upd4564441-a75 Elpida Memory, Inc., upd4564441-a75 Datasheet - Page 21

• Manufacturer Part Number: upd4564441-a75
• Description: 64m-bit Synchronous Dram, 133mhz 4-bank, Lvttl
• Manufacturer: Elpida Memory, Inc.

13
13
13
13
13
0
x
x
0
12
12
12
12
12
0
x
x
0
11
11
11
11
11
0
x
x
0
10
10
10
10
10
0
x
x
0
9
0
9
1
9
9
9
0
x
8
0
8
0
8
1
8
1
8
0
7
1
7
0
7
0
7
1
7
0
A0 - A13
V
6
6
6
6
6
LTMODE
LTMODE
/RAS
/CAS
CKE
CLK
/WE
/CS
V
5
5
5
5
5
4
4
4
4
V
4
WT
WT
V
3
3
3
3
3
Mode Register Set Timing
2
2
2
2
V
2
BL
BL
V
1
1
1
1
1
V
0
0
0
0
0
Burst length
Wrap type
Mode Register Set
Remark R : Reserved
JEDEC Standard Test Set (refresh counter test)
Burst Read and Single Write
(for Write Through Cache)
Use in future
Vender Specific
Mode Register Set
Latency
mode
Bits2-0
0
1
000
001
010
011
100
101
110
111
Sequential
Interleave
Bits6-4
000
001
010
011
100
101
110
111
Full page
WT = 0
R
R
R
/CAS latency
1
2
4
8
R
R
R
R
R
R
R
3
V = Valid
x = Don’t care
WT = 1
R
R
R
R
1
2
4
8