參數(shù)資料
型號(hào)： UPD75512A
廠商： NEC Corp.
英文描述： 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述： 4位單片機(jī)
文件頁數(shù)： 9/64頁
文件大?。?/td> 494K
代理商： UPD75512A
μ
PD75512(A)
9
3.1 PORT PINS (2/2)
Input/
Output
Circuit
Type*
Pin
Name
Input/
Output
Shared
Pin
Function
8-bit
I/O
When Reset
P70
KR4
4-bit input/output port (PORT7).
Built-in pull-up resistor can be
specified in 4-bit units by software.
P71
Input/
output
KR5
O
Input
F -A
P72
KR6
P73
KR7
P80
PPO
E
P81
SCK1
F
Input
4-bit input port (PORT8).
x
Input
P82
SO1
E
P83
SI1
B
Low level
(when pull-
down resistor
is provided)
or high
impedance
4-bit input/output port (PORT9).
Built-in pull-up resistors can be
specified in bit units by mask
option.
P90 to
P93
Input/
output
—
x
V
P100 to
P103
Input/
output
—
4-bit input/output port (PORT10).
Input
E
x
P110 to
P113
Input/
output
—
4-bit input/output port (PORT11).
Input
E
N-ch open-drain 4-bit input/output
port (PORT12).
A pull-up resistor can be provided
in bit units (mask option).
10V withstanding voltage in the
open-drain mode.
High level
(when pull-up
resistor is
provided) or
high impedance
P120 to
P123
Input/
output
—
M
x
N-ch open-drain 4-bit input/output
port (PORT13).
A pull-up resistor can be provided
in bit units (mask option).
10V withstanding voltage in the
open-drain mode.
High level
(when pull-up
resistor is
provided) or
high impedance
P130 to
P133
Input/
output
—
x
M
N-ch open-drain 4-bit input/output
port (PORT14).
A pull-up resistor can be provided
in bit units (mask option).
10V withstanding voltage in the
open-drain mode.
High level
(when pull-up
resistor is
provided) or
high impedance
P140 to
P143
Input/
output
—
x
M
P150 to
P153
Input
AN4 to AN7
4-bit input port (PORT15).
x
Input
Y-A
*: The number enclosed with a circle indicates Schmitt trigger input.
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