at29lv020 ATMEL Corporation, at29lv020 Datasheet - Page 10

• Manufacturer Part Number: at29lv020
• Description: 2-megabit 256k X 8 3-volt Only Flash Memory
• Manufacturer: ATMEL Corporation

16. Program Cycle Characteristics
17. Software Protected Program Waveform
Notes:
18. Programming Algorithm
10
Symbol
t
t
t
t
t
t
t
t
WC
AS
AH
DS
DH
WP
BLC
WPH
1. A8 through A17 must specify the sector address during each high to low transition of WE (or CE) after the software code has
2. OE must be high when WE and CE are both low.
3. All words that are not loaded within the sector being programmed will be indeterminate.
AT29LV020
been entered.
SECTOR (256 BYTES)
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
ADDRESS 2AAA
ADDRESS 5555
ADDRESS 5555
LOAD DATA AA
LOAD DATA A0
LOAD DATA 55
LOAD DATA
TO
TO
TO
TO
(3)
WRITES ENABLED
ENTER DATA
PROTECT STATE
(1)
(2)
Notes:
1. Data Format: I/O7 - I/O0 (Hex);
2. Data Protect state will be re-activated at end of
3. 256 bytes of data MUST BE loaded.
Address Format: A14 - A0 (Hex).
program cycle.
Min
100
100
200
200
10
10
Max
150
20
0565D–FLASH–2/05
Units
ms
ns
ns
ns
ns
ns
µs
ns