4

AT49BV/LV1024A

3332B–FLASH–12/03

Notes:

1. The DATA FORMAT in each bus cycle is as follows: I/O15 - I/O8 (Don’t Care); I/O7 - I/O0 (Hex).

The ADDRESS FORMAT in each bus cycle is as follows: A11 - A0 (Hex); A11 - A15 (Don’t Care).

2. Since A11 is a Don’t Care, AAA can be replaced with 2AA.

3. The 8K word boot sector has the address range 0000H to 1FFFH.

4. Either one of the Product ID Exit commands can be used.

Command Definition (in Hex)

Command

Sequence

Bus

Cycles

1st Bus

Cycle

2nd Bus

Cycle

3rd Bus

Cycle

4th Bus

Cycle

5th Bus

Cycle

6th Bus

Cycle

Addr

Data

Addr

Data

Addr

Data

Addr

Data

Addr

Data

Addr

Data

Read

1

Addr

Chip Erase

6

555

AA

AAA

(2)

55

555

80

555

AA

AAA

55

555

10

Main Memory Erase

6

555

AA

AAA

55

555

80

555

AA

AAA

55

555

30

Word Program

4

555

AA

AAA

55

555

A0

Addr

Boot Block Lockout

(3)

6

555

AA

AAA

55

555

80

555

AA

AAA

55

555

40

Product ID Entry

3

555

AA

AAA

55

555

90

Product ID Exit

(4)

3

555

AA

AAA

55

555

F0

Product ID Exit

(4)

1

xxx

F0

Absolute Maximum Ratings*

Temperature under Bias ................................ -55°C to +125°C

*NOTICE:

Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent dam-

age to the device. This is a stress rating only and

functional operation of the device at these or any

other conditions beyond those indicated in the

operational sections of this specification is not

implied. Exposure to absolute maximum rating

conditions for extended periods may affect device

reliability.

Storage Temperature ..................................... -65°C to +150°C

All Input Voltages

(including NC Pins)

with Respect to Ground ...................................-0.6V to +6.25V

All Output Voltages

with Respect to Ground .............................-0.6V to V

Voltage on OE

with Respect to Ground ...................................-0.6V to +13.5V