PIC16HV540 Microchip Technology, PIC16HV540 Datasheet - Page 42

• Manufacturer Part Number: PIC16HV540
• Description: Enhanced PIC16C54 EPROM-Based 8-Bit CMOS Microcontroller
• Manufacturer: Microchip Technology

PIC16HV540
7.11
If the code protection bit(s) have not been pro-
grammed, the on-chip program memory can be read
out for verification purposes.
7.12
Four memory locations are designated as ID locations
where the user can store checksum or other code-iden-
tification numbers. These locations are not accessible
during normal execution but are readable and writable
during program/verify.
Use only the lower 4 bits of the ID locations and always
program the upper 8 bits as ‘1’s.
DS40197B-page 42
Note:
Note:
Program Verification/Code Protection
ID Locations
Microchip does not recommend code pro-
tecting windowed devices.
Microchip will assign a unique pattern
number for QTP and SQTP requests and
for ROM devices. This pattern number will
be unique and traceable to the submitted
code.
Preliminary
2000 Microchip Technology Inc.