AFE4110 Thermometer Demonstration Board
Contents
1. TAC TR JTAG_ LCD SEG CD SEG8 SEG SEG6 SEG5 VSS 3 SENSE LCD SEGE LCD SEG7 LCD SEG6 LCD SEGS For 1 internal charge pomps LCD charge pump and CP18 cop is 18xvbat charge pump TEXAS INSTRUMENTS SEMICONDUCTOR OPERATIONS CODE IDENTITY es NUMBER 01295 LCD COMO LCD COMI LCD COM2 LCD COM3 Buzzin aT Bs LCD_SEGO PKLCS1212E4001 R1 BuzzOut CODE IDENTITY INSTRUMENTS NUMBER CTOR OPERATIONS 1295 ONDU P1 2 is AOUT P12 R8 AND R10 TO BE 0 1 MAXIMUM R10 TOLERANCE Z 01 I R13 TO BE REPLACED R13 47Kohms WITH VUZ THERMISTOR 1 5 EVQ P2H028 wakeup switch SENSE TEXAS INSTRUMENTS SEMICONDUCTOR OPERATIONS CODE IDENTITY NUMB EEPROM and BU DILUZ Need to verify the blue wire to see the PORT pin is right or not UER S INSTRUMENTS UC CODE IDENTITY NUMBER TOR OPERATIONS K Evaluation Board Kit Important Notice Texas Instruments TI provides the enclosed product s under the following conditions This evaluation board kit is intended for use for ENGINEERING DEVELOPMENT DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end product fit for general consumer use Persons handling the product s must have electronics training and observe good engineering practice standards As such the goods being provid2. 8 DIKE Screen BONO ysni i e E e E E E O EEE 5 List of Tables 1 Description of Main Board Components ppt 2 2 elles E E 6 1 Hardware Description Figure 1 shows the front and back sides of the thermometer The board demonstrates an accurate low cost single chip temperature measurement solution based on the AFE4110 This device is a general purpose low cost 1 5 V microcontroller optimized for this application with features like an internal 1 85 V 3 3 V charge pump for LCD GPIO interface buzzer driver low power sleep mode etc See the AFE4110 data sheet SLLSE48 for further details The measurement is done using an external thermistor with a negative temperature coefficient NTC characteristic resistance decreases with increasing temperature The thermistor response has been calibrated using two temperature points at 31 C and 43 C for an overall typical accuracy of 0 1 C over that range when measured in a calibration bath The system has not been designed to measure human body temperature and must not be used for health diagnosis purposes SLAUA17 December 2011 AFE4110 Thermometer Demonstration Board 1 Submit Documentation Feedback Copyright O 2011 Texas Instruments Incorporated I TEXAS INSTRUMENTS Hardware Description www ti com Battery E Holder fhia 47 AFE411 DEMO PEN REVA JTAG header Piezo buzzer AFE4110 TEXAS INSTRUMENTS E
3. 1 Users Guide I TEXAS SLAU417 December 2011 INSTRUMENTS AFE4110 Thermometer Demonstration Board This user s guide provides a general description of the AFE4110 thermometer demonstration board demo pen Use this document with the AFE4110 data sheet to get a broader understanding of the functions and applications of this device Contents 1 Hardware DescriptlOli sxxuxacu va a deve ru xoa n RR RREA MEER XR E ERERIRRRRRERREXREN E NEuE ue RET VR Rn E eai R ANE ER races 1 2 Getting Started PC 3 2 1 Inserting Battery and Reading the LCD Display c eese 3 2 2 Board Jumper Configuration s esesuseo eue mek EEE RUE ARCEM NE EA E AAEE EAE NER DU eine 4 3 El ctrical Characteristics 4 4 SCHEMatics and Layout D 4 4 1 Segue cle PCI D 4 4 2 EVO Ug UIT S 5 Bill f TI T L 6 List of Figures 1 AFE4110 Thermometer Demonstration Board Front Bottom Layer and Back Top Layer 2 2 Firmware Flowchart ceeeseeeeeeeee ee ene nnnm hme hh hh nnn hee nhe eme e E eme e nennen nnn 3 3 Inserting Battery Into HOIder cece cece eee eee eee eee e eens n I HI m HI nmn HI enn men nemen nnn 4 4 Measured Temperature Accuracy vs Temperature ceesseessseeee nenne nm emen nne nnn nnn 4 5 Top EV Trejo or pac 5 6 Bottom Layer Coppa sssr DD m 5 7 Silk Soreem eot 5
4. BATT HOLDER THU 3P 1 MEMORY PROTECT DEVICES BHX1 LR44 SM BC1 DNI BATT HOLDER THU 3P 2 MURATA PKLCS1212E4001 R1 SP1 DNI SP2 BUZZER SMT 5 AVX 0402YC104KAT2A C7 C12 C20 C27 C29 CAP SMT 0402 1 TDK C1005C0G1E102J C28 CAP SMT 0402 2 SAMSUNG CLO5A475MQ5NRNG C15 C16 CAP SMT 0402 2 PANASONIC ECJ 0EB1H102K C21 C22 CAP SMT 0402 2 PANASONIC ECJ 1VB0J106M C11 C30 CAP SMT 0603 2 HEADER SMT 6P 1CTRS JP2 JP3 CUSTOMER INSTALLED 1 SOFTBAUGH SBLCDA8 U3 DISPLAY SMT 15P 1 COPAL ELECTRONICS CAS 120TA swi SWITCH SLID 3P 1 ST MICRO M95128 RMN6TP U2 IC SMT SOIC 8N 1 TI AFE4110 U1 MODULE 1 SUSUMU RG1005P 303 B T5 R10 RES SMT 0402 1 MURATA NCP15WB473J03RC R13 THERMISTOR SMT 0402 1 PANASONIC ERJ 2RKF1004X R11 RES SMT 0402 1 SUSUMU RG1005P 6492 B T5 R8 RES SMT 0402 1 SUSUMU RG1005N102B R16 RES SMT 0402 1 PANASONIC EVQ P2H02B SW2 SWITCH SMT 2P 3 KEYSTONE ELECTRONICS 5001 TP1 TP2 DNI TP3 TESTPOINT THU 1P 6 AFE4110 Thermometer Demonstration Board SLAUA17 December 201 1 Submit Documentation Feedback Copyright O 2011 Texas Instruments Incorporated ECR 2119959 11 1 11 MPK BHX1 LR44 SM Supply the DUT and JTAG IF with CP18 or JTAG_VCCO 18V x VBAT JTAG_TDO AF TSMAN a m m baie CODE IDENTITY CK SMYTH 11 01 11 TEXAS INSTRUMENTS NUMBER rii SEMICONDUCTOR OPERATIONS 12985 UCK SMYT ELEASED E KORSON 011 0171 1 si or ie Cc mn BuzzOut VDDIO JTAG_TCK
