16F84 MICROCHIP [Microchip Technology], 16F84 Datasheet - Page 9

• Manufacturer Part Number: 16F84
• Description: 18-pin Flash/EEPROM 8-Bit Microcontrollers
• Manufacturer: MICROCHIP [Microchip Technology]

TABLE 3-1
RA3
RA4/T0CKI
RB0/INT
RB3
RB4
RB5
RB6
OSC1/CLKIN
OSC2/CLKOUT
MCLR
RA0
RA1
RA2
RB1
RB2
RB7
V
V
Legend: I= input
Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt.
SS
DD
1998 Microchip Technology Inc.
Pin Name
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.
PIC16F8X PINOUT DESCRIPTION
O = output
— = Not used
DIP
No.
16
15
17
18
10
11
12
13
14
4
1
2
3
6
7
8
9
5
SOIC
No.
16
15
17
18
10
11
12
13
14
4
1
2
3
6
7
8
9
5
I/O/P
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/P
O
P
P
I
I/O = Input/Output
TTL = TTL input
ST/CMOS
TTL/ST
TTL/ST
TTL/ST
Buffer
Type
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
ST
ST
—
—
—
(1)
(2)
(2)
(3)
Description
Oscillator crystal input/external clock source input.
Oscillator crystal output. Connects to crystal or resonator in crystal
oscillator mode. In RC mode, OSC2 pin outputs CLKOUT which
has 1/4 the frequency of OSC1, and denotes the instruction cycle
rate.
Master clear (reset) input/programming voltage input. This pin is an
active low reset to the device.
PORTA is a bi-directional I/O port.
PORTB is a bi-directional I/O port. PORTB can be software pro-
grammed for internal weak pull-up on all inputs.
Ground reference for logic and I/O pins.
Positive supply for logic and I/O pins.
Can also be selected to be the clock input to the TMR0
timer/counter. Output is open drain type.
RB0/INT can also be selected as an external interrupt pin.
Interrupt on change pin.
Interrupt on change pin.
Interrupt on change pin. Serial programming clock.
Interrupt on change pin. Serial programming data.
P = power
ST = Schmitt Trigger input
PIC16F8X
DS30430C-page 9