EDD1216AASE ELPIDA [Elpida Memory], EDD1216AASE Datasheet - Page 38

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EDD1216AASE

Manufacturer Part Number
EDD1216AASE
Description
128M bits DDR SDRAM (8M words x 16 bits)
Manufacturer
ELPIDA [Elpida Memory]
Datasheet

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Bank active command interval
1. Same
2. Different
Mode register set to Bank-active command interval
The interval between setting the mode register and executing a bank-active command must be no less than tMRD.
Preliminary Data Sheet E0614E20 (Ver. 2.0)
Command
Destination row of the consecutive ACT
command
Bank
address
Address
/CK
CK
BA
Row address
Any
Any
ROW: 0
Command
ACTV
Bank0
Active
ACT
Address
/CK
CK
State
ACTIVE
ACTIVE
IDLE
tRRD
Mode Register Set
CODE
MRS
ROW: 1
Operation
Two successive ACT commands can be issued at tRC interval. In between two
successive ACT operations, precharge command should be executed.
Precharge the bank. tRP after the precharge command, the consecutive ACT
command can be issued.
tRRD after an ACT command, the next ACT command can be issued.
ACT
Bank3
Active
Bank Active to Bank Active
NOP
tMRD
38
NOP
tRC
BS and ROW
Precharge
ACT
Bank3
Active
Bank0
PRE
NOP
NOP
EDD1216AASE
ROW: 0
ACT
Bank0
Active
NOP

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