PDP-434CMX
138
1
2
3
4
1
2
3
4
C
D
F
A
B
E
No. Pin Name I/O
Pin Function
No. Pin Name I/O
Pin Function
1
VDD
−
Power supply
44
VSS
−
Ground
2
DQ0
I/O Data input/output
45
DQ24
I/O Data input/output
3
VDDQ
−
Power supply for output buffer
46
VSSQ
−
Ground for output buffer
4
DQ1
I/O Data input/output
47
DQ25
I/O Data input/output
5
DQ2
I/O Data input/output
48
DQ26
I/O Data input/output
6
VSSQ
−
Ground for output buffer
49
VDDQ
−
Power supply for output buffer
7
DQ3
I/O Data input/output
50
DQ27
I/O Data input/output
8
DQ4
I/O Data input/output
51
DQ28
I/O Data input/output
9
VDDQ
−
Power supply for output buffer
52
VSSQ
−
Ground for output buffer
10
DQ5
I/O Data input/output
53
DQ29
I/O Data input/output
11
DQ6
I/O Data input/output
54
DQ30
I/O Data input/output
12
VSSQ
−
Ground for output buffer
55
VDDQ
−
Power supply for output buffer
13
DQ7
I/O Data input/output
56
DQ31
I/O Data input/output
14
NC
−
No connection
57
NC
−
No connection
15
VDD
−
Power supply
58
VSS
−
Ground
16
DQM0
I
Data input/output mask
59
DQM3
I
Data input/output mask
17
/WE
I
Write enable
60
A3
I
Address input
18
/CAS
I
Column address strobe
61
A4
I
Address input
19
/RAS
I
Row address strobe
62
A5
I
Address input
20
/CS
I
Chip select input
63
A6
I
Address input
21
NC
−
No connection
64
A7
I
Address input
22
BA0
I
Bank address input
65
A8
I
Address input
23
BA1
I
Bank address input
66
A9
I
Address input
24
A10/AP
I
Address input
67
CKE
I
Clock enable
25
A0
I
Address input
68
CLK
I
System clock input
26
A1
I
Address input
69
NC
−
No connection
27
A2
I
Address input
70
NC
−
No connection
28
DQM2
I
Data input/output mask
71
DQM1
I
Data input/output mask
29
VDD
−
Power supply
72
VSS
−
Ground
30
NC
−
No connection
73
NC
−
No connection
31
DQ16
I/O Data input/output
74
DQ8
I/O Data input/output
32
VSSQ
−
Ground for output buffer
75
VDDQ
−
Power supply for output buffer
33
DQ17
I/O Data input/output
76
DQ9
I/O Data input/output
34
DQ18
I/O Data input/output
77
DQ10
I/O Data input/output
35
VDDQ
−
Power supply for output buffer
78
VSSQ
−
Ground for output buffer
36
DQ19
I/O Data input/output
79
DQ11
I/O Data input/output
37
DQ20
I/O Data input/output
80
DQ12
I/O Data input/output
38
VSSQ
−
Ground for output buffer
81
VDDQ
−
Power supply for output buffer
39
DQ21
I/O Data input/output
82
DQ13
I/O Data input/output
40
DQ22
I/O Data input/output
83
DQ14
I/O Data input/output
41
VDDQ
−
Power supply for output buffer
84
VSSQ
−
Ground for output buffer
42
DQ23
I/O Data input/output
85
DQ15
I/O Data input/output
43
VDD
−
Power supply
86
VSS
−
Ground
Pin Function