8
AT29LV512
0177M–05/02
Software Protected Program Waveform
(1)(2)(3)
Notes: 1. OE must be high when WE and CE arebothlow.
2. A7 through A15 must specify the sector address during each high-to-low transition of WE
(or CE) after the software code
has been entered.
3. All bytes that are not loaded within the sector being programmed will be indeterminate.
Programming Algorithm
(1)
Notes: 1. Data Format: I/O7 - I/O0 (Hex); Address Format: A14 - A0 (Hex).
2. Data Protect state will be re-activated at end of program cycle.
3. 128 bytes of data MUST BE loaded.
Program Cycle Characteristics
Symbol Parameter Min Max Units
t
WC
WriteCycleTime 20 ms
t
AS
Address Set-up Time 0 ns
t
AH
Address Hold Time 100 ns
t
DS
Data Set-up Time 100 ns
t
DH
Data Hold Time 10 ns
t
WP
Write Pulse Width 200 ns
t
BLC
Byte Load Cycle Time 150 µs
t
WPH
Write Pulse Width High 200 ns
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA A0
TO
ADDRESS 5555
LOAD DATA
TO
SECTOR (128 BYTES)
(3)
WRITES ENABLED
ENTER DATA
PROTECT STATE
(2)
