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PIC16C62X Datasheet PDF : 108 Pages
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PIC16C62X
TABLE 3-1: PIC16C62X PINOUT DESCRIPTION
Name
DIP/
SOIC
Pin #
SSOP
Pin #
I/O/P
Type
Buffer
Type
Description
OSC1/CLKIN
OSC2/CLKOUT
MCLR/VPP
16
18
15
17
4
4
I
ST/CMOS Oscillator crystal input/external clock source input.
O
— 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.
I/P
ST 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.
RA0/AN0
17
19
I/O
ST
Analog comparator input
RA1/AN1
RA2/AN2/VREF
RA3/AN3
RA4/T0CKI
18
20
I/O
1
1
I/O
2
2
I/O
3
3
I/O
ST
Analog comparator input
ST
Analog comparator input or VREF output
ST
Analog comparator input /output
ST
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.
RB0/INT
RB1
6
7
I/O TTL/ST(1)
RB0/INT can also be selected as an external
interrupt pin.
7
8
I/O
TTL
RB2
8
9
I/O
TTL
RB3
9
10
I/O
TTL
RB4
10
11
I/O
TTL
Interrupt on change pin.
RB5
11
12
I/O
TTL
Interrupt on change pin.
RB6
12
13
I/O TTL/ST(2)
Interrupt on change pin. Serial programming clock.
RB7
13
14
I/O TTL/ST(2)
Interrupt on change pin. Serial programming data.
VSS
5
5,6
P
— Ground reference for logic and I/O pins.
VDD
14 15,16
P
— 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
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