參數(shù)資料
型號(hào): 29C020
廠商: Atmel Corp.
英文描述: 2-Megabit 256K x 8 5-volt Only CMOS Flash Memory
中文描述: 2兆位256K × 8 5伏只有閃存的CMOS
文件頁數(shù): 8/11頁
文件大?。?/td> 257K
代理商: 29C020
Software Protected Program Cycle Waveform
(1, 2, 3)
Notes: 1. A8 through A17 must specify the sector address
during each high to low transition of WE (or CE)
after the software code has been entered.
2. OE must be high when WE and CE are both low.
3.
All bytes that are not loaded within the sector being
programmed will be indeterminate.
LOAD DATA
SECTOR (TO
LOAD DATA A0
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA AA
TO
ADDRESS 5555
Notes for software program code:
1. Data Format: I/O7 - I/O0 (Hex);
Address Format: A14 - A0 (Hex).
2. Data Protect state will be activated at end of program cycle.
3. Data Protect state will be deactivated at end of program
period.
4. 256-bytes of data
MUST BE
loaded.
ENTER DATA
PROTECT STATE
(2)
WRITES ENABLED
Software Data
Protection Enable
Algorithm
(1)
LOAD DATA
TO
SECTOR (256 BYTES)
(4)
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 80
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 20
TO
ADDRESS 5555
EXIT DATA
Software Data
Protection Disable
Algorithm
(1)
8
AT29C020
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