5962-8863401UX_ Просмотр технического описания (PDF) - Atmel Corporation
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5962-8863401UX_ Datasheet PDF : 12 Pages
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AT28HC256
Page Mode Write Characteristics
Symbol
Parameter
Min
Typ
Max
Units
tWC
Write Cycle Time
AT28HC256
AT28HC256F
5
10
ms
2
3.0
ms
tAS
Address Set-up Time
0
ns
tAH
Address Hold Time
50
ns
tDS
Data Set-up Time
50
ns
tDH
Data Hold Time
0
ns
tWP
Write Pulse Width
100
ns
tBLC
Byte Load Cycle Time
150
µs
tWPH
Write Pulse Width High
50
ns
Page Mode Write Waveforms (1, 2)
Notes: 1. A6 through A14 must specify the same page address during each high to low transition of WE (or CE).
2. OE must be high only when WE and CE are both low.
Chip Erase Waveforms
tS = tH = 5 µsec (min.)
tW = 10 msec (min.)
VH = 12.0V ± 0.5V
2-285
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