參數(shù)資料
型號: 7P512CFA4500C25
廠商: WHITE ELECTRONIC DESIGNS CORP
元件分類: PROM
英文描述: 256M X 16 FLASH 3V PROM CARD, 250 ns, XMA50
封裝: CARD-50
文件頁數(shù): 9/32頁
文件大?。?/td> 264K
代理商: 7P512CFA4500C25
17
White Electronic Designs Corporation (508) 485-4000 www.whiteedc.com
White Electronic Designs
CompactFlashTM Cards
CFA45 Series
Parameter
Symbol
IEEE Symbol
Min. ns
Max. ns
Data Setup before WE
tsu (D-WEH)
tDVWH
80
Data Hold following WE
th (D)
tlWMDX
30
WE Pulse Width
tw (WE)
tWLWH
150
Address Setup Time
tsu (A)
tAVWL
30
CE Setup before WE
tsu (CE)
tELWL
0
Write recovery Time
trec (WE)
tWMAX
30
Address Hold Time
th (A)
tGHAX
20
CE Hold following WE
th (CE)
tGHEH
20
Wait Delay Falling from WE
tv (WT-WE)
tWLWTV
35
WE High from Wait Release
tv (WT)
tWTHWH
0
Wait Width Time
tw (WT)
tWTLWTH
350
COMMON MEMORY WRITE TIMING
NOTE: The maximum load on WAIT is 1 LSTTL with 50pF total load. All times are in nanoseconds. DIN signifies data
provided by the system to the PC Card. The WAIT signal may be ignored if the WE cycle-to-cycle time is greater than the
Wait Width time. The Max Wait Width time can be determined from the Card Information Structure. The Wait Width time
meets the PCMCIA specification of 12s but is intentionally less in this specification.
COMMON MEMORY WRITE TIMING DIAGRAM
An
REG
CE
WE
DIN
tSU (A)
tW (WE)
tSU (CE)
WAIT
tH (A)
tW (WT)
tH (CE)
tREC (WE)
tV (WT-WE)
tSU (D-WEH)
tV (WT)
tH (D)
DIN Valid
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