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RFPIC12C509AF Datasheet(PDF) 56 Page - Microchip Technology

Part # RFPIC12C509AF
Description  18/20-Pin 8-Bit CMOS Microcontroller with UHF ASK/FSK Transmitter
PDF  104 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

RFPIC12C509AF Datasheet(HTML) 56 Page - Microchip Technology

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rfPIC12C509AG/509AF
DS70031A-page 54
Preliminary
© 2001 Microchip Technology Inc.
8.9
Program Verification/Code
Protection
If the code protection bit has not been programmed, the
on-chip program memory can be read out for verifica-
tion purposes.
The
first
64
locations
can
be
read
by
the
rfPIC12C509AG/509AF regardless of the code protec-
tion bit setting.
The last memory location can be read regardless of the
code protection bit setting on the rfPIC12C509AG/
509AF.
8.10
ID Locations
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 '0's.



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