參數(shù)資料
型號(hào)： UPD75312
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)： 10/62頁(yè)
文件大小： 577K
代理商： UPD75312
μ
PD75312(A), 75316(A)
3
P60
P61
P62
P63
P70
P71
P72
P73
BP0
BP1
BP2
BP3
BP4
BP5
BP6
BP7
KR0
KR1
KR2
KR3
KR4
KR5
KR6
KR7
S24
S25
S26
S27
S28
S29
S30
S31
G
G
Also Served
As
3.1
PORT PINS (2/2)
Input/
Output
Circuit
TYPE*
1
Programmable 4-bit input/output port
(PORT6)
This port can be specified for input/
output in bit units.
Internal pull-up resistors can be
specified in 4-bit units by software.
Input
F -A
4-bit input/output port (PORT7)
Internal pull-up resistors can be
specified in 4-bit units by software.
Input
F -A
Pin Name Input/Output
Function
8-Bit I/O
When Reset
1-bit output port (BIT PORT)
Shared with a segment output pin.
×
*2
G-C
Input/
Output
Input/
Output
Output
Output
*1: Circles indicate Schmitt trigger inputs.
2: For BP0-7, V
LC1
indicated below are selected as the input source. However, the output level is
changed depending on BP0-7 and the V
LC1
external circuits.
Example:Since BP0-7 are connected to each other within the
μ
PD75316(A) as shown in the diagram
below, the output level of BP0-7 depends on the sizes of R
1
, R
2
and R
3
.
PD75316(A)
μ
ON
ON
BP0
BP1
V
DD
R
2
R
3
V
LC1
R
1
10
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