AT29LV512 查看數據表（PDF） - Atmel Corporation
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AT29LV512 Datasheet PDF : 15 Pages
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16. Program Cycle Characteristics
Symbol Parameter
Min
tWC
Write Cycle Time
tAS
Address Set-up Time
0
tAH
Address Hold Time
100
tDS
Data Set-up Time
100
tDH
Data Hold Time
10
tWP
Write Pulse Width
200
tBLC
Byte Load Cycle Time
tWPH
Write Pulse Width High
200
17. Software Protected Program Waveform(1)(2)(3)
AT29LV512
Max
Units
20
ms
ns
ns
ns
ns
ns
150
µs
ns
Notes:
1. OE must be high when WE and CE are both low.
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.
18. Programming Algorithm(1)
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA A0
TO
ADDRESS 5555
WRITES ENABLED
LOAD DATA
TO
SECTOR (128 BYTES)(3)
ENTER DATA
PROTECT STATE(2)
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.
9
0177O–FLASH–9/08
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