Rainbow Electronics AT29C257 - Manual (Page 7)

Program Cycle Characteristics
Symbol Parameter Min Max Units
t WC Write Cycle Time 10 ms
t
AS
Address Set-up Time 0 ns
t AH Address Hold Time 50 ns
t
DS
Data Set-up Time 35 ns
t DH Data Hold Time 0 ns
t
WP
Write Pulse Width 90 ns
t
BLC
Byte Load Cycle Time 150
µ
s
t
WPH
Write Pulse Width High 100 ns
Program Cycle Waveforms
(1, 2, 3)
Notes: 1. A6 through A14 must specify the page address
during each high to low transition of WE (or CE).
2. OE must be high when WE and CE are both low.
3. All bytes that are not loaded within the page being
programmed will be indeterminate.
AT29C257
4-111