PIC16C72-10I/SO 查看數據表（PDF） - Microchip Technology
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PIC16C72-10I/SO Datasheet PDF : 288 Pages
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PIC16C7X
TABLE 3-1: PIC16C72 PINOUT DESCRIPTION
Pin Name
DIP SSOP SOIC I/O/P
Pin# Pin# Pin# Type
Buffer
Type
Description
OSC1/CLKIN
9
9
9
I ST/CMOS(3) Oscillator crystal input/external clock source input.
OSC2/CLKOUT
10 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
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
2
2
2
I/O
TTL
RA0 can also be analog input0
RA1/AN1
3
3
3
I/O
TTL
RA1 can also be analog input1
RA2/AN2
4
4
4
I/O
TTL
RA2 can also be analog input2
RA3/AN3/VREF
5
5
5
I/O
TTL
RA3 can also be analog input3 or analog reference voltage
RA4/T0CKI
6
6
6
I/O
ST
RA4 can also be the clock input to the Timer0 module.
Output is open drain type.
RA5/SS/AN4
7
7
7
I/O
TTL
RA5 can also be analog input4 or the slave select for the
synchronous serial port.
RB0/INT
PORTB is a bi-directional I/O port. PORTB can be software
programmed for internal weak pull-up on all inputs.
21 21
21
I/O
TTL/ST(1)
RB0 can also be the external interrupt pin.
RB1
22 22
22
I/O
TTL
RB2
23 23
23
I/O
TTL
RB3
24 24
24
I/O
TTL
RB4
25 25
25
I/O
TTL
Interrupt on change pin.
RB5
26 26
26
I/O
TTL
Interrupt on change pin.
RB6
27 27
27
I/O
TTL/ST(2)
Interrupt on change pin. Serial programming clock.
RB7
28 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
11
I/O
ST
RC0 can also be the Timer1 oscillator output or Timer1
clock input.
RC1/T1OSI
12 12
12
I/O
ST
RC1 can also be the Timer1 oscillator input.
RC2/CCP1
13 13
13
I/O
ST
RC2 can also be the Capture1 input/Compare1 output/
PWM1 output.
RC3/SCK/SCL
14 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
15
I/O
ST
RC4 can also be the SPI Data In (SPI mode) or
data I/O (I2C mode).
RC5/SDO
16 16
16
I/O
ST
RC5 can also be the SPI Data Out (SPI mode).
RC6
17 17
17
I/O
ST
RC7
18 18
18
I/O
ST
VSS
8, 19 8, 19 8, 19
P
—
Ground reference for logic and I/O pins.
VDD
20 20
20
P
—
Positive supply for logic and I/O pins.
Legend:
Note 1:
2:
3:
I = input O = output
I/O = input/output
P = power
— = 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.
© 1997 Microchip Technology Inc.
DS30390E-page 13
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