參數(shù)資料
型號(hào)： PIC16CR7X
廠商： Microchip Technology Inc.
英文描述： 28/40-Pin, 8-Bit CMOS ROM Microcontrollers
中文描述： 28/40-Pin，8位微控制器的CMOS光盤
文件頁數(shù)： 12/172頁
文件大小： 1506K
代理商： PIC16CR7X
PIC16CR7X
DS21993C-page 10
2007 Microchip Technology Inc.
TABLE 1-3:
PIC16CR74 AND PIC16CR77 PINOUT DESCRIPTION
Pin Name
PDIP
Pin#
PLCC
Pin#
QFP
Pin#
I/O/P
Type
Buffer
Type
Description
OSC1/CLKIN
OSC1
CLKIN
13
14
30
I
I
ST/CMOS
(4)
Oscillator crystal or external clock input.
Oscillator crystal input or external clock source input.
ST buffer when configured in RC mode. Otherwise
CMOS.
External clock source input. Always associated with pin
function OSC1 (see OSC1/CLKIN, OSC2/CLKOUT
pins).
Oscillator crystal or clock output.
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. This pin is an active low
Reset to the device.
PORTA is a bidirectional I/O port.
OSC2/CLKOUT
OSC2
CLKOUT
14
15
31
O
O
—
MCLR
1
2
18
I
ST
RA0/AN0
RA0
AN0
RA1/AN1
RA1
AN1
RA2/AN2
RA2
AN2
RA3/AN3/V
REF
RA3
AN3
V
REF
RA4/T0CKI
RA4
T0CKI
RA5/AN4/SS
RA5
AN4
SS
Legend:
2
3
19
I/O
I
TTL
Digital I/O.
Analog input 0.
3
4
20
I/O
I
TTL
Digital I/O.
Analog input 1.
4
5
21
I/O
I
TTL
Digital I/O.
Analog input 2.
5
6
22
I/O
I
I
TTL
Digital I/O.
Analog input 3.
A/D reference voltage input.
6
7
23
I/O
I
ST
Digital I/O – Open drain when configured as output.
Timer0 external clock input.
7
8
24
I/O
I
I
I/O = input/output
ST = Schmitt Trigger input
TTL
Digital I/O.
Analog input 4.
SPI slave select input.
P = power
I = input
— = Not used
This buffer is a Schmitt Trigger input when configured as an external interrupt.
This buffer is a Schmitt Trigger input when used in Serial Verify mode.
This buffer is a Schmitt Trigger input when configured as general purpose I/O and a TTL input when used in the Parallel
Slave Port mode (for interfacing to a microprocessor bus).
This buffer is a Schmitt Trigger input when configured in RC Oscillator mode and a CMOS input otherwise.
O = output
TTL = TTL input
Note
1:
2:
3:
4:
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