AT49BV008A(T)/8192A(T)

7

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: A15 - A0 (Hex), A-1, and A15 - A18 (Don’t Care)

2. The boot sector has the address range

00000H to 03FFFH for the AT49BV008A; FC000H to FFFFFH for the

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

4. SA = sector addresses: (A0 - A18)

For the AT49BV008A

SA = 02XXX for BOOT BLOCK

SA = 04XXX for PARAMETER BLOCK 1

SA = 06XXX for PARAMETER BLOCK 2

SA = FEXXX for MAIN MEMORY ARRAY

For the AT49BV008AT

SA = FEXXX for BOOT BLOCK

SA = FAXXX for PARAMETER BLOCK 1

SA = F8XXX for PARAMETER BLOCK 2

SA = F6XXX for MAIN MEMORY ARRAY

Command Definition (in Hex) for Alternate Pin Definition of AT49BV008A(T)

(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

Chip Erase

6

A555

AA

5AAA

55

A555

80

A555

AA

5AAA

55

A555

10

Sector Erase

6

A555

AA

5AAA

55

A555

80

A555

AA

5AAA

55

SA

(4)

30

Byte/Word Program

4

A555

AA

5AAA

55

A555

A0

Addr

Boot Block Lockout

(2)

6

A555

AA

5AAA

55

A555

80

A555

AA

5AAA

55

A555

40

Product ID Entry

3

A555

AA

5AAA

55

A555

90

Product ID Exit

(3)

3

A555

AA

5AAA

55

A555

F0

Product ID Exit

(3)

1xxxx

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 RESET

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