PIC16C5X
TABLE 3-1:
PINOUT DESCRIPTION - PIC16C52, PIC16C54s, PIC16CR54s, PIC16C56s,
PIC16CR56s, PIC16C58s, PIC16CR58s
DIP, SOIC SSOP I/O/P Input
No.
No. Type Levels
17
18
1
2
6
7
8
9
10
11
12
13
3
4
19
20
1
2
7
8
9
10
11
12
13
14
3
4
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
I
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
ST
ST
Bi-directional I/O port
Description
Name
RA0
RA1
RA2
RA3
RB0
RB1
RB2
RB3
RB4
RB5
RB6
RB7
T0CKI
MCLR/V
PP
Bi-directional I/O port
OSC1/CLKIN
OSC2/CLKOUT
16
15
18
17
I
O
ST
—
V
DD
14
15,16
P
—
V
SS
5
5,6
P
—
Legend: I = input, O = output, I/O = input/output,
P = power, — = Not Used, TTL = TTL input,
ST = Schmitt Trigger input
Clock input to Timer0. Must be tied to V
SS
or V
DD,
if not in
use, to reduce current consumption.
Master clear (reset) input/programming voltage input. This
pin is an active low reset to the device. Voltage on the
MCLR/V
PP
pin must not exceed V
DD
to avoid unintended
entering of programming mode.
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.
Positive supply for logic and I/O pins.
Ground reference for logic and I/O pins.
©
1998 Microchip Technology Inc.
Preliminary
DS30453B-page 11
MICROCHIP [ MICROCHIP TECHNOLOGY ]
