eds1232aase Elpida Memory, Inc., eds1232aase Datasheet - Page 15

• Manufacturer Part Number: eds1232aase
• Description: 128m Bits Sdram
• Manufacturer: Elpida Memory, Inc.

Truth Table
Command Truth Table
Function
Device deselect
No operation
Burst stop
Read
Read with auto precharge
Write
Write with auto precharge
Bank activate
Precharge select bank
Precharge all banks
Mode register set
Remark: H: VIH. L: VIL. ×: VIH or VIL, V = Valid data
DQM Truth Table
Function
Data write / output enable
Data mask / output disable
DQ0 to DQ7 write enable/output enable
DQ8 to DQ15 write enable/output enable
DQ16 to DQ23 write enable/output enable
DQ24 to DQ31 write enable/output enable
DQ0 to DQ7 write inhibit/output disable
DQ8 to DQ15 write inhibit/output disable
DQ16 to DQ23 write inhibit/output disable
DQ24 to DQ31 write inhibit/output disable
Remark: H: VIH. L: VIL. ×: VIH or VIL
Data Sheet E0350E31 (Ver. 3.1)
Symbol
DESL
NOP
BST
READ
READA
WRIT
WRITA
ACT
PRE
PALL
MRS
Symbol
ENB
MASK
ENB0
ENB1
ENB2
ENB3
MASK0
MASK 1
MASK 2
MASK 3
CKE
n – 1
H
H
H
H
H
H
H
H
H
H
H
n
×
×
×
×
×
×
×
×
×
×
×
15
CKE
n – 1
H
H
H
H
H
H
H
H
H
H
/CS
H
L
L
L
L
L
L
L
L
L
L
n
×
×
×
×
×
×
×
×
×
×
/RAS
×
H
H
H
H
H
H
L
L
L
L
/CAS
×
H
H
L
L
L
L
H
H
H
L
DQM
0
L
H
L
×
×
×
H
×
×
×
/WE
×
H
L
H
H
L
L
H
L
L
L
1
L
H
×
L
×
×
×
H
×
×
EDS1232AASE
BA1
BA0,
×
×
×
V
V
V
V
V
V
×
L
2
L
H
×
×
L
×
×
×
H
×
A10
×
×
×
L
H
L
H
V
L
H
L
3
L
H
×
×
×
L
×
×
×
H
A11
A9 - A0,
×
×
×
V
V
V
V
V
×
×
V