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K25C81 Datasheet(PDF) 2 Page - Semtech Corporation

Part # K25C81
Description  Versatile PC/XC/AT/PS/2 Compatible Keyboard Encoder
PDF  12 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

K25C81 Datasheet(HTML) 2 Page - Semtech Corporation

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FUNCTIONAL DIAGRAM
ORDERING CODE
Copyright Semtech, 1997-2001
DOC5-C81-DS-105
www.semtech.com
2
Package options
40-pin, Plastic DIP
44-pin, Plastic PLCC
44-pin, Plastic QFP
Pitch In mm’s
2.54 mm
1.27 mm
0.8 mm
TA = -40°C to +85°C
K25C81-XX-P
K25C81-XX-FN
K25C81-XX-FB
Data Buffer
Interrupt Control
PC
Communication
Channel
8042 Emulation
(Standard Keyboard)
Communication Channel
EKC1
KC
KD
EKC
EKD
Keyboard Encoder
Mode Control
Row Data Inputs
Column Select Ouputs
R0-R7
RP
C0-C17
8
18



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