single PCB construction 21 Panehzation ss assume a ea 22 Materials pe de 22 Solder mask cia ie 22 SIE SCLESO va 22 Electrical PCB testing 4 23 A a aid en on qoe unes how be hens 23 Hole specification tool table 23 File description 23 Revision history ui ii ek eR eren 23 eo Ly CA Z freescale Safety information FCC approval of this device only covers the original configuration of this device as supplied Any modifications to this product including changes shown in this manual may violate the rules of the Federal Communications Commission and Industry Canada and make operation of the product unlawful 2 1 1 Labeling FCC labels are physically located on the back of the board 2 1 2 Operating conditions This device complies with part 15 of the FCC rules Operation is subject to the following two conditions e T
20. he LED feature includes an RGB Red Green Blue LED The RGB LED is driven by the MCU on another board and not the transceiver and therefore can be used with any application Figure 9 shows the RGB circuit The RGB LED circuity offers the following features RGB power supply is P3V3_BRD e GPIO driven externally by J4 Header J4 4 Blue J4 5 Green J4 6 Red e Optionally a 0 ohm resistor can be populated R22 R24 and be driven by GPIO6 8 of the transceiver LED2 RGB RED RGB GREEN RGB BLUE CLV1A FKB CJ1M1F1BB7R4S3 RGB_RED R22 0 DNP GPIO6 0 RGB GREEN R23 0 DNP GPIOB RGB LED FEATURE L RGB BLUE R24 0 DNP GPIO7 M Figure 9 RGB LED feature 4 2 4 2 Push buttons Push buttons can be used by the application to trigger events and are normally driven by an external MCU or transceiver IC Figure 10 shows the push buttons circuit implementation e No power supply is required however a pull up circuit is feasible Connected to the D4 and D3 signals of connector J1 for interface to off board circuitry Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 12 Freescale Semiconductor Inc FRDM CR20A development board P3V3_BRD P3V3 BRD R6 R7 10 0K SW1 10 0K SW2 DNP DNP D4 Int eS gt D3 PWM Int 1 2 E C18 TL1015AF160QG C19 TL1015AF1600G 1000pF 1000pF TP18 DNP TP19 DNP Figure 10 Push buttons 4 2 4 3 Level translator The on board level translator
21. his device may not cause harmful interference e This device must accept any interference received including interference that may cause undesired operation 2 1 3 Exposure limits This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment The antenna s used for this equipment must be installed to provide a separation distance of at least 8 inches 20cm from all persons 2 1 4 Antenna restrictions An intentional radiator is designed to ensure that no antenna other than that furnished by the responsible party is used with the device The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator is considered sufficient to comply with the provisions of this Section The manufacturer may design the unit so that a broken antenna can be replaced by the user but the use of a standard antenna jack or electrical connector is prohibited This requirement does not apply to carrier current devices or to devices operated under the provisions of Sections 15 211 15 213 15 217 15 219 or 15 221 of the IEEE 802 15 4 standard Further this requirement does not apply to intentional radiators that must be professionally installed such as perimeter protection systems and some field disturbance sensors or to other intentional radiators which in accordance with Section 15 31 d must be measured at the installation site However the installer is responsible for ensu
22. hout further notice to any products herein Freescale makes no warranty representation or guarantee regarding the suitability of its products for any particular purpose nor does Freescale assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability including without limitation consequential or incidental damages Typical parameters that may be provided in Freescale data sheets and or specifications can and do vary in different applications and actual performance may vary over time All operating parameters including typicals must be validated for each customer application by customer s technical experts Freescale does not convey any license under its patent rights nor the rights of others Freescale sells products pursuant to standard terms and conditions of sale which can be found at the following address freescale com SalesTermsandConditions Freescale the Freescale logo and Kinetis are trademarks of Freescale Semiconductor Inc Reg U S Pat amp Tm Off All other product or service names are the property of their respective owners 2015 Freescale Semiconductor Inc Document Number FRDMCR20AUG Rev 0 04 2015 y w freescale
