AT28C64B-20 Просмотр технического описания (PDF) - Atmel Corporation

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AT28C64B-20

64K(8K x 8) Parallel EEPROM Page Write and Software Data Protection

Atmel Corporation 

Software Data Protection Disable Algorithm(1)

LOAD DATA AA

TO

ADDRESS 1555

LOAD DATA 55

TO

ADDRESS 0AAA

LOAD DATA 80

TO

ADDRESS 1555

LOAD DATA AA

TO

ADDRESS 1555

LOAD DATA 55

TO

ADDRESS 0AAA

LOAD DATA 20

TO

ADDRESS 1555

LOAD DATA XX

TO

ANY ADDRESS(4)

EXIT DATA

PROTECT STATE(3)

LOAD LAST BYTE

TO

LAST ADDRESS

Note:

1. Notes for software program code:

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

Address Format: A12 - A0 (Hex).

3. Write Protect state will be activated at end of write even if no other data is loaded.

4. Write Protect state will be deactivated at end of write period even if no other data is

loaded.

5. 1 to 64 bytes of data are loaded.

10 AT28C64B

0270I–PEEPR–08/03

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