From Microchip Technology, Inc.
To develop code on a PIC16C52 device, a PIC16C54/JW part can be used. In order to use a PIC16C54/JW device, the following conditions should be followed: 1. A PIC16C54/JW has 512 words (0x1FF) of program memory, whereas a PIC16C52 has 384 bytes (0x17F) of program memory. The ?extra? locations should be programmed as follows: a) Location 0x180 should be programmed with a ?GOTO 0x00? instruction b) Locations 0x181 through 0x1FF should be programmed with a ?GOTO 0x17F? instruction. See Figure 1 for details, and for a standard ?skeleton? program, use the code in Example 1. 2. The PIC16C54/JW has a Watchdog Timer (WDT), while the PIC16C52 does not. Therefore, the WDT on the PIC16C54/JW must be disabled. The ?__CONFIG? command used in Example 1 disables the WDT. 3. The PIC16C54/JW has four oscillator modes, while the PIC16C52 has two. Therefore, only RC and XT oscillator modes should be used. The ?__CONFIG? command used in Example 1 takes care of programming the XT Oscillator mode, if required.
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