PIC16C62B/72A
TABLE 1-1
PIC16C62B/PIC16C72A PINOUT DESCRIPTION
DIP
Pin#
SOIC
Pin#
I/O/P
Type
Buffer
Type
Pin Name
Description
(3)
OSC1/CLKIN
9
9
I
Oscillator crystal input/external clock source input.
ST/CMOS
OSC2/CLKOUT
10
10
O
—
Oscillator crystal output. Connects to crystal or resonator in
crystal oscillator mode. In RC mode, the OSC2 pin outputs
CLKOUT which has 1/4 the frequency of OSC1, and denotes
the instruction cycle rate.
1
1
I/P
ST
Master clear (reset) input or programming voltage input. This
pin is an active low reset to the device.
MCLR/VPP
PORTA is a bi-directional I/O port.
RA0 can also be analog input 0
(4)
2
3
4
5
6
2
3
4
5
6
I/O
I/O
I/O
I/O
I/O
TTL
TTL
TTL
TTL
ST
RA0/AN0
(4)
RA1 can also be analog input 1
RA1/AN1
(4)
RA2 can also be analog input 2
RA2/AN2
(4)
RA3 can also be analog input 3 or analog reference voltage
RA3/AN3/VREF
RA4/T0CKI
RA4 can also be the clock input to the Timer0 module.
Output is open drain type.
(4)
7
7
I/O
TTL
RA5 can also be analog input 4 or the slave select for the
synchronous serial port.
RA5/SS/AN4
PORTB is a bi-directional I/O port. PORTB can be software
programmed for internal weak pull-up on all inputs.
(1)
RB0/INT
RB1
21
22
23
24
25
26
27
28
21
22
23
24
25
26
27
28
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
TTL/ST
TTL
RB0 can also be the external interrupt pin.
RB2
TTL
RB3
TTL
RB4
TTL
Interrupt on change pin.
RB5
TTL
Interrupt on change pin.
(2)
RB6
TTL/ST
TTL/ST
Interrupt on change pin. Serial programming clock.
Interrupt on change pin. Serial programming data.
PORTC is a bi-directional I/O port.
(2)
RB7
RC0/T1OSO/T1CKI
11
11
I/O
ST
RC0 can also be the Timer1 oscillator output or Timer1
clock input.
RC1/T1OSI
RC2/CCP1
12
13
12
13
I/O
I/O
ST
ST
RC1 can also be the Timer1 oscillator input.
RC2 can also be the Capture1 input/Compare1 output/
PWM1 output.
RC3/SCK/SCL
RC4/SDI/SDA
14
15
14
15
I/O
I/O
ST
ST
RC3 can also be the synchronous serial clock input/output
for both SPI and I C modes.
2
RC4 can also be the SPI Data In (SPI mode) or
2
data I/O (I C mode).
RC5/SDO
16
17
16
17
I/O
I/O
I/O
P
ST
ST
ST
—
RC5 can also be the SPI Data Out (SPI mode).
RC6
RC7
18
18
VSS
8, 19
20
8, 19
20
Ground reference for logic and I/O pins.
Positive supply for logic and I/O pins.
VDD
P
—
Legend: I = input
O = output
— = Not used
I/O = input/output
TTL = TTL input
P = power or program
ST = Schmitt Trigger input
Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt.
2: This buffer is a Schmitt Trigger input when used in serial programming mode.
3: This buffer is a Schmitt Trigger input when configured in RC oscillator mode and a CMOS input otherwise.
4: The A/D module is not available on the PIC16C62B.
DS35008B-page 6
Preliminary
1999 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