23. k diagram 4 2 1 RF performance and considerations The FRDM CR20A development board includes the Freescale MCR20 2 4 GHz transceiver Key specifications for the FRDM CR20A development board are e Programmable output power from 35 dBm to 8 dBm at the SMA no trap e Typical sensitivity is 102 dBm 01 PER for 20 byte payload packet Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 Freescale Semiconductor Inc 9 FRDM CR20A development board Frequency range is 2360 to 2480 MHz The MCR20 transceiver features an integrated transmit receive switch to its differential bidirectional RF input output pin Board features a low component count RF matching network with off chip 1 1 Balun e F printed metal antenna for a small footprint low cost design The layout has provision for out of band signal suppression components L1 and C5 if required Figure 6 shows the typical topology for the RF circuitry A footprint is available to install RF connector J5 for measurement purposes When using J5 C1 should be installed and C4 removed J5 DNP SMA RF_SMA into z e Ri 0 zem D 1 RFP RF P 5 AA ZE Zi MEE 16 4 6 DNP C2 Z CAP a IP 25 1PF al C3 5 a 26 10PF 3 1 RE 50 4 Li REANT Al 28 E 2400MHz 500HM s i one R2 0 z i Li i RF OUTP RFN ZRFN i al i RF OUTN 2 AN EM d dd ANTI 1
24. nslators to support multiple voltages inputs 4 1 2 Form factor Figure 3 shows the FRDM CR20A connector and header locations GPIO 4 Y JEN HERE AY E 2014 FREESCALE an imi 0 R5 0 0 LED2 V HN VOcCHO INQHA N c14 ee 9 8 O Sne T23 POWER ele TP25 ANALOG Figure 3 FRDM CR20A Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 6 Freescale Semiconductor Inc FRDM CR20A development board Figure 3 also shows a footprint of the FRDM CR20A with the location of the IO headers The following list gives these details e Jl J2 J3 and J4 Headers have standard 0 1 in 2 54 mm pin spacing J2 is 10 pin Jl and J3 are 8 pin JA is 6 pin Pin headers mounted on the top side of the FRDM CR20A board and are intended to plug into matching receptacles on the Freescale Freedom platform board Header has standard 0 1 in 2 54 mm pin spacing J6 is a 1x2 pin with a cut trace on bottom side Pin headers mounted on the top side of the FRDM CR20A and is intended to isolate for a IC current measurements Header has standard 0 1 in 2 54 mm pin spacing J7is 1x3 pin Pin headers mounted on the top side of the FRDM CR20A board and intended to select the Reset target main MCU or transceiver R 50 x4 Figure 4 FRDM CR20A top side component side footprint Freescale Freedom
25. pment board Table 3 J1 amp J2 connector J1 J2 meager Board Pin Name e reader A i Pin Description Pin Board Pin Name Description Number Number 1 GPIO1 DO Rx int 1 GPIO4 D8 Int 2 GPIO2 D1 Tx int 2 GPIO5 D9 Int 3 IRQ B D2 int 3 SPI SS D10 SPI SS 4 SW2 D3 PWM int 4 SPI_MOSI D11 MOSI 5 SW1 D4 int 5 SPI MISO D12 MISO 6 RST D5 PWM int 6 SPI CLK D13 SCK 7 RX Switch D6 PWM Int 7 GND VSS GND board ground 8 GPIO3 D7 CMP int 8 NC VREF NC 9 GPIO6 D14 Ana Int 10 CLK_OUT D15 Ana Int Table 4 J3 amp J4 connector J3 J4 Header Header Pin Board Pin Name Description Pin Board Pin Name Description Number Number 1 NC NC 1 VDD_REGD AO 2 lO REF FRDM xxxxx 2 3V3 2 P3V3 IC A1 Arduino UNO 5V 3 CPU RSTb RESET External 3 VDD RF VDD IF VDD A2 MCU _PA 4 VCC_3v3 3V3 V_IN 4 RGB_BLUE A3 5 VCC_5V 5V V_IN 5 RGB_GREEN A4 6 GND GND 6 RGB_RED A5 7 GND GND 8 V_IN 5V 9V Unregulated Voltage Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 Freescale Semiconductor Inc Schematic board layout and bill of material
26. rential input output pin of the MCR20 to single ended for on board signal routing Low off chip component count Programmable output power from 35 dBm to 8 dBm at the SMA connector no trap Receiver sensitivity 102 dBm typical 1 PER for 20 byte payload packet Integrated PCB inverted F type antenna and footprint for SMA RF port Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 4 Freescale Semiconductor Inc FRDM CR20A development board 32 MHz reference oscillator e 2 4 GHz frequency operation ISM band e RGB LED indicator driven by external MCU e 2 Push button switches driven by external MCU e 1 Reset button driven by XCVR or external MCU Power translator for GPIOs freescale MCU support 3 3V or external sources such as Arduino 5V Bit stream mode BSM to monitor packet data with synchronization clock e Low power operating modes with single SPI command device wake up SPI communication is enabled in LP mode e Provides access to the MCR20AVHM set of GPIOs Figure 2 shows the main board features and Input Output headers for the Freescale FRDM CR20A board Printed F Antenna RF Components Balun 6 RGB RED 5 RGB GREEN 4 RGB BLUE 3 A2 VDD_RF 2 A1 P3V3_ IC 1 A0 VDD REGD ke 8 V IN J4 1 0 Header J1 1 0 Header 32 MHz XTAL MCR20A 5 VCC 5M 4 VCC_3V3 lt 3 CPU RSTD 2 10 REF EUNC J3 1 0 Header RGB LED Power LED Reset Selector J
