参数资料
型号: PIC16LC556-04/SS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 4 MHz, RISC MICROCONTROLLER, PDSO20
封装: 0.209 INCH, PLASTIC, SSOP-20
文件页数: 94/104页
文件大小: 697K
代理商: PIC16LC556-04/SS
1996 Microchip Technology Inc.
Preliminary
DS40143A-page 9
PIC16C55X
TABLE 3-1:
PIC16C55X PINOUT DESCRIPTION
Name
DIP
SOIC
Pin #
SSOP
Pin #
I/O/P
Type
Buffer
Type
Description
OSC1/CLKIN
16
18
I
ST/CMOS Oscillator crystal input/external clock source input.
OSC2/CLKOUT
15
17
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/VPP
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
19
I/O
ST
RA1
18
20
I/O
ST
RA2
1
I/O
ST
RA3
2
I/O
ST
RA4/T0CKI
3
I/O
ST
Can be selected to be the clock input to the Timer0
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
7
I/O
TTL/ST
(1)
RB0/INT can also be selected as an external
interrupt pin.
RB1
7
8
I/O
TTL
RB2
8
9
I/O
TTL
RB3
9
10
I/O
TTL
RB4
10
11
I/O
TTL
Interrupt on change pin.
RB5
11
12
I/O
TTL
Interrupt on change pin.
RB6
12
13
I/O
TTL/ST
(2)
Interrupt on change pin. Serial programming clock.
RB7
13
14
I/O
TTL/ST
(2)
Interrupt on change pin. Serial programming data.
VSS
5
5,6
P
Ground reference for logic and I/O pins.
VDD
14
15,16
P
Positive supply for logic and I/O pins.
Legend:
O = output
I/O = input/output
P = power
— = Not used
I = Input
ST = Schmitt Trigger input
TTL = TTL input
Note 1: This buffer is a Schmitt Trigger input when congured as the external interrupt.
Note 2: This buffer is a Schmitt Trigger input when used in serial programming mode.
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