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UPD75402ACT Datasheet(PDF) 4 Page - NEC

Part # UPD75402ACT
Description  4 BIT SINGLE-CHIP MICROCOMPUTER
PDF  48 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD75402ACT Datasheet(HTML) 4 Page - NEC

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4
µPD75402A(A)
1.
PIN CONFIGURATION (TOP VIEW)
28-pin plastic DIP (600 mil), 28-pin plastic shrink DIP (400 mil)
Note NC
1
28
VDD
RESET
2
27
X1
P00
3
26
X2
P01/SCK
4
25
P12 /INT2
P02/SO/SB0
5
24
P10/INT0
P03/SI
6
23
P23
P50
7
22
P22 /PCL
P51
8
21
P21
P52
9
20
P20
P53
10
19
P63
P30
11
18
P62
P31
12
17
P61
P32
13
16
P60
VSS
14
15
P33
P00 - P03
: Port 0
SCK
: Serial clock I/O
P10 and P12: Port 1
SO/SB0
: Serial output/input-output
P20 - P23
: Port 2
SI
: Serial input
P30 - P33
: Port 3
PCL
: Clock output
P50 - P53
: Port 5
INT0
: External vectored interrupt input
P60 - P63
: Port 6
INT2
: External test input
X1 and X2 : Oscillating pins
RESET
: Reset input
VDD
: Power supply
VSS
: Ground
NC
: No connection
Note When the
µPD75402A(A) shares the printed circuit board with the µPD75P402, connect the NC pin
directly to the VSS pin.



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