PIC16F870T-I/P View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC16F870T-I/P Datasheet PDF : 156 Pages
| |||
PIC16F870/871
TABLE 1-2: PIC16F871 PINOUT DESCRIPTION
Pin Name
DIP PLCC
Pin# Pin#
QFP I/O/P
Pin# Type
Buffer
Type
Description
OSC1/CLKIN
13
14
30
I
ST/CMOS(4) Oscillator crystal input/external clock source input.
OSC2/CLKOUT
14
15
31
O
—
Oscillator crystal output. Connects to crystal or resonator in
crystal oscillator mode. In RC mode, OSC2 pin outputs CLK-
OUT which has 1/4 the frequency of OSC1, and denotes the
instruction cycle rate.
MCLR/VPP/THV
1
2
18
I/P
ST
Master clear (reset) input or programming voltage input or high
voltage test mode control. This pin is an active low reset to the
device.
PORTA is a bi-directional I/O port.
RA0/AN0
2
3
19
I/O
TTL
RA0 can also be analog input0
RA1/AN1
3
4
20
I/O
TTL
RA1 can also be analog input1
RA2/AN2/VREF-
4
5
21
I/O
TTL
RA2 can also be analog input2 or negative analog
reference voltage
RA3/AN3/VREF+
5
6
22
I/O
TTL
RA3 can also be analog input3 or positive analog
reference voltage
RA4/T0CKI
6
7
23
I/O
ST
RA4 can also be the clock input to the Timer0 timer/
counter. Output is open drain type.
RA5/AN4
7
8
24
I/O
TTL
RA5 can also be analog input4
PORTB is a bi-directional I/O port. PORTB can be software
programmed for internal weak pull-up on all inputs.
RB0/INT
33
36
8
I/O
TTL/ST(1)
RB0 can also be the external interrupt pin.
RB1
34
37
9
I/O
TTL
RB2
35
38
10
I/O
TTL
RB3/PGM
36
39
11
I/O
TTL/ST(1)
RB3 can also be the low voltage programming input
RB4
37
41
14
I/O
TTL
Interrupt on change pin.
RB5
38
42
15
I/O
TTL
Interrupt on change pin.
RB6/PGC
39
43
16
I/O
TTL/ST(2)
Interrupt on change pin or In-Circuit Debugger pin. Serial
programming clock.
RB7/PGD
40
44
17
I/O
TTL/ST(2)
Interrupt on change pin or In-Circuit Debugger pin. Serial
programming data.
PORTC is a bi-directional I/O port.
RC0/T1OSO/T1CKI 15
16
32
I/O
ST
RC0 can also be the Timer1 oscillator output or a Timer1
clock input.
RC1/T1OSI
16
18
35
I/O
ST
RC1 can also be the Timer1 oscillator input
RC2/CCP1
17
19
36
I/O
ST
RC2 can also be the Capture1 input/Compare1 output/
PWM1 output.
RC3
18
20
37
I/O
ST
RC4
23
25
42
I/O
ST
RC5
24
26
43
I/O
ST
RC6/TX/CK
25
27
44
I/O
ST
RC6 can also be the USART Asynchronous Transmit or
Synchronous Clock.
RC7/RX/DT
26
29
1
I/O
ST
RC7 can also be the USART Asynchronous Receive or
Synchronous Data.
Legend:
Note 1:
2:
3:
4:
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 an external interrupt or LVP mode.
This buffer is a Schmitt Trigger input when used in serial programming mode.
This buffer is a Schmitt Trigger input when configured as general purpose I/O and a TTL input when used in the Parallel Slave
Port mode (for interfacing to a microprocessor bus).
This buffer is a Schmitt Trigger input when configured in RC oscillator mode and a CMOS input otherwise.
DS30569A-page 8
Preliminary
© 1999 Microchip Technology Inc.
Share Link: 