WIRELESS SECURITY REMOTE CONTROL
DEVELOPMENT KIT USER’S GUIDE
Chapter 6. Developing with the Wireless Security Remote
Control Development Kit
6.1
INTRODUCTION
This chapter provides some suggestions regarding the development of an RKE
solution on the Wireless Security Remote Control Development Kit. General design
considerations are provided on both the transmitter and receiver side.
6.2
DEVELOPING WITH A KEY FOB AS TRANSMITTER
To modify the hex code in the key fob, the developer needs to open the red plastic
enclosure. The ICSP™ port is available on the key fob PCB as six contact areas. To
program the PIC12LF1840T39A on the PCB, the developer needs to perform the
following steps:
• Remove the PCB board from the plastic enclosure and lay the PCB board on a
nonconductive surface.
• Align the six ICSP pins to the contact areas on the PCB. Push the ICSP pins to
the contact areas and avoid any movement during programming. Figure 6-1
shows how to program the key fob.
• When testing the key fob transmission when the plastic enclosure is open, avoid
touching any PCB area with your finger.
Note: For simplicity, all key fobs in the demo share the same serial number.
FIGURE 6-1:
PROGRAMMING THE KEY FOB
As a secured RKE system, KEELOQ security keys, especially the manufacturer key is
essential to the security of the whole system. It is highly recommended to use
®
code-protect of the PIC MCU memory.
2012 Microchip Technology Inc.
DS41646A-page 31
MICROCHIP [ MICROCHIP ]
