PIC16C71X
TABLE 3-1:
Pin Name
OSC1/CLKIN
OSC2/CLKOUT
PIC16C710/71/711/715 PINOUT DESCRIPTION
DIP SSOP
Pin# Pin#
(4)
16
15
18
17
SOIC
Pin#
16
15
I/O/P
Type
I
O
Buffer
Type
Description
MCLR/V
PP
4
4
4
I/P
ST/CMOS
(3)
Oscillator crystal input/external clock source input.
—
Oscillator crystal output. Connects to crystal or resonator in crystal
oscillator mode. In RC mode, OSC2 pin outputs CLKOUT which has
1/4 the frequency of OSC1, and denotes the instruction cycle rate.
ST
Master clear (reset) input or programming voltage input. This pin is
an active low reset to the device.
PORTA is a bi-directional I/O port.
TTL
TTL
TTL
TTL
ST
RA0 can also be analog input0
RA1 can also be analog input1
RA2 can also be analog input2
RA3 can also be analog input3 or analog reference voltage
RA4 can also be the clock input to the Timer0 module. Output is
open drain type.
PORTB is a bi-directional I/O port. PORTB can be software pro-
grammed for internal weak pull-up on all inputs.
RB0 can also be the external interrupt pin.
RA0/AN0
RA1/AN1
RA2/AN2
RA3/AN3/V
REF
RA4/T0CKI
17
18
1
2
3
19
20
1
2
3
17
18
1
2
3
I/O
I/O
I/O
I/O
I/O
RB0/INT
RB1
RB2
RB3
RB4
RB5
RB6
RB7
V
SS
V
DD
Legend: I = input
Note 1:
2:
3:
4:
6
7
8
9
10
11
12
13
5
14
7
8
9
10
11
12
13
14
4, 6
15, 16
6
7
8
9
10
11
12
13
5
14
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
P
P
TTL/ST
(1)
TTL
TTL
TTL
TTL
TTL
TTL/ST
(2)
TTL/ST
(2)
—
—
Interrupt on change pin.
Interrupt on change pin.
Interrupt on change pin. Serial programming clock.
Interrupt on change pin. Serial programming data.
Ground reference for logic and I/O pins.
Positive supply for logic and I/O pins.
O = output
I/O = input/output
P = power
— = Not used
TTL = TTL input
ST = Schmitt Trigger input
This buffer is a Schmitt Trigger input when configured as the external interrupt.
This buffer is a Schmitt Trigger input when used in serial programming mode.
This buffer is a Schmitt Trigger input when configured in RC oscillator mode and a CMOS input otherwise.
The PIC16C71 is not available in SSOP package.
©
1997 Microchip Technology Inc.
DS30272A-page 9
MICROCHIP [ MICROCHIP TECHNOLOGY ]
