參數(shù)資料
型號: 16F84
廠商: Microchip Technology Inc.
英文描述: CAT 5E CROSSOVER, BLUE 15 FT PATCH CABLE
中文描述: 18引腳閃存/ EEPROM的8位微控制器
文件頁數(shù): 9/124頁
文件大?。?/td> 1322K
代理商: 16F84
PIC16F8X
1998 Microchip Technology Inc.
DS30430C-page 9
TABLE 3-1
PIC16F8X PINOUT DESCRIPTION
Pin Name
DIP
No.
SOIC
No.
I/O/P
Type
Buffer
Type
Description
OSC1/CLKIN
16
16
I
ST/CMOS
(3)
Oscillator crystal input/external clock source input.
OSC2/CLKOUT
15
15
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
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
I/O
TTL
RA1
18
18
I/O
TTL
RA2
1
1
I/O
TTL
RA3
2
2
I/O
TTL
RA4/T0CKI
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 pro-
grammed for internal weak pull-up on all inputs.
RB0/INT
6
6
I/O
TTL/ST
(
1)
RB0/INT can also be selected as an external interrupt pin.
RB1
7
7
I/O
TTL
RB2
8
8
I/O
TTL
RB3
9
9
I/O
TTL
RB4
10
10
I/O
TTL
Interrupt on change pin.
RB5
11
11
I/O
TTL
Interrupt on change pin.
RB6
12
12
I/O
TTL/ST
(2)
TTL/ST
(2)
Interrupt on change pin. Serial programming clock.
RB7
13
13
I/O
Interrupt on change pin. Serial programming data.
V
SS
5
5
P
Ground reference for logic and I/O pins.
V
DD
14
14
P
Positive supply for logic and I/O pins.
Legend: I= input
O = output
— = Not used
I/O = Input/Output
TTL = TTL input
P = power
ST = Schmitt Trigger input
Note 1:
This buffer is a Schmitt Trigger input when configured as the external interrupt.
This buffer is a Schmitt Trigger input when used in serial programming mode.
This buffer is a Schmitt Trigger input when configured in RC oscillator mode and a CMOS input otherwise.
2:
3:
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