參數(shù)資料
型號(hào)： UPD75108A
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)： 8/66頁(yè)
文件大?。?/td> 460K
代理商： UPD75108A
μ
PD75104A, 75108A
8
3.
PIN FUNCTIONS
3.1
PORT PINS
I/O
Pin Name
I/O
Shared with:
Function
At Reset
Circuit
Type*
1
P00
Input
INT4
B
P01
I/O
SCK
F
4-bit input port (PORT 0)
Input
P02
I/O
SO
E
P03
Input
SI
B
x
P10
INT0
P11
INT1
Input
4-bit input port (PORT 1)
Input*
2
B -A
P12
INT2
P13
INT3
P20*
3
PTO0
P21*
3
PTO1
I/O
4-bit I/O port (PORT 2)
Input
E
P22*
3
PCL
x
P23*
3
—
4-bit programmable I/O port (PORT 3)
P30-P33*
3
I/O
—
Input
E
Can be specified for input or output bitwise.
P40-P43*
3
I/O
—
4-bit I/O port (PORT 4)
Input*
2
E-A
o
P50-P53*
3
I/O
—
4-bit I/O port (PORT 5)
Input*
2
E-A
4-bit programmable I/O port (PORT 6)
P60-P63*
3
I/O
—
Input*
2
E-A
Can be specified for input or output bitwise.
o
P70-P73*
3
I/O
4-bit I/O port (PORT 7)
Input*
2
E-A
P80-P83*
3
I/O
—
4-bit I/O port (PORT 8)
Input*
2
E-A
o
P90-P93*
3
I/O
—
4-bit I/O port (PORT 9)
Input*
2
E-A
4-bit N-ch open-drain I/O port (PORT 12)
Built-in pull-up resistors can be specified in bit
P120-P123*
3
I/O
—
units (by mask option).
Open-drain withstanding voltage: 12 V
o
4-bit N-ch open-drain I/O port (PORT 13)
Built-in pull-up resistors can be specified in bit
P130-P133*
3
I/O
—
units (by mask option).
Open-drain withstanding voltage: 12 V
4-bit N-ch open-drain I/O port (PORT 14)
Built-in pull-up resistors can be specified in bit
P140-P143*
3
I/O
—
–
Input*
2
M
units (by mask option).
Open-drain withstanding voltage: 12 V
*1: Circles indicate Schmitt trigger input pins.
2: With pull-up resistor connected: high level
Without pull-up resistor connected: high impedance
3: Can directly drive LEDs.
8-Bit
I/O
Input*
2
M
Input*
2
M
相關(guān)PDF資料
PDF描述
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