參數(shù)資料
型號: MB81N643289
廠商: Fujitsu Limited
英文描述: DRILL BIT HIGH SPEED STEEL .021,1
中文描述: 8 × 256K × 32位的雙倍數(shù)據(jù)速率FCRAMTM
文件頁數(shù): 39/64頁
文件大?。?/td> 1732K
代理商: MB81N643289
39
MB81N643289-50/-60
Preliminary (AE1E)
I
AC CHARACTERISTICS (continued)
Fig. 14 – AC TIMING, PULSE WIDTH
t
RC
, t
RAS
, t
PCAL
, t
REF
, t
REFI
, t
REFC
, t
PAUSE
CLK
Input
(Controls &
Addresses)
Note:
All parameters listed above are measured from the cross point at rising edge of the CLK and falling
edge of CLK of one command input to next command input.
Command
Command
CLK
V
X
V
X
PD
CLK
PDEN
Command
l
PDEX
(min)
NOP
ACTV
Fig. 15 – AC TIMING of Power Down Mode
PDEX
NOP
Don’t Care
t
PDE
t
RC
(min), t
REF
(max)
CLK
Note:
Minimum 2 clock cycles is required for complete power down on clock buffer.
V
REF
NOP
l
PD
PD
CLK
t
IS
SELF
Command
l
LOCK
(min)
NOP
ACTV
Fig. 16 – AC TIMING of Self-refresh Mode
NOP
NOP
Don’t Care
t
PDE
CLK
Note:
1. Minimum 2 clock cycles is required for complete power down on clock buffer.
2
PD must maintain High level and clock must be provided during the l
LOCK
period.
l
LOCK
must be satisfied before any command input.
V
REF
Note *1
t
REFC
(min)
*2
l
PD
NOP
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