APGRD001 Microchip Technology, APGRD001 Datasheet - Page 11

• Manufacturer Part Number: APGRD001
• Description: REF DESIGN PKE PIC16F639
• Manufacturer: Microchip Technology
• Type: PKE, RKEr

Specifications of APGRD001

• Frequency: 125kHz
• Processor To Be Evaluated: PIC16F639
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: PIC16F639, PIC16F636, PIC18F2680
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

FIGURE 10:
CONCLUSION
The PIC16F639 device is an easy-to-use, low cost and
secure bidirectional communication transponder. This
device can be used for various smart hands-free
passive keyless entry applications. A basic configura-
tion of the Passive Keyless Entry (PKE) transponder is
shown in Figure 2. Example schematics for the tran-
sponder and the base station are shown in Appendix
B: “Transponder” and Appendix C: “Base Station”.
The firmware examples for the transponder and the
base station are also provided (see Appendix A:
“Source Code”). Users can modify the provided
examples for their application purposes.
MEMORY USAGE
Transponder:
• Program Memory – 1131 words
• Data Memory – 65 Bytes
Base Station:
• Program Memory – 1178 words
• Data Memory – 405 Bytes
© 2007 Microchip Technology Inc.
COMMUNICATION LINK BETWEEN BASE STATION AND TRANSPONDER
REFERENCES
“PIC12F635/PIC16F636/639 Data Sheet,” DS41232,
Microchip Technology Inc.
AN710,
Applications,” Application Note (DS00710), Microchip
Technology Inc.
AN959, “Using the PIC16F639 MCU for Smart
Wireless Applications,” Application Note (DS00950),
Microchip Technology Inc.
TB088,
Technical Brief (DS91088) Microchip Technology Inc.
TB090, “MCP2030 Three - Channel Analog Front-End
Device
Microchip Technology Inc.
“MCP2030
Technology Inc.
“Coilcraft Data Sheet”, (P/N 4308 and 5315 Series);
http://www.coilcraft.com
Overview,”
“PIC16F639
“Antenna
Data
Sheet”,
Technical
Circuit
Microcontroller
(DS21981),
Design
AN1024
Base Station
Command
Brief
Transponder
Response
DS01024B-page 11
Step 1
Step 2
Step 3
Step 4
(DS91090A)
for
Overview,”
Microchip
RFID