29C010A データシートの表示（PDF） - Atmel Corporation

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29C010A

1 Megabit 128K x 8 5-volt Only CMOS Flash Memory

Atmel Corporation 

Software Data Protection Enable

Algorithm(1)

LOAD DATA AA

TO

ADDRESS 5555

Software Data Protection Disable

Algorithm(1)

LOAD DATA AA

TO

ADDRESS 5555

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA A0

TO

ADDRESS 5555

WRITES ENABLED

LOAD DATA 80

TO

ADDRESS 5555

LOAD DATA

TO

PAGE (128 BYTES)(4)

ENTER DATA

PROTECT STATE(2)

LOAD DATA AA

TO

ADDRESS 5555

Notes:

1. Data Format: I/O7 - I/O0 (Hex); Address Format:

A14 - A0 (Hex).

2. Data Protect state will be activated at end of pro-

gram cycle.

3. Data Protect state will be deactivated at end of pro-

gram period.

4. 128 bytes of data MUST BE loaded.

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA 20

TO

ADDRESS 5555

EXIT DATA

PROTECT STATE(3)

LOAD DATA

TO

PAGE (128 BYTES)(4)

Software Protected Program Cycle Waveform(1)(2)(3)

Notes:

1. A7 through A16 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.

10 AT29C010A

0394E–FLASH–11/02

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