MC-4532CD646 Datasheet, PDF (10/16 Pages) NEC – 32M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE

MC-4532CD646
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
1 Total number of bytes of serial PD memory
2 Fundamental memory type
3 Number of rows
4 Number of columns
E _{5 Number of banks}
6 Data width
7 Data width (continued)
O^{8 Voltage interface}
9 CL = 3 Cycle time
-A80
-A10
L^{10 CL = 3 Access time}
-A80
80H
08H
04H
0CH
0AH
02H
40H
00H
01H
80H
A0H
60H
1
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
1
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
1
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0 128 bytes
0 256 bytes
0 SDRAM
0 12 rows
0 10 columns
0 2 banks
0 64 bits
00
1 LVTTL
0 8 ns
0 10 ns
0 6 ns
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25-26
27
28
29
30
-A10 60H 0
1
1
0
0
0
0
0 6 ns
DIMM configuration type
00H 0
0
0
0
0
0
0
0 None
Refresh rate/type
80H 1
0
0
0
0
0
0
0 Normal
SDRAM width
08H 0
0
0
0
1
0
0
0 ×8
Error checking SDRAM width
00H 0
0
0
0
0
0
0
0 None
Minimum clock delay
01H 0
0
0
0
0
0
0
1 1 clock
P _{Burst length supported}
8FH 1
0
0
0
1
1
1
1 1, 2, 4, 8, F
Number of banks on each SDRAM
04H 0
0
0
0
0
1
0
0 4 banks
/CAS latency supported
06H 0
0
0
0
0
1
1
0 2, 3
r ^{/CS latency supported}
01H 0
0
0
0
0
0
0
10
/WE latency supported
01H 0
0
0
0
0
0
0
10
SDRAM module attributes
00H 0
0
0
0
0
0
0
0
o _{SDRAM device attributes : General}
0EH 0
0
0
0
1
1
1
0
CL = 2 Cycle time
-A80 A0H 1
0
1
0
0
0
0
0 10 ns
-A10 D0H 1
1
0
1
0
0
0
0 13 ns
d _{CL = 2 Access time}
-A80 60H 0
1
1
0
0
0
0
0 6 ns
-A10 70H 0
1
1
1
0
0
0
0 7 ns
00H 0
0
0
0
0
0
0
0
u ^tRP(MIN.)
-A80 14H 0
0
0
1
0
1
0
0 20 ns
-A10 14H 0
0
0
1
0
1
0
0 20 ns
tRRD(MIN.)
-A80 10H 0
0
0
1
0
0
0
0 16 ns
-A10 14H 0
0
0
1
0
1
0
0 20 ns
c _tRCD(MIN.)
-A80 14H 0
0
0
1
0
1
0
0 20 ns
-A10 14H 0
0
0
1
0
1
0
0 20 ns
t ^tRAS(MIN.)
-A80 30H 0
0
1
1
0
0
0
0 48 ns
-A10 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
10
Data Sheet E0055N10