27. ring that the proper antenna is employed so that the limits in this Part are not exceeded 2 2 Regulatory approval for Canada IC RSS 210 This equipment complies with Industry Canada liscence exempt RSS standard s Operation is subject to the following two conditions 1 This board may not cause interference and 2 This board must accept any interference including interference that may cause undesired operation of the device Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 2 Freescale Semiconductor Inc MCR20A transceiver overview and description 2 21 26 PART 5 Appendix Le pr sent appareil est conforme aux CNR d Industrie Canada applicables aux appareils radio exempts de licence L exploitation est autoris e aux deux conditions suivantes 1 l appareil ne doit pas produire de brouillage et 2 l utilisateur de l appareil doit accepter tout brouillage radio lectrique subi m me si le brouillage est susceptible d en compromettre le fonctionnement 2 3 Electrostatic discharge considerations Although damage from electrostatic discharge ESD is much less common on these devices than on early CMOS circuits normal handling precautions should be used to avoid exposure to static discharge Qualification tests are performed to ensure that these devices can withstand exposure to reasonable levels of static without suffering any permanent damage All ESD testing is in conformity with the JESD22 S
28. tress Test Qualification for Commercial Grade Integrated Circuits During the device qualification ESD stresses were performed for the human body model HBM the machine model MM and the charge device model CDM All latch up test testing is in conformity with the JESD78 IC Latch Up Test When operating or handling the development boards or components Freescale strongly recommends using at least the grounding wrist straps plus any or all of the following ESD dissipation methods e Flexible fabric solid fixed size or disposable ESD wrist straps e Static control workstations static control monitors and table or floor static control systems e Static control packaging and transportation materials and environmental systems 2 4 Disposal instructions This product may be subject to special disposal requirements For product disposal instructions refer to freescale com productdisposal 3 MCR20A transceiver overview and description 3 1 Introduction The FRDM CR20A development board is an evaluation environment to support the Freescale MCR20AVHM SoC transceiver MCR20A a 2 4 GHz Industrial Scientific and Medical ISM transceiver intended for the IEEE 802 15 4 Standard The MCR20A is a highly integrated cost effective radio transceiver operating in the 2 36 GHz to 2 48 GHz range usually combined with a software stack and a Freescale Kinetis MCU to implement an IEEE 802 15 4 Standard platform solution Freescale supplements the MCR20
29. tributors such as Mouser Digikey Newark etc PCB manufacturing specifications This section provides the specifications used to manufacture the FRDM CR20A development printed circuit board PCB described in this guide The PCB must comply with Perfag1D 3C www perfag dk en Freescale Freedom Development Board FRDM CR20A User s Guide Rev 0 04 2015 20 Freescale Semiconductor Inc PCB manufacturing specifications e The PCB manufacturer s logo is required The PCB production week and year code is required The manufacturer s logo and week year code must be stamped on the back of the PCB solder mask The PCB manufacturer cannot insert text on the PCB either in copper or in silkscreen without written permission from Freescale Semiconductor Inc The required Underwriter s Laboratory UL Flammability Rating The level is 94V 0 www ul com plastics flame html The UL information must be stamped on the back of the PCB solder mask NOTE A complete set of design files is available for the MCR20AVHM transceiver at the Freescale website freescale com MCR20A under the Software and Tools These reference designs should be used as a starting point for a custom application The Application Note AN5003 is also available at the same web site to provide additional design guidance e The Freescale IEEE 802 15 4 ZigBee Package and Hardware Layout Considerations Reference Manual ZHDCRM is
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