AS8E32K32 데이터 시트보기 (PDF) - Austin Semiconductor

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AS8E32K32

32K x 32 EEPROM

Austin Semiconductor 

AUSTIN SEMICONDUCTOR, INC.

AS8E32K32

32K x 32 EEPROM

Software Data Protection Enable Algorithm(1)

Load Data AA

to

Address 5555

Load Data 55

to

Address 2AAA

Load Data A0

to

Address 5555

Load Data XX

to

Any Address(4)

Writes Enabled(2)

Load Last Byte

to

Last Address

Enter Data

Protect State

Software Data Protection Disable Algorithm(1)

Load Data AA

to

Address 5555

Load Data 55

to

Address 2AAA

Load Data 80

to

Address 5555

Load Data AA

to

Address 5555

Load Data 20

to

Address 5555

Load Data XX

to

Any Address(4)

Load Last Byte

to

Last Address

Exit Data Protect

State(3)

Notes:

1. Data Format: I/O 7 - I/O 0, I/O 15 - I/O 8, I/O 23 - I/O 16, and I/O 31 - I/O 24, (Hex)

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

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

4. 1 to 64 bytes of data are loaded.

5. A0-A12 of the selected I/O bytes must conform to the addressing sequence for the first three bytes as shown above.

6. After the command sequence has been issued and a page write operation follows, the page address inputs (A5-A14) of the selected I/O

bytes must be the same for each high to low transition of WE\ (or CE\).

7. OE Must be high only when WE\ and CE\ are both low.

AS8E32K32

REV. 1.5 9/99

9

Austin Semiconductor, Inc., reserves the right to change products or specifications without notice.

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