PIC16F7X Datasheet, PDF (14/174 Pages) Microchip Technology – 28/40-Pin 8-Bit CMOS FLASH Microcontrollers

PIC16F7X
TABLE 1-3: PIC16F74 AND PIC16F77 PINOUT DESCRIPTION (CONTINUED)
Pin Name
DIP PLCC QFP I/O/P
Pin# Pin# Pin# Type
Buffer
Type
Description
RD0/PSP0
RD0
PSP0
RD1/PSP1
RD1
PSP1
RD2/PSP2
RD2
PSP2
RD3/PSP3
RD3
PSP3
RD4/PSP4
RD4
PSP4
RD5/PSP5
RD5
PSP5
RD6/PSP6
RD6
PSP6
RD7/PSP7
RD7
PSP7
PORTD is a bi-directional I/O port or parallel slave port
when interfacing to a microprocessor bus.
19
21
38
ST/TTL⁽³⁾
I/O
Digital I/O.
I/O
Parallel Slave Port data.
20
22
39
I
ST/TTL⁽³⁾
I/O
Digital I/O.
I/O
Parallel Slave Port data.
21
23
40
I
ST/TTL⁽³⁾
I/O
Digital I/O.
I/O
Parallel Slave Port data.
22
24
41
ST/TTL⁽³⁾
I/O
Digital I/O.
I/O
Parallel Slave Port data.
27
30
2
ST/TTL⁽³⁾
I/O
Digital I/O.
I/O
Parallel Slave Port data.
28
31
3
ST/TTL⁽³⁾
I/O
Digital I/O.
I/O
Parallel Slave Port data.
29
32
4
ST/TTL⁽³⁾
I/O
Digital I/O.
I/O
Parallel Slave Port data.
30
33
5
ST/TTL⁽³⁾
I/O
Digital I/O.
I/O
Parallel Slave Port data.
RE0/RD/AN5
RE0
RD
AN5
RE1/WR/AN6
RE1
WR
AN6
RE2/CS/AN7
RE2
CS
AN7
PORTE is a bi-directional I/O port.
8
9
25
ST/TTL⁽³⁾
I/O
Digital I/O.
I
Read control for parallel slave port .
I
Analog input 5.
9
10
26
ST/TTL⁽³⁾
I/O
Digital I/O.
I
Write control for parallel slave port .
I
Analog input 6.
10
11
27
ST/TTL⁽³⁾
I/O
Digital I/O.
I
Chip select control for parallel slave port .
I
Analog input 7.
VSS
12,31 13,34 6,29
P
—
Ground reference for logic and I/O pins.
VDD
11,32 12,35 7,28
P
—
Positive supply for logic and I/O pins.
NC
— 1,17,2 12,13,
—
These pins are not internally connected. These pins should
8, 40 33, 34
be left unconnected.
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.
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.
DS30325B-page 12
 2002 Microchip Technology Inc.