Pioneer KEH-P2800 - Radio / Cassette Player Service Manual page 36

KEH-P2800,P3850
*PE5015A
80
1
20
21
- Pin Functions (PD6293A)
Pin No. Pin Name
1–5 SEG4-0
6–8 COM1-3
9 COM0
10 LCDB
11–14 KS3-0
15,16 KDT0,1
17 REM
18 DPDT
NC
19
20 KYDT
21 MODA
22 X0
23 X1
24 VSS
25,26 KDT2,3
27,28 KST5,4
29–55 SEG39-13
56 VCC
57–64 SEG12-5
*PD6293A
32
17
36
61
60
41
40
I/O Function and Operation
O LCD segment output 4-0
O Common driver output 1-3
O Common driver output 0
LCD bias power supply
O Key strobe output 3-0
I Key data input 0,1
I Remote control reception
I Display data input
Not used
O Key data output
GND
Crystal oscillator connection pin
Crystal oscillator connection pin
GND
I Key data input 2,3
O Key strobe output 5,4
O LCD segment output 39-13
5V
O LCD segment output 12-5
49
64
Format Meaning
C C MOS
IC's marked by* are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.