PIC16C56A Microchip Technology Inc., PIC16C56A Datasheet - Page 14

• Manufacturer Part Number: PIC16C56A
• Description: Eprom/rom-based 8-bit Cmos Microcontroller Series
• Manufacturer: Microchip Technology Inc.

PIC16C5X
TABLE 3-2:
DS30453D-page 12
Legend: I = input, O = output, I/O = input/output, P = power, — = Not Used, TTL = TTL input, ST = Schmitt Trigger
OSC2/CLKOUT
OSC1/CLKIN
Pin Name
T0CKI
MCLR
RC0
RC1
RC2
RC3
RC4
RC5
RC6
RC7
RA0
RA1
RA2
RA3
RB0
RB1
RB2
RB3
RB4
RB5
RB6
RB7
V
V
N/C
DD
SS
input
PINOUT DESCRIPTION
DIP
3,5
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
28
27
26
11
6
7
8
9
1
2
4
Pin Number
SOIC
3,5
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
28
27
26
6
7
8
9
1
2
4
SSOP
1,14
3,4
10
12
13
15
16
17
18
19
20
21
22
23
24
25
28
27
26
11
—
5
6
7
8
9
2
Type
Pin
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
-
—
O
P
P
I
I
I
PIC16C55, PIC16C57, PIC16CR57
Preliminary
Buffer
Type
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
ST
ST
ST
—
—
—
—
Bi-directional I/O port
Bi-directional I/O port
Bi-directional I/O port
Clock input to Timer0. Must be tied to V
use, to reduce current consumption.
Master clear (RESET) input. This pin is an active low
RESET to the device.
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.
Positive supply for logic and I/O pins.
Ground reference for logic and I/O pins.
Unused, do not connect.
Oscillator crystal input/external clock source input.
Description
2002 Microchip Technology Inc.
SS
or V
DD,
if not in