AT28HC256E ATMEL Corporation, AT28HC256E Datasheet - Page 7

• Manufacturer Part Number: AT28HC256E
• Description: 256 32K x 8 High Speed Parallel EEPROMs
• Manufacturer: ATMEL Corporation

Page Mode Write Characteristics
Page Mode Write Waveforms
Notes:
Chip Erase Waveforms
t
t
V
S
W
Symbol
t
t
t
t
t
t
t
t
H
WC
AS
AH
DS
DH
WP
BLC
WPH
= t
= 10 msec (min.)
= 12.0V
H
= 5 sec (min.)
1.
2.
A6 through A14 must specify the same page address during each high to low transition of WE (or CE).
OE must be high only when WE and CE are both low.
0.5V
Parameter
Write Cycle Time
Address Set-up Time
Address Hold Time
Data Set-up Time
Data Hold Time
Write Pulse Width
Byte Load Cycle Time
Write Pulse Width High
(1)(2)
AT28HC256
AT28HC256F
Min
100
50
50
50
0
0
Typ
5
2
Max
150
3.0
10
Units
ms
ms
ns
ns
ns
ns
ns
ns
s
7