PIC16C62X
TABLE 3-1:
Name
OSC1/CLKIN
OSC2/CLKOUT
PIC16C62X PINOUT DESCRIPTION
DIP/
SOIC
Pin #
16
15
SSOP
Pin #
18
17
I/O/P
Type
I
O
Buffer
Type
Description
ST/CMOS 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.
Master clear (reset) input/programming voltage input.
This pin is an active low reset to the device.
PORTA is a bi-directional I/O port.
Analog comparator input
Analog comparator input
Analog comparator input or V
REF
output
Analog comparator input /output
Can be selected to be the clock input to the Timer0
timer/counter or a comparator output. Output is open
drain type.
PORTB is a bi-directional I/O port. PORTB can be
software programmed for internal weak pull-up on all
inputs.
MCLR/V
PP
4
4
I/P
ST
RA0/AN0
RA1/AN1
RA2/AN2/V
REF
RA3/AN3
RA4/T0CKI
17
18
1
2
3
19
20
1
2
3
I/O
I/O
I/O
I/O
I/O
ST
ST
ST
ST
ST
RB0/INT
RB1
RB2
RB3
RB4
RB5
RB6
RB7
V
SS
V
DD
6
7
8
9
10
11
12
13
5
14
7
8
9
10
11
12
13
14
5,6
15,16
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
TTL/ST
—
—
(2)
(2)
RB0/INT can also be selected as an external
interrupt pin.
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.
Legend:
O = output
I/O = input/output
P = power
— = Not used
I = Input
ST = Schmitt Trigger input
TTL = TTL input
Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt.
Note 2: This buffer is a Schmitt Trigger input when used in serial programming mode.
©
1998 Microchip Technology Inc.
Preliminary
DS30235G-page 11
MICROCHIP [ MICROCHIP TECHNOLOGY ]
