Datasheet

9
0270L–PEEPR–2/09
AT28C64B
17. Page Mode Write Waveforms
(1)(2)
Notes: 1. A6 through A12 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.
18. Chip Erase Waveforms
t
S
= t
H
= 1 µs (min.)
t
W
= 10 ms (min.)
V
H
= 12.0V ±0.5V
16. Page Mode Characteristics
Symbol Parameter Min Max Units
t
WC
Write Cycle Time 10 ms
t
WC
Write Cycle Time (option available – Ref. AT28HC64BF datasheet) 2 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
OE
WE
CE
A0 -A12
DATA
t
AS
VALID ADD
VALID DATA
t
AH
t
DS
t
WP
t
WPH
t
DH
t
BLC
t
WC
t
S
t
W
t
H