PIC16F627A Datasheet, PDF (14/168 Pages) Microchip Technology – FLASH-Based 8-Bit CMOS Microcontrollers

PIC16F627A/628A/648A
TABLE 3-2: PIC16F627A/628A/648A PINOUT DESCRIPTION
Name
Function Input Type Output Type
Description
RB4/PGM
RB5
RB6/T1OSO/T1CKI/PGC
RB7/T1OSI/PGD
VSS
VDD
Legend: O = Output
— = Not used
TTL = TTL Input
RB4
PGM
RB5
RB6
T1OSO
T1CKI
PGC
RB7
T1OSI
PGD
VSS
VDD
TTL
CMOS Bi-directional I/O port. Interrupt-on-pin
change. Can be software programmed for
internal weak pull-up.
ST
—
Low voltage programming input pin. When
low voltage programming is enabled, the
interrupt-on-pin change and weak pull-up
resistor are disabled.
TTL
CMOS Bi-directional I/O port. Interrupt-on-pin
change. Can be software programmed for
internal weak pull-up.
TTL
CMOS ^{Bi-directional I/O port. Interrupt-on-pin}
change. Can be software programmed for
internal weak pull-up.
—
XTAL Timer1 oscillator output.
ST
—
Timer1 clock input.
ST
—
ICSP Programming Clock.
TTL
CMOS Bi-directional I/O port. Interrupt-on-pin
change. Can be software programmed for
internal weak pull-up.
XTAL
—
Timer1 oscillator input.
ST
CMOS ICSP Data I/O
Power
—
Ground reference for logic and I/O pins
Power
—
Positive supply for logic and I/O pins
CMOS = CMOS Output
I
= Input
OD = Open Drain Output
P = Power
ST = Schmitt Trigger Input
AN = Analog
DS40044A-page 12
Preliminary
 2002 Microchip Technology Inc.