參數(shù)資料
型號(hào)： 35007B
廠商： Microchip Technology Inc.
英文描述： 18-pin Enhanced FLASH/EEPROM 8-bit Microcontroller
中文描述： 18針/ EEPROM的8位微控制器的閃存
文件頁(yè)數(shù)： 6/88頁(yè)
文件大小： 1495K
代理商： 35007B
PIC16F84A
DS35007B-page 4
2001 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
OSC2/CLKOUT
16
15
16
15
18
19
I
ST/CMOS
(3)
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.
O
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
RA1
RA2
RA3
RA4/T0CKI
17
18
1
2
3
17
18
1
2
3
19
20
1
2
3
I/O
I/O
I/O
I/O
I/O
TTL
TTL
TTL
TTL
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 can also be selected as an external
interrupt pin.
RB0/INT
6
6
7
I/O
TTL/ST
(1)
RB1
RB2
RB3
RB4
RB5
RB6
7
8
9
7
8
9
8
9
10
11
12
13
I/O
I/O
I/O
I/O
I/O
I/O
TTL
TTL
TTL
TTL
TTL
10
11
12
10
11
12
Interrupt-on-change pin.
Interrupt-on-change pin.
Interrupt-on-change pin.
Serial programming clock.
Interrupt-on-change pin.
Serial programming data.
Ground reference for logic and I/O pins.
Positive supply for logic and I/O pins.
P = Power
ST = Schmitt Trigger input
TTL/ST
(2)
RB7
13
13
14
I/O
TTL/ST
(2)
V
SS
V
DD
Legend: I= input
5
5
5,6
15,16
P
P
—
—
14
O = Output
— = Not used
14
I/O = Input/Output
TTL = TTL 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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