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KEH-P490,P4900,P4950
- Pin Functions (PD6278C)
Pin No.
Pin Name
1-5
SEG4-0
6-9
COM3-0
10
V3
11-14
KS4-1
15,16
KD1,2
17
REM
18
RXD
rst
19
20
TXD
21
MODA
22
X0
23
X1
24
VSS
25,26
KD3,4
27,28
KS6,5
29-55
SEG39-13
56
VCC
57-64
SEG12-5
*PD6278C
64
1
16
17
46
I/O
Function and Operation
O
LCD segment output
O
LCD common output
LCD drive power supply
O
Key strobe output
I
Key data input (analogue input)
I
Remote control reception
I
System micro computer UART communication data input
I
System reset
O
System micro computer UART communication data output
GND
Crystal oscillator connection pin
Crystal oscillator connection pin
GND
I
Key data input
O
Key strobe output
O
LLCD segment output
Power supply
O
LCD segment output
49
48
33
32
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