PIC16C72AT-20/SP 查看數據表（PDF） - Microchip Technology
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PIC16C72AT-20/SP Datasheet PDF : 120 Pages
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PIC16C62B/72A
TABLE 1-1 PIC16C62B/PIC16C72A PINOUT DESCRIPTION
Pin Name
DIP
Pin#
SOIC
Pin#
I/O/P
Type
Buffer
Type
Description
OSC1/CLKIN
9
9
I
ST/CMOS(3) Oscillator crystal input/external clock source input.
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.
MCLR/VPP
1
1
I/P
ST
Master clear (reset) input or programming voltage input. This
pin is an active low reset to the device.
PORTA is a bi-directional I/O port.
RA0/AN0(4)
2
2
I/O
TTL
RA0 can also be analog input 0
RA1/AN1(4)
3
3
I/O
TTL
RA1 can also be analog input 1
RA2/AN2(4)
4
4
I/O
TTL
RA2 can also be analog input 2
RA3/AN3/VREF(4)
5
5
I/O
TTL
RA3 can also be analog input 3 or analog reference voltage
RA4/T0CKI
6
6
I/O
ST
RA4 can also be the clock input to the Timer0 module.
Output is open drain type.
RA5/SS/AN4(4)
7
7
I/O
TTL
RA5 can also be analog input 4 or the slave select for the
synchronous serial port.
RB0/INT
21
21
PORTB is a bi-directional I/O port. PORTB can be software
programmed for internal weak pull-up on all inputs.
I/O
TTL/ST(1)
RB0 can also be the external interrupt pin.
RB1
22
22
I/O
TTL
RB2
23
23
I/O
TTL
RB3
24
24
I/O
TTL
RB4
25
25
I/O
TTL
Interrupt on change pin.
RB5
26
26
I/O
TTL
Interrupt on change pin.
RB6
27
27
I/O
TTL/ST(2)
Interrupt on change pin. Serial programming clock.
RB7
28
28
I/O
TTL/ST(2)
Interrupt on change pin. Serial programming data.
PORTC is a bi-directional I/O port.
RC0/T1OSO/T1CKI
11
11
I/O
ST
RC0 can also be the Timer1 oscillator output or Timer1
clock input.
RC1/T1OSI
12
12
I/O
ST
RC1 can also be the Timer1 oscillator input.
RC2/CCP1
13
13
I/O
ST
RC2 can also be the Capture1 input/Compare1 output/
PWM1 output.
RC3/SCK/SCL
14
14
I/O
ST
RC3 can also be the synchronous serial clock input/output
for both SPI and I2C modes.
RC4/SDI/SDA
15
15
I/O
ST
RC4 can also be the SPI Data In (SPI mode) or
data I/O (I2C mode).
RC5/SDO
16
16
I/O
ST
RC5 can also be the SPI Data Out (SPI mode).
RC6
17
17
I/O
ST
RC7
18
18
I/O
ST
VSS
8, 19 8, 19
P
—
Ground reference for logic and I/O pins.
VDD
20
20
P
—
Positive supply for logic and I/O pins.
Legend:
Note 1:
2:
3:
4:
I = input O = output
I/O = input/output
P = power or program
— = Not used
TTL = TTL input
ST = Schmitt Trigger input
This buffer is a Schmitt Trigger input when configured as the external interrupt.
This buffer is a Schmitt Trigger input when used in serial programming mode.
This buffer is a Schmitt Trigger input when configured in RC oscillator mode and a CMOS input otherwise.
The A/D module is not available on the PIC16C62B.
DS35008B-page 6
Preliminary
© 1999 Microchip Technology Inc.
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