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MC-45D32CD641KFA-C80 Datasheet(PDF) 10 Page - NEC

Part # MC-45D32CD641KFA-C80
Description  32 M-WORD BY 64-BIT DDR SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

MC-45D32CD641KFA-C80 Datasheet(HTML) 10 Page - NEC

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Preliminary Data Sheet M14899EJ1V0DS00
10
MC-45D32CD641
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
80H
1
0
0
0
0
0
0
0
128 bytes
1
Total number of bytes of serial PD memory
08H
0
0
0
0
1
0
0
0
256 bytes
2
Fundamental memory type
07H
0
0
0
0
0
1
1
1
DDR SDRAM
3
Number of rows
0CH
0
0
0
0
1
1
0
0
12 rows
4
Number of columns
0AH
0
0
0
0
1
0
1
0
10 columns
5
Number of banks
02H
0
0
0
0
0
0
1
0
2 banks
6
Data width
40H
0
1
0
0
0
0
0
0
64 bits
7
Data width (continued)
00H
0
0
0
0
0
0
0
0
0
8
Voltage interface
04H
0
0
0
0
0
1
0
0
SSTL2
9
CL = 2.5 Cycle time
-C75
75H
0
1
1
1
0
1
0
1
7.5 ns
-C80
80H
1
0
0
0
0
0
0
0
8 ns
10
CL = 2.5 Access time
-C75
75H
0
1
1
1
0
1
0
1
0.75 ns
-C80
80H
1
0
0
0
0
0
0
0
0.8 ns
11
DIMM configuration type
00H
0
0
0
0
0
0
0
0
None
12
Refresh rate/type
80H
1
0
0
0
0
0
0
0
Normal
13
SDRAM width
08H
00
00
10
00
x8
14
Error checking SDRAM width
00H
0
0
0
0
0
0
0
0
None
15
Minimum clock delay
01H
0
0
0
0
0
0
0
1
1 clock
16
Burst length supported
0EH
0
0
0
0
1
1
1
0
2, 4, 8
17
Number of banks on each SDRAM
04H
0
0
0
0
0
1
0
0
4 banks
18
/CAS latency supported
0CH
0
0
0
0
1
1
0
0
2, 2.5
19
/CS latency supported
01H
0
0
0
0
0
0
0
1
0
20
/WE latency supported
02H
0
0
0
0
0
0
1
0
1
21
SDRAM module attributes
20H
0
0
1
0
0
0
0
0
Differential Clock
22
SDRAM device attributes : General
00H
0
0
0
0
0
0
0
0
VDD
± 0.2 V
23
CL = 2 Cycle time
-C75
A0H
1
0
1
0
0
0
0
0
10 ns
-C80
A0H
1
0
1
0
0
0
0
0
10 ns
24
CL = 2 Access time
-C75
75H
0
1
1
1
0
1
0
1
0.75 ns
-C80
80H
1
0
0
0
0
0
0
0
0.8 ns
25-26
27
tRP(MIN.)
-C75
50H
0
1
0
1
0
0
0
0
20 ns
-C80
50H
0
1
0
1
0
0
0
0
20 ns
28
tRRD(MIN.)
-C75
3CH
0
0
1
1
1
1
0
0
15 ns
-C80
3CH
0
0
1
1
1
1
0
0
15 ns
29
tRCD(MIN.)
-C75
50H
0
1
0
1
0
0
0
0
20 ns
-C80
50H
0
1
0
1
0
0
0
0
20 ns
30
tRAS(MIN.)
-C75
2DH
0
0
1
0
1
1
0
1
45 ns
-C80
32H
0
0
1
1
0
0
1
0
50 ns
31
Module bank density
20H
0
0
1
0
0
0
0
0
128M bytes


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