EBD26UC6AMSA
Serial PD Matrix
Byte No. Function described
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Hex value
Comments
128 bytes
Number of bytes utilized by module
0
1
1
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
80H
08H
manufacturer
Total number of bytes in serial PD
256 bytes
device
2
3
4
5
6
7
8
Memory type
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
1
0
0
0
0
1
1
0
0
1
0
0
0
1
1
1
0
0
0
0
07H
0DH
09H
02H
40H
00H
04H
DDR SDRAM
Number of row address
Number of column address
Number of DIMM ranks
Module data width
13
9
2
64 bits
0
Module data width continuation
Voltage interface level of this assembly
SSTL2
DDR SDRAM cycle time, CL = X
-6B
-7B
SDRAM access from clock (tAC)
-6B
-7B
9
0
0
0
1
1
1
1
1
1
0
1
1
0
0
0
0
1
0
0
0
0
0
1
0
60H
75H
70H
CL = 2.5*1
10
0.7ns*1
0
0
1
0
1
0
1
0
0
0
1
0
0
0
1
0
75H
00H
0.75ns*1
None
7.8µs
Self refresh
11
12
DIMM configuration type
Refresh rate/type
1
0
0
0
0
0
1
0
82H
13
14
Primary SDRAM width
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
10H
00H
× 16
Error checking SDRAM width
Not used
SDRAM device attributes:
Minimum clock delay back-to-back
column access
15
0
0
0
0
0
0
0
1
01H
1 CLK
SDRAM device attributes:
16
17
0
0
0
0
0
0
0
0
1
0
1
1
1
0
0
0
0EH
04H
2,4,8
4
Burst length supported
SDRAM device attributes: Number of
banks on SDRAM device
18
19
20
21
22
SDRAM device attributes: /CAS latency 0
0
0
0
0
1
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
1
0
0
0
0CH
01H
02H
20H
C0H
2, 2.5
SDRAM device attributes: /CS latency
SDRAM device attributes: /WE latency
SDRAM module attributes
0
0
0
1
0
1
Unbuffered
VDD ± 0.2V
SDRAM device attributes: General
Minimum clock cycle time at
CL = X –0.5
-6B
23
0
1
0
1
0
1
1
1
1
1
0
1
0
0
0
1
0
0
0
0
0
1
0
0
75H
A0H
70H
CL = 2*1
-7B
Maximum data access time (tAC) from
clock at CL = X –0.5
-6B
24
0.7ns*1
-7B
0
0
1
0
1
0
1
0
0
0
1
0
0
0
1
0
75H
00H
0.75ns*1
25 to 26
27
Minimum row precharge time (tRP)
-6B
-7B
0
0
1
1
0
0
0
1
1
0
0
0
0
0
0
0
48H
50H
18ns
20ns
Minimum row active to row active delay
28
(tRRD)
-6B
0
0
0
0
1
1
1
1
0
1
0
1
0
0
0
0
30H
3CH
12ns
15ns
-7B
Preliminary Data Sheet E0499E10 (Ver. 1.0)
5
ELPIDA [ ELPIDA MEMORY ]
