EBE21UE8ACWA
Serial PD Matrix
Byte No. Function described
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Hex value Comments
Number of bytes utilized by module
manufacturer
0
1
1
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
80H
08H
128 bytes
256 bytes
Total number of bytes in serial PD
device
2
3
4
5
6
7
Memory type
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
1
0
0
0
0
0
1
1
0
0
0
0
0
0
1
0
0
08H
0EH
0AH
61H
40H
00H
DDR2 SDRAM
Number of row address
Number of column address
Number of DIMM ranks
Module data width
14
10
2
64
0
Module data width continuation
Voltage interface level of this
assembly
8
9
0
0
0
0
0
1
0
0
0
0
1
1
0
0
1
1
05H
25H
SSTL 1.8V
2.5ns*1
DDR SDRAM cycle time, CL = X
-8E (CL = 5)
-8G (CL = 6)
-6E (CL = 5)
0
0
0
0
1
1
0
1
0
0
1
0
0
0
1
0
25H
30H
2.5ns*1
3.0ns*1
SDRAM access from clock (tAC)
-8E, -8G
10
0
1
0
0
0
0
0
0
40H
0.4ns*1
-6E
0
0
1
0
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
0
1
0
0
0
0
0
0
0
1
0
0
0
1
0
0
0
0
0
45H
00H
82H
08H
00H
00H
0.45ns*1
None
7.8µs
× 8
11
12
13
14
15
DIMM configuration type
Refresh rate/type
Primary SDRAM width
Error checking SDRAM width
Reserved
None
0
SDRAM device attributes:
Burst length supported
16
17
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0CH
08H
4,8
8
SDRAM device attributes: Number of
banks on SDRAM device
SDRAM device attributes: /CAS
18
latency
0
0
1
1
1
0
0
0
38H
3, 4, 5
-8E, -6E
-8G
0
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
1
0
0
70H
01H
02H
00H
4, 5, 6
19
20
21
DIMM Mechanical Characteristics
DIMM type information
SDRAM module attributes
4.00mm max.
Unbuffered
Normal
Weak Driver
50Ω ODT Support
22
23
SDRAM device attributes: General
0
0
0
0
0
0
1
1
03H
Minimum clock cycle time at
CL = X − 1
-8E, -6E (CL = 4)
0
0
0
0
0
0
0
0
1
1
1
0
1
1
0
0
0
1
1
1
1
0
1
1
1
0
0
0
0
1
1
0
0
1
0
1
0
0
0
0
0
0
1
0
0
1
0
1
3DH
30H
50H
45H
50H
3DH
3.75ns*1
3.0ns*1
0.5ns*1
0.45ns*1
5.0ns*1
3.75ns*1
-8G (CL = 5)
Maximum data access time (tAC)
from clock at CL = X − 1
-8E, -6E (CL = 4)
24
25
-8G (CL = 5)
Minimum clock cycle time at
CL = X − 2
-8E, -6E (CL = 3)
-8G (CL = 4)
Data Sheet E1213E10 (Ver. 1.0)
5
ELPIDA [ ELPIDA MEMORY ]
