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W78L801 Datasheet, PDF (19/20 Pages) Winbond – 8-BIT MICROCONTROLLER
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KEYBOARD APPLICATION CIRCUIT
VCC
R3
R4
R2
D2
D3
C1
VCC
31
EA
18 X2
P00 39
P01 38
Q1
VCC
C2
VCC
X1
19 X1
10U
09
RESET
D4
PH1
R5
VCC
8.2K
14 P3.4
R1
D1
21
P20
22
P21
23
P11
24
P12
P13 25
P14 26
27
P15
W78L801
W78L801
- 19 -
Publication Release Date: February 1999
Revision A3
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