13

AT49BV/LV160(T)/161(T)

1427L–FLASH–02/03

Notes:

1. The DATA FORMAT shown for each bus cycle is as follows; I/O7 - I/O0 (Hex). In word operation I/O15 - I/O8 are Don’t Care.

The ADDRESS FORMAT shown for each bus cycle is as follows: A11 - A0 (Hex). Address A19 through A11 are Don’t Care

in the word mode. Address A19 through A11 and A-1 are Don’t Care in the byte mode.

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

3. SA = sector address. Any byte/word address within a sector can be used to designate the sector address (see pages 15 and

16 for details).

4. Once a sector is in the lockdown mode, data in the protected sector cannot be changed unless the chip is reset or power

cycled.

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

6. If data bit D1 is “0”, block B is locked. If data bit D1 is “1”, block B can be reprogrammed.

7. The default state (after power-up) of the configuration register is “00”.

Command Definition in Hex

(1)

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

D

OUT

Chip Erase

6

555

AA

AAA

(2)

55

555

80

555

AA

AAA

55

555

10

Sector Erase

6

555

AA

AAA

55

555

80

555

AA

AAA

55

30

Byte/Word Program

4

555

AA

AAA

55

555

A0

Addr

D

IN

Enter Single Pulse

Program Mode

6

555

AA

AAA

55

555

80

555

AA

AAA

55

555

A0

Single Pulse

Byte/Word Program

1

Addr

D

IN

Sector Lockdown

6

555

AA

AAA

55

555

80

555

AA

AAA

55

SA

(3)(4)

60

Erase/Program

Suspend

1

XXX

B0

Erase/Program

Resume

1XXX

30

Product ID Entry

3

555

AA

AAA

55

555

90

Product ID Exit

(5)

3

555

AA

AAA

55

555

F0

Product ID Exit

(5)

1XXX

F0

Program Protection

Register

4

555

AA

AAA

55

555

C0

Addr

D

IN

Lock Protection

Register - Block B

4

555

AA

AAA

55

555

C0

080

X0

Status of Block B

Protection

4

555

AA

AAA

55

555

90

80

D

OUT

(6)

Set Configuration

Register

4

555

AA

AAA

55

555

D0

XXX

00/01

(7)

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 and V

PP

with Respect to Ground ...................................-0.6V to +13.0V