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2001 Microchip Technology Inc. DS40175C-page 1
PIC12C67X AND PIC12CE67X
This document includes the programming
specifications for the following devices:
1.0 PROGRAMMING THE
PIC12C67X AND PIC12CE67X
The PIC12C67X and PIC12CE67X can be pro-
grammed using a serial method. In Serial mode, the
PIC12C67X and PIC12CE67X can be programmed
while in the users system. This allows for increased
design flexibility.
1.1 Hardware Requirements
The PIC12C67X and PIC12CE67X require two pro-
grammable power supplies, one for V
DD (2.0V to 6.0V
recommended) and one for V
PP (12V to 14V). Both
supplies should have a minimum resolution of 0.25V.
1.2 Programming Mode
The Programming mode for the PIC12C67X and
PIC12CE67X allows programming of user program
memory, special locations used for ID, and the config-
uration word for the PIC12C67X and PIC12CE67X.
Pin Diagrams:
• PIC12C671
• PIC12C672
•PIC12CE673
•PIC12CE674
PDIP, SOIC, JW
8
7
6
5
1
2
3
4
PIC12C67X
GP5/OSC1/CLKIN
GP4/OSC2/AN3/
GP3/MCLR
/VPP
VDD
VSS
GP0/AN0
GP1/AN1/V
REF
GP2/T0CKI/
AN2/INT
CLKOUT
PDIP, JW
8
7
6
5
1
2
3
4
GP5/OSC1/CLKIN
GP4/OSC2/AN3/
GP3/MCLR
/VPP
VDD
VSS
GP0/AN0
GP1/AN1/V
REF
GP2/T0CKI/
AN2/INT
CLKOUT
PIC12CE67X
In-Circuit Serial Programming
TM
for PIC12C67X and PIC12CE67X OTP MCUs
