HM5225165B/HM5225805B/HM5225405B-75/A6/B6
Pin Arrangement (HM5225405B)
54-pin TSOP
1
2
VCC
NC
54 VSS
53 NC
3
4
V
CCQ
NC
52
VSSQ
51 NC
5
DQ0
50 DQ3
6
VSSQ
49
VCCQ
7
8
NC
NC
48 NC
47 NC
9
VCCQ
46
VSSQ
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
NC
DQ1
SSQ
NC
45 NC
44 DQ2
V
43
VCCQ
42 NC
41 VSS
40 NC
39 DQM
38 CLK
37 CKE
36 A12
35 A11
34 A9
33 A8
32 A7
31 A6
30 A5
29 A4
28 VSS
VCC
NC
WE
CAS
RAS
CS
BA0
BA1
A10
A0
A1
A2
A3
VCC
(Top view)
Pin Description
Pin name
Function
Pin name
Function
A0 to A12,
BA0, BA1
Address input
WE
Write enable
Row address
A0 to A12
DQM
CLK
Input/output mask
Clock input
Column address
A0 to A9, A11
Bank select address BA0/BA1 (BS) CKE
Clock enable
DQ0 to DQ3
CS
Data-input/output
VCC
Power for internal circuit
Ground for internal circuit
Power for DQ circuit
Ground for DQ circuit
No connection
Chip select
VSS
RAS
Row address strobe command
Column address strobe command
VCCQ
VSSQ
NC
CAS
Data Sheet E0082H10
5