Kenwood KDC-MP638U Service Manual page 15

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name I/O
104 BVDD
105~120 D0-D15
121~126 A16-A21
127,128 NC
129~132 KR4-KR1
133 NC
134~138 KS5-KS1
139~144 NC
Application
I Data input
O Address output
O
I Key return input
O
I/O Key scan output
O
KDC-MP638U/W7041U
/W7141UY/X692/X7009U
Processing / Operation / Description
Output LOW fi xed
Output LOW fi xed
Output L, Hi-Z:Switching
Output LOW fi xed
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