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PIC16F84A-04E/P 数据手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
微控制器
封装:
PDIP-18
描述:
8位微控制器 -MCU 1.75KB 68 RAM 13 I/O 4MHz Ext Temp PDIP18
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PIC16F84A-04E/P数据手册
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PIC16F84A
DS35007C-page 4 2001-2013 Microchip Technology Inc.
TABLE 1-1: PIC16F84A PINOUT DESCRIPTION
Pin Name
PDIP
No.
SOIC
No.
SSOP
No.
I/O/P
Type
Buffer
Type
Description
OSC1/CLKIN 16 16 18 I ST/CMOS
(3)
Oscillator crystal input/external clock source input.
OSC2/CLKOUT 15 15 19 O — 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.
MCLR
4 4 4 I/P ST 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.
RA0 17 17 19 I/O TTL
RA1 18 18 20 I/O TTL
RA2 1 1 1 I/O TTL
RA3 2 2 2 I/O TTL
RA4/T0CKI 3 3 3 I/O ST Can also be selected to be the clock input to the
TMR0 timer/counter. Output is open drain type.
PORTB is a bi-directional I/O port. PORTB can be
software programmed for internal weak pull-up on
all inputs.
RB0/INT 6 6 7 I/O TTL/ST
(1)
RB0/INT can also be selected as an external
interrupt pin.
RB1 7 7 8 I/O TTL
RB2 8 8 9 I/O TTL
RB3 9 9 10 I/O TTL
RB4 10 10 11 I/O TTL Interrupt-on-change pin.
RB5 11 11 12 I/O TTL Interrupt-on-change pin.
RB6 12 12 13 I/O TTL/ST
(2)
Interrupt-on-change pin.
Serial programming clock.
RB7 13 13 14 I/O TTL/ST
(2)
Interrupt-on-change pin.
Serial programming data.
V
SS 5 5 5,6 P — Ground reference for logic and I/O pins.
V
DD 14 14 15,16 P — Positive supply for logic and I/O pins.
Legend: I= input O = Output I/O = Input/Output P = Power
— = Not used TTL = TTL input ST = Schmitt Trigger input
Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt.
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.
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