參數(shù)資料
型號: μPD75P3018A
廠商: NEC Corp.
英文描述: 4 Bit Single Chip Microcontrollers(4位單片微控制器)
中文描述: 4位單片微控制器(4位單片微控制器)
文件頁數(shù): 7/60頁
文件大小: 337K
代理商: ΜPD75P3018A
μPD75P3018A
7
3.1 Port Pins (2/2)
Pin name
I/O
Shared by
Function
8-bit
I/O
Status
after reset
I/O circuit
type
Note 1
P60
I/O
KR0
This is a programmable 4-bit I/O port (PORT6).
Input and output in single-bit units can be specified.
When set for 4-bit units, an internal pull-up resistor
connection can be specified by software.
Input
<F>-A
P61
KR1
P62
KR2
P63
KR3
P70
I/O
KR4
This is a 4-bit I/O port (PORT7).
When set for 4-bit units, an internal pull-up resistor
connection can be specified by software.
Input
<F>-A
P71
KR5
P72
KR6
P73
KR7
BP0
Output
S24
1-bit output port (BIT PORT). These pins are also
used as segment output pin.
Note 2
H-A
BP1
S25
BP2
S26
BP3
S27
BP4
Output
S28
BP5
S29
BP6
S30
BP7
S31
Notes 1. Circuit types enclosed in brackets indicate Schmitt trigger input.
2. V
LC1
is selected as the input source for BP0 to BP7. The output level varies depending on the external circuit
for BP0 to BP7 and V
LC1
.
Example: As shown below, BP0 to BP7 are mutually connected via the
m
PD75P3018A, so the output levels of BP0 to BP7
are determined by the sizes of R
1
, R
2
, and R
3
.
R
1
V
LC1
ON
ON
BP0
BP1
R
3
R
2
V
DD
μ
PD75P3018A
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