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5
- Pin Functions (PD2073A)
Pin No.
Pin Name
1
X0
test
2
3
VDD
adj
4
5
DIM
6
RESET
7,8
NC
9
REM
10,11
NC
kdt0-3
12–15
16,17
NC
18
SO
19
SI
20
NC
21–75
SEG55-1
76–84
COM0-7
85–90
KST1-6
91,92
NC
93-96
V4-1
97,98
C1,C0
99
VSS
100
X1
PD2073A
51
80
TC7SHU04FUS1
TC7SET04FUS1
NC
1
IN A
2
GND
3
5
6
I/O
Function and Operation
Crystal oscillator connection pin
I
Test input
Power supply
O
LCD brightness adjustment output
O
Dimmer output
I
Reset input
Not used
I
Remote control reception input
Not used
I
Key data input
Not used
O
System micro computer UART communication data output
I
System micro computer UART communication data input
Not used
O
LCD segment output
O
LCD common output
O
Key strobe output
Not used
LCD drive power supply
Not used
GND
Crystal oscillator connection pin
PEH023A
30
1
wp
VCC
5
OUT Y
4
AVH-P7800DVD/UC
6
7
A23
1
A22
2
A15
3
A14
4
A13
5
A0 to A23 : 24 address inputs
DQ0 to DQ14 : 15 data inputs/outputs
A12
6
DQ15/A-1 : DQ15 (data input/output,
A11
7
word mode),
A10
8
A-1 (LSB address input,
byte mode)
A9
9
ce : Chip enable input
oe : Output enable input
A8
10
we : Write enable input
A19
11
wp/ACC : Hardware Write Protect
A20
12
input;#, Acceleration input
reset : Hardware reset pin input
we
13
byte : Selects 8-bit or 16-bit mode
reset
14
RY/by : Ready/busy output
VCC : 3.0 volt-only single power supply
A21
15
VIO : Output buffer power
/ACC
16
VSS : Device ground
NC : Pin not connected internally
by
RY/
17
A18
18
A17
19
A7
20
A6
21
A5
22
A4
23
A3
24
A2
25
A1
26
NC
27
NC
28
7
8
A
B
C
56
NC
55
NC
54
A16
byte
53
52
VSS
51
DQ15/A-1
50
DQ7
49
DQ14
48
DQ6
D
47
DQ13
46
DQ5
45
DQ12
44
DQ4
43
VCC
42
DQ11
41
DQ3
40
DQ10
39
DQ2
E
38
DQ9
37
DQ1
36
DQ8
35
DQ0
oe
34
33
VSS
ce
32
31
A0
30
NC
F
29
VIO
259
8
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