AT93C46 datasheet(5/15 Pages) ATMEL

5 / 15 page

AT93C46/56/57/66

Instruction Set for the AT93C46

Instruction

Code

Address

Data

Comments

x 8

x 16

x 8

x 16

READ

6 - A0

5 - A0

Reads data stored in memory, at

specified address.

EWEN

11XXXXX

11XXXX

Write enable must precede all

programming modes.

ERASE

6 - A0

5 - A0

Erase memory location A

n - A0.

WRITE

6 - A0

5 - A0

7 - D0

15 - D0

Writes memory location A

n - A0.

ERAL

10XXXXX

10XXXX

Erases all memory locations. Valid

only at V

CC = 4.5V to 5.5V.

WRAL

01XXXXX

01XXXX

7 - D0

15 - D0

Writes all memory locations. Valid

only at V

CC = 4.5V to 5.5V.

EWDS

00XXXXX

00XXXX

Disables all programming instructions.

Instruction Set for the AT93C57

Instruction

Code

Address

Data

Comments

x 8

x 16

x 8

x 16

READ

7 - A0

6 - A0

Reads data stored in memory, at

specified address.

EWEN

11XXXXXX

11XXXXX

Write enable must precede all

programming modes.

ERASE

7 - A0

6 - A0

Erase memory location A

n - A0.

WRITE

7 - A0

6 - A0

7 - D0

15 - D0

Writes memory location A

n - A0.

ERAL

10XXXXXX

10XXXXX

Erases all memory locations. Valid

only at V

CC = 4.5V to 5.5V.

WRAL

01XXXXXX

01XXXXX

7 - D0

15 - D0

Writes all memory locations. Valid

only at V

CC = 4.5V to 5.5V.

EWDS

00XXXXXX

00XXXXX

Disables all programming instructions.

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