CX28HC256EMB-90 データシートの表示（PDF） - Intersil
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CX28HC256EMB-90 Datasheet PDF : 20 Pages
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X28HC256
Write Cycle Limits
PARAMETER
SYMBOL
MIN
TYP
(Note 6)
MAX
UNIT
Write Cycle Time
tWC (Note 7)
3
5
ms
Address Setup Time
tAS
0
ns
Address Hold Time
tAH
50
ns
Write Setup Time
tCS
0
ns
Write Hold Time
tCH
0
ns
CE Pulse Width
tCW
50
ns
OE HIGH Setup Time
tOES
0
ns
OE HIGH Hold Time
tOEH
0
ns
WE Pulse Width
tWP
50
ns
WE HIGH Recovery (page write only)
tWPH (Note 8)
50
ns
Data Valid
tDV
1
µs
Data Setup
tDS
50
ns
Data Hold
tDH
0
ns
Delay to Next Write After Polling is True
tDW (Note 8)
10
µs
Byte Load Cycle
tBLC
0.15
100
µs
NOTES:
6. Typical values are for TA = +25°C and nominal supply voltage.
7. tWC is the minimum cycle time to be allowed from the system perspective unless polling techniques are used. It is the maximum time the device
requires to automatically complete the internal write operation.
8. tWPH and tDW are periodically sampled and not 100% tested.
WE Controlled Write Cycle
tWC
ADDRESS
tAS
tAH
tCS
tCH
CE
OE
tOES
tOEH
tWP
WE
DATA IN
DATA OUT
DATA VALID
tDS
tDH
HIGH Z
13
FN8108.2
May 7, 2007
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