參數(shù)資料
型號(hào)： MC-454CB64S
廠商： NEC Corp.
英文描述： 4M-Word By 64-BIT Dynamic RAM Module(動(dòng)態(tài)RAM模塊)
中文描述： 分詞，64位動(dòng)態(tài)RAM模塊（動(dòng)態(tài)內(nèi)存模塊）
文件頁(yè)數(shù)： 10/16頁(yè)
文件大?。?/td> 138K
代理商： MC-454CB64S
10
MC-454CB64S
Serial PD
(1/2)
Byte No.
Function Described
Hex
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Notes
0
Defines the number of bytes written into
serial PD memory
Total number of bytes of serial PD memory
Fundamental memory type
Number of rows
Number of columns
Number of banks
Data width
Data width (continued)
Voltage interface
CL = 3 Cycle time
80H
1
0
0
0
0
0
0
0
128 bytes
1
2
3
4
5
6
7
8
9
08H
04H
0CH
08H
01H
40H
00H
01H
80H
A0H
A0H
60H
60H
70H
00H
80H
10H
00H
01H
8FH
04H
06H
01H
01H
00H
0EH
A0H
D0H
F0H
60H
70H
80H
00H
14H
14H
1EH
10H
14H
14H
14H
14H
1EH
30H
32H
3CH
08H
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
1
0
0
0
1
0
0
0
0
0
0
1
1
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
1
1
0
1
0
0
1
1
1
1
1
1
1
1
1
1
1
1
0
1
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0
1
1
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
1
0
0
0
0
0
0
0
1
1
1
0
1
1
1
1
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
1
0
0
0
0
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
1
1
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
256 bytes
SDRAM
12 rows
8 columns
1 bank
64 bits
0
LVTTL
8 ns
10 ns
10 ns
6 ns
6 ns
7 ns
None
Normal
×
16
None
1 clock
1, 2, 4, 8, F
4 banks
2, 3
0
0
-A80
-A10
-A10B
-A80
-A10
-A10B
10
CL =3 Access time
11
12
13
14
15
16
17
18
19
20
21
22
23
DIMM configuration type
Refresh rate/type
SDRAM width
Error checking SDRAM width
Minimum clock delay
Burst length supported
Number of banks on each SDRAM
/CAS latency supported
/CS latency supported
/WE latency supported
SDRAM module attributes
SDRAM device attributes : General
CL = 2 Cycle time
-A80
-A10
-A10B
-A80
-A10
-A10B
10 ns
13 ns
15 ns
6 ns
7 ns
8 ns
24
CL = 2 Access time
25-26
27
t
RP(MIN.)
-A80
-A10
-A10B
-A80
-A10
-A10B
-A80
-A10
-A10B
-A80
-A10
-A10B
20 ns
20 ns
30 ns
16 ns
20 ns
20 ns
20 ns
20 ns
30 ns
48 ns
50 ns
60 ns
32M bytes
28
t
RRD(MIN.)
29
t
RCD(MIN.)
30
t
RAS(MIN.)
31
Module bank density
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