5. CONSEQUENTIAL DAMAGES TI currently deals with a variety of customers for products and therefore our arrangement with the user is not exclusive TI assumes no liability for applications assistance customer product design software performance or infringement of patents or services described herein Please read the User s Guide and specifically the Warnings and Restrictions notice in the User s Guide prior to handling the product This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer or visit www ti com esh No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine process or combination in which such TI products or services might be or are used FCC Warning This evaluation board kit is intended for use for ENGINEERING DEVELOPMENT DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end product fit for general consumer use It generates uses and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC rules which are designed to provide reasonable protection against radio frequency interference Operation of this equipment in other environments may cause interference with radio communications in which case the user at
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7. battery Code Loaded from EEPROM Thermistor resistance measured Temperature displayed after each readout interval Readout time completed beep switch to LPM5 sleep Push button pressed Device in Sleep Mode Figure 2 Firmware Flowchart Inserting Battery and Reading the LCD Display The battery must be inserted into the battery holder as shown in Figure 3 with the positive side of the battery on top Once this is done the LCD displays the Firmware Version and the Hardware version followed by the temperature display AFE4110 Thermometer Demonstration Board 3 Copyright 2011 Texas Instruments Incorporated I TEXAS INSTRUMENTS Electrical Characteristics www ti com 2 2 Measured temperature accuracy in C 4 1 0 50 EDGE 6541643 REVA 4 471 ERII g4v 071 AFE411 DEMO PEN REVA Figure 3 Inserting Battery Into Holder Board Jumper Configuration Power to the VDDIO pin of the AFE4110 and to the JTAG interface can be supplied from either the charge pump CP18CAP 1 8 x VBAT or from the JTAG_VCCO This is controlled by the SW1 switch on the demonstration board By default the switch SW1 is in the USE position See Section 4 1 for schematics and Figure 7 and Figure 8 for the top and bottom silk screen views respectively In this configuration the AFE4110 VDDIO is powered from CP18CAP 1 8 V charge pump For programming debugging purposes the AFE4110 VDDIO must be powered
8. e Box 655303 Dallas Texas 75265 Copyright O 2011 Texas Instruments Incorporated IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries TI reserve the right to make corrections modifications enhancements improvements and other changes to its products and services at any time and to discontinue any product or service without notice Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete All products are sold subject to Tl s terms and conditions of sale supplied at the time of order acknowledgment TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI s standard warranty Testing and other quality control techniques are used to the extent Tl deems necessary to support this warranty Except where mandated by government requirements testing of all parameters of each product is not necessarily performed TI assumes no liability for applications assistance or customer product design Customers are responsible for their products and applications using Tl components To minimize the risks associated with customer products and applications customers should provide adequate design and operating safeguards TI does not warrant or represent that any license either express or implied is granted under any TI patent right copyright mask work right or other TI intellectual property ri
9. ed are not intended to be complete in terms of required design marketing and or manufacturing related protective considerations including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards This evaluation board kit does not fall within the scope of the European Union directives regarding electromagnetic compatibility restricted substances RoHS recycling WEEE FCC CE or UL and therefore may not meet the technical requirements of these directives or other related directives Should this evaluation board kit not meet the specifications indicated in the User s Guide the board kit may be returned within 30 days from the date of delivery for a full refund THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED IMPLIED OR STATUTORY INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE The user assumes all responsibility and liability for proper and safe handling of the goods Further the user indemnifies TI from all claims arising from the handling or use of the goods Due to the open construction of the product it is the user s responsibility to take any and all appropriate precautions with regard to electrostatic discharge EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR
