參數(shù)資料
型號(hào)： UPD75402AC
廠商： NEC Corp.
英文描述： 4 BIT SINGLE-CHIP MICROCOMPUTER
中文描述： 4位單片機(jī)
文件頁(yè)數(shù)： 7/48頁(yè)
文件大?。?/td> 515K
代理商： UPD75402AC
7
μ
PD75402A(A)
3. PIN FUNCTIONS
3.1 PORT PINS
Remarks 1.
The
μ
PD75402A(A) cannot perform 8-bit I/O with two ports as a pair.
2.
See Chapter 8 for each pin status during resetting.
Pin
P00
P01
P02
P03
P10
P12
P20
P21
P22
P23
P30 - P33
P50 - P53
P60 - P63
I/O
Input
I/O
I/O
Input
Input
I/O
I/O
I/O
I/O
Dual-
function pin
–
SCK
SO/SB0
SI
INT0
INT2
–
–
PCL
–
–
–
–
Function
4-bit input port (port 0)
P01 to P03 allow the connection of built-in pull-up resistors to be
specified in units of three bits by software.
2-bit input port (port 1)
P10 connects with the built-in noise eliminator using a sampling clock.
P12 connects with the built-in noise eliminator using an analog delay.
P12 allows the connection of built-in pull-up resistor to be specified by
software.
4-bit I/O port (port 2)
Allow I/O specification in units of four bits.
Allow the connection of built-in pull-up resistors to be specified in
units of four bits by software.
Programmable 4-bit I/O port (port 3)
Allow I/O specification bit by bit.
Allow the connection of built-in pull-up resistors to be specified in
units of four bits by software.
Can directly drive LED.
4-bit N-ch open-drain I/O port (port 5)
Allow I/O specification in units of four bits.
Allow the connection of built-in pull-up resistors to be specified bit by
bit by mask option.
Can directly drive LED.
4-bit I/O port (port 6)
Allow I/O specification in units of four bits.
Allow the connection of built-in pull-up resistors to be specified in
units of four bits by software.
Can directly drive LED.
相關(guān)PDF資料
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