MC-4532DA727 Datasheet, PDF (10/16 Pages) NEC – 32M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE REGISTERED TYPE

MC-4532DA727
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
Defines the number of bytes written into
0
80H 1
0
0
0
0
0
0
0 128 bytes
serial PD memory
1 Total number of bytes of serial PD memory 08H 0
0
0
0
1
0
0
0 256 bytes
2 Fundamental memory type
04H 0
0
0
0
0
1
0
0 SDRAM
3 Number of rows
0CH 0
0
0
0
1
1
0
0 12 rows
4 Number of columns
0BH 0
0
0
0
1
0
1
1 11 columns
5 Number of banks
01H 0
0
0
0
0
0
0
1 1 bank
6 Data width
48H 0
1
0
0
1
0
0
0 72 bits
7 Data width (continued)
00H 0
0
0
0
0
0
0
00
8 Voltage interface
01H 0
0
0
0
0
0
0
1 LVTTL
9 CL = 3 Cycle time
-A75 75H 0
1
1
1
0
1
0
1 7.5 ns
10 CL = 3 Access time
-A75 54H 0
1
0
1
0
1
0
0 5.4 ns
11 DIMM configuration type
02H 0
0
0
0
0
0
1
0 ECC
12 Refresh rate/type
13 SDRAM width
14 Error checking SDRAM width
15 Minimum clock delay
80H 1
0
0
0
0
0
0
0 Normal
04H 0
0
0
0
0
1
0
0 ×4
04H 0
0
0
0
0
1
0
0 ×4
01H 0
0
0
0
0
0
0
1 1 clock
16 Burst length supported
8FH 1
0
0
0
1
1
1
1 1, 2, 4, 8, F
17 Number of banks on each SDRAM
04H 0
0
0
0
0
1
0
0 4 banks
5
18 /CAS latency supported
19 /CS latency supported
06H 0
0
0
0
0
1
1
0 2, 3
01H 0
0
0
0
0
0
0
10
20 /WE latency supported
01H 0
0
0
0
0
0
0
10
21 SDRAM module attributes
1FH 0
0
0
1
1
1
1
1 Registered
22 SDRAM device attributes : General
0EH 0
0
0
0
1
1
1
0
5
23 CL = 2 Cycle time
-A75 A0H 1
0
1
0
0
0
0
0 10 ns
5
24 CL = 2 Access time
-A75 60H 0
1
1
0
0
0
0
0 6 ns
25-26
00H 0
0
0
0
0
0
0
0
5
27
tRP(MIN.)
28
tRRD(MIN.)
5
29
tRCD(MIN.)
30
tRAS(MIN.)
31 Module bank density
-A75 14H 0
0
0
1
0
1
0
0 20 ns
-A75 0FH 0
0
0
0
1
1
1
1 15 ns
-A75 14H 0
0
0
1
0
1
0
0 20 ns
-A75 2DH 0
0
1
0
1
1
0
1 45 ns
40H 0
1
0
0
0
0
0
0 256M bytes
10
Data Sheet M14210EJ3V0DS00