This application note describes a K EELOQ
®
code hopping
decoder implemented on a Microchip Mid-Range
PICmicro microcontroller (PIC16CE624). The software
has been designed as a group of independent modules
(standard assembly include files “.inc”). For clarity and
ease of maintenance each module covers a single
function. Each module can be modified to accommodate
different behavior, support a different microcontroller
(MCU), and/or a different set of peripherals (memories,
timers, etc.). AN742
Modular PICmicro Mid-Range MCU Code Hopping Decoder
FIGURE 1: DECODER PINOUT
Author: Lucio Di Jasio
Microchip Technology Inc. LRNIN 1 18 RFIN
LRNOUT 2 17 NU
NU 3 16 OSCIN
OVERVIEW MCLR 4 15 OSCOUT
This application note describes a KEELOQ code hopping GND 5 14 VDD……
