參數(shù)資料
型號: EDS6416CHTA-75-E
廠商: ELPIDA MEMORY INC
元件分類: DRAM
英文描述: 64M bits SDRAM (4M words x 16 bits)
中文描述: 4M X 16 SYNCHRONOUS DRAM, 5.4 ns, PDSO54
封裝: ROHS COMPLIANT, PLASTIC, TSOP2-54
文件頁數(shù): 14/49頁
文件大小: 716K
代理商: EDS6416CHTA-75-E
EDS6416AHBH, EDS6416CHBH
DQM Truth Table
Data Sheet E0442E40 (Ver. 4.0)
14
CKE
Commands
Symbol
n – 1
n
UDQM
LDQM
Upper byte write enable/output enable
ENBU
H
×
×
×
×
L
×
×
L
Lower byte write enable/output enable
ENBL
H
Upper byte write inhibit/output disable
MASKU
H
H
×
Lower byte write inhibit/output disable
Remark: H: VIH. L: VIL.
×
: VIH or VIL
Write:
l
DID is needed.
Read:
l
DOD is needed.
CKE Truth Table
MASKL
H
×
H
CKE
Current state
Function
Symbol
n – 1
n
/CS
×
×
×
/RAS
×
×
×
/CAS
×
×
×
/WE
×
×
×
Address
×
×
×
×
×
×
×
×
×
×
×
Activating
Clock suspend mode entry
H
L
Any
Clock suspend mode
L
L
Clock suspend
Clock suspend mode exit
L
H
Idle
CBR (auto) refresh command
REF
H
H
L
L
L
H
Idle
Self refresh entry
SELF
H
L
L
L
L
H
Self refresh
Self refresh exit
L
H
L
H
H
H
L
H
H
×
×
×
Idle
Power down entry
H
L
L
H
H
H
H
L
H
×
×
×
×
×
×
Power down
Power down exit
L
H
H
Remark: H: VIH. L: VIL.
×
: VIH or VIL
L
H
L
H
H
H
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