PIC16F7X
TABLE 1-2:
PIC16F73 AND PIC16F76 PINOUT DESCRIPTION
DIP
SSOP
SOIC
Pin#
9
MLF
Pin#
6
I
I
10
7
O
I/O/P
Type
Buffer
Type
Pin Name
Description
OSC1/CLKI
OSC1
CLKI
OSC2/CLKO
OSC2
ST/CMOS
(3)
Oscillator crystal or external clock input.
Oscillator crystal input or external clock source input. ST
buffer when configured in RC mode. Otherwise CMOS.
External clock source input. Always associated with pin
function OSC1 (see OSC1/CLKI, OSC2/CLKO pins).
—
Oscillator crystal or clock output.
Oscillator crystal output.
Connects to crystal or resonator in Crystal Oscillator
mode.
In RC mode, OSC2 pin outputs CLKO, which has 1/4 the
frequency of OSC1 and denotes the instruction cycle rate.
Master Clear (input) or programming voltage (output).
Master Clear (Reset) input. This pin is an active low
RESET to the device.
Programming voltage input.
PORTA is a bi-directional I/O port.
CLKO
MCLR/V
PP
MCLR
V
PP
RA0/AN0
RA0
AN0
RA1/AN1
RA1
AN1
RA2/AN2
RA2
AN2
RA3/AN3/V
REF
RA3
AN3
V
REF
RA4/T0CKI
RA4
T0CKI
RA5/SS/AN4
RA5
SS
AN4
Legend:
Note
O
1
26
I
P
2
27
I/O
I
3
28
I/O
I
4
1
I/O
I
5
2
I/O
I
I
6
4
I/O
I
7
5
I/O
I
I
TTL
ST
TTL
TTL
TTL
TTL
ST
Digital I/O.
Analog input 0.
Digital I/O.
Analog input 1.
Digital I/O.
Analog input 2.
Digital I/O.
Analog input 3.
A/D reference voltage input.
Digital I/O – Open drain when configured as output.
Timer0 external clock input.
Digital I/O.
SPI slave select input.
Analog input 4.
I = input
O = output
I/O = input/output
P = power
— = Not used
TTL = TTL input
ST = Schmitt Trigger input
1:
This buffer is a Schmitt Trigger input when configured as the external interrupt.
2:
This buffer is a Schmitt Trigger input when used in Serial Programming mode.
3:
This buffer is a Schmitt Trigger input when configured in RC Oscillator mode and a CMOS input otherwise.
DS30325B-page 8
2002 Microchip Technology Inc.
MICROCHIP [ MICROCHIP TECHNOLOGY ]
