Ascend Semiconductor Corporation
64Mb SDRAM
Ordering Information
Part number
Max
Package
Operation Range
Power
Note
Freg.
AD484M1644VTA-7I
143MHz
125MHz
100MHz
143MHz
125MHz
100MHz
54pins,
TSOPII
Industrial Range : -40℃ ~ 85℃
Standard
AD484M1644VTA-8I
AD484M1644VTA-10I
AD484M1644VTA-7LI
AD484M1644VTA-8LI
AD484M1644VTA-10LI
54pins,
TSOPII
Industrial Range : -40℃ ~ 85℃
Industrial Range : -40℃ ~ 85℃
Industrial Range : -40℃ ~ 85℃
Industrial Range : -40℃ ~ 85℃
Industrial Range : -40℃ ~ 85℃
Standard
54pins,
TSOPII
Standard
54pins,
TSOPII
Low power
Low power
Low power
54pins,
TSOPII
54pins,
TSOPII
* Ascend Semiconductor reserves the right to change products or specification without notice.
Pin Assignment ( Top View )
VDD
1
1
2
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
VSS
DQ0
DQ15
VSSQ
DQ14
DQ13
VDDQ
DQ12
DQ11
VSSQ
DQ10
DQ9
VDDQ
DQ8
VSS
2
VDDQ
3
3
DQ1
4
4
DQ2
5
5
6
VSSQ
6
DQ3
7
7
DQ4
8
8
VDDQ
9
9
DQ5
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
10
DQ6
11
VSSQ
12
DQ7
13
VDD
14
LDQM
15
NC
/WE
UDQM
CLK
CKE
NC
16
/CAS
17
/RAS
18
/CS
19
BA0
A11
20
BA1
21
A9
A8
A10/AP
22
A0
23
A7
A1
A6
24
A2
25
A5
A3
A4
26
VDD
VSS
27
54pin TSOP-II
(400milx875mil)
(0.8mm Pin pitch)
Preliminary
4