參數(shù)資料
型號: 16F871
廠商: Microchip Technology Inc.
英文描述: CAT 5E CROSSOVER PATCH CORD CABLE GREEN 6 FT
中文描述: 28/40-Pin 8位CMOS閃存微控制器
文件頁數(shù): 9/156頁
文件大?。?/td> 2816K
代理商: 16F871
1999 Microchip Technology Inc.
Preliminary
DS30569A-page 9
PIC16F870/871
PORTD is a bi-directional I/O port or parallel slave port when
interfacing to a microprocessor bus.
RD0/PSP0
19
21
38
I/O
ST/TTL
(3)
RD1/PSP1
20
22
39
I/O
ST/TTL
(3)
RD2/PSP2
21
23
40
I/O
ST/TTL
(3)
RD3/PSP3
22
24
41
I/O
ST/TTL
(3)
RD4/PSP4
27
30
2
I/O
ST/TTL
(3)
RD5/PSP5
28
31
3
I/O
ST/TTL
(3)
RD6/PSP6
29
32
4
I/O
ST/TTL
(3)
RD7/PSP7
30
33
5
I/O
ST/TTL
(3)
PORTE is a bi-directional I/O port.
RE0/RD/AN5
8
9
25
I/O
ST/TTL
(3)
RE0 can also be read control for the parallel slave port, or
analog input5.
RE1/WR/AN6
9
10
26
I/O
ST/TTL
(3)
RE1 can also be write control for the parallel slave port, or
analog input6.
RE2/CS/AN7
10
11
27
I/O
ST/TTL
(3)
RE2 can also be select control for the parallel slave port,
or analog input7.
V
SS
12,31
13,34
6,29
P
Ground reference for logic and I/O pins.
V
DD
11,32
12,35
7,28
P
Positive supply for logic and I/O pins.
NC
1,17,28,
40
12,13,
33,34
These pins are not internally connected. These pins should be
left unconnected.
TABLE 1-2:
PIC16F871 PINOUT DESCRIPTION (CONTINUED)
Pin Name
DIP
Pin#
PLCC
Pin#
QFP
Pin#
I/O/P
Type
Buffer
Type
Description
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 an external interrupt or LVP mode.
This buffer is a Schmitt Trigger input when used in serial programming 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.
2:
3:
4:
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