10. from the JTAG_VCCO by sliding the switch SW1 to pin 1 position Electrical Characteristics Figure 4 displays the typical resulting accuracy of the demo pen after 2 point calibration at 31 C and 43 C 0 70 0 60 0 40 4 0 30 0 20 0 10 1 0 00 9 AY XY o nb gt A aS ap E mA E NM K Ba e Temperature in C Figure 4 Measured Temperature Accuracy vs Temperature Schematics and Layout Schematics The schematics are located at the end of this document AFE4110 Thermometer Demonstration Board SLAUA17 December 201 1 Submit Documentation Feedback Copyright 2011 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com Schematics and Layout 42 Layouts sn OO A5 SHS i r JD a e 1 U2 c27 TP2 RIG 0 Cati i sp TEXAS INSTRUMENTS E ux ds T Bui hs Lis TP3 Pi C7 at Y b UT ps y ses VEENITS DEWO bEM BEAY pug lo cid Deinde a Figure 8 Silk Screen Bottom SLAUA417 December 2011 AFE4110 Thermometer Demonstration Board 5 Submit Documentation Feedback Copyright 2011 Texas Instruments Incorporated I TEXAS INSTRUMENTS Bill of Materials www ti com 5 Bill of Materials Table 2 Bill of Materials QTY MFG MFG PART NO REF DES DESCRIPTION 1 KEYSTONE 2998 BC2
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12. his own expense will be required to take whatever measures may be required to correct this interference EVM Warnings and Restrictions It is important to operate this EVM within the input voltage range of 0 3 V to VDD 0 3 V and the output voltage range of 0 3 V to VDD 0 3 V Exceeding the specified input range may cause unexpected operation and or irreversible damage to the EVM If there are questions concerning the input range please contact a TI field representative prior to connecting the input power Applying loads outside of the specified output range may result in unintended operation and or possible permanent damage to the EVM Please consult the EVM User s Guide prior to connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative During normal operation some circuit components may have case temperatures greater than 50 C The EVM is designed to operate properly with certain components above 25 C as long as the input and output ranges are maintained These components include but are not limited to linear regulators switching transistors pass transistors and current sense resistors These types of devices can be identified using the EVM schematic located in the EVM User s Guide When placing measurement probes near these devices during operation please be aware that these devices may be very warm to the touch Mailing Address Texas Instruments Post Offic
13. tice that in the final application the EEPROM is not needed if the code is burnt into the ROM version of the AFE4110 Piezo Buzzer The buzzer is used to indicate the end of the temperature display Following this the AFE4110 goes into LPM5 sleep mode Power Supply Ground Onboard connectors for 1 5 V external power supply and ground Can be used instead of battery Header LCD The AFE4110 has an internal charge pump to provide constant 3 3 V supply operation to the LCD for constant contrast even when battery voltage drops Push Button Switch This switch is used to bring the AFE4110 out of the LPM5 mode See Section 2 for the sequence of events JTAG Header Provided for programming debugging purposes Battery Holder 1 5 V button cell holder 2 AFE4110 Thermometer Demonstration Board SLAU417 December 2011 Submit Documentation Feedback Copyright O 2011 Texas Instruments Incorporated l TEXAS INSTRUMENTS www ti com 2 2 1 SLAU417 December 2011 Submit Documentation Feedback Getting Started Getting Started After inserting the battery in the battery holder the temperature is displayed in the LCD Several readings are displayed during the next 45 seconds After the final temperature readout the device beeps and goes into LPM5 sleep mode After that the user needs to press and hold the push button switch for approximately 4 seconds to activate the sequence once again Insert
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15. xtra power and ground header Figure 1 AFE4110 Thermometer Demonstration Board Front Bottom Layer and Back Top Layer As the AFE4110 lacks any nonvolatile memory to store code or data unless is burnt permanently into its ROM the board actually uses the AFE4110 RAM based 15 KB emulation version and loads at boot time the thermometer application code 3 KB long from an external 128k bit SPI EEPROM Notice that in the final application the EEPROM is not needed if the code is burnt into the ROM version of the AFE4110 Furthermore the device displays the temperature in Celsius with 0 1 C resolution using a 5 digit LCD display The solution also includes a piezo based buzzer along with a JTAG interface for programming or debugging Table 1 presents a list of key components Finally the kit comes with a 1 5 V button cell battery SR60 standard with a typical capacity of 20 mAh under standard operating conditions Table 1 Description of Main Board Components Component Description Thermistor Murata NCP15WB473J03RC NTC thermistor 47 KQ 5 and a B constant tolerance of 1 This implementation demonstrates a cost effective solution by complementing the use of a relaxed tolerance thermistor with a 2 point calibration EEPROM 128k bit SPI EEPROM When a battery is inserted into the holder the code is loaded from the EEPROM into the AFE4110 internal RAM and the AFE4110 proceeds to measure the resistance of the thermistor No
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