Rainbow Electronics AT28HC256 - Manual (Page 7)

AT28HC256
7
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
Page Mode Write Characteristics
Symbol Parameter Min Typ Max Units
t
WC
Write Cycle Time (option available)
AT28HC256 5 10 ms
AT28HC256F 2 3 ms
t
AS
Address Setup Time 0 ns
t
AH
Address Hold Time 50 ns
t
DS
Data Setup Time 50 ns
t
DH
Data Hold Time 0 ns
t
WP
Write Pulse Width 100 ns
t
BLC
Byte Load Cycle Time 150 µs
t
WPH
Write Pulse Width High 50 ns
t
S
= t
H
= 5 µsec (min.)
t
W
= 10 msec (min.)
V
H
= 12.0V ± 0.5V