W49F002U

- 6 -

TABLE OF COMMAND DEFINITION

(1)

COMMAND

NO.

OF

1ST

CYCLE

2ND

CYCLE

3RD

CYCLE

4TH

CYCLE

5TH

CYCLE

6TH

CYCLE

DESCRIPTION

Cycles Addr. Data Addr. Data Addr. Data Addr. Data Addr. Data Addr. Data

Read

1

Chip Erase

6

5555 AA 2AAA 55 5555 80 5555 AA

2AAA 55

5555 10

Sector Erase

6

5555 AA 2AAA 55 5555 80 5555 AA

2AAA 55

SA

(3)

30

Byte Program

4

Boot Block Lockout

6

5555 AA 2AAA 55 5555 80 5555 AA

2AAA 55

5555 40

Product ID Entry

3

5555 AA 2AAA 55 5555 90

Product ID Exit

(2)

3

5555 AA 2AAA 55 5555 F0

Product ID Exit

(2)

1

XXXX F0

Notes:

1. Address Format: A14

−A0 (Hex); Data Format: DQ7-DQ0 (Hex)

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

3. SA means: Sector Address

If SA is within 3C000 to 3FFFF (Boot Block address range), and the Boot Block programming lockout feature is activated,

nothing will happen and the device will go back to read mode after 100nS.

If the Boot Block programming lockout feature is not activated, this command will erase Boot Block.

If SA is within 3A000 to 3BFFF (Parameter Block1 address range), this command will erase PB1.

If SA is within 38000 to 39FFF (Parameter Block2 address range), this command will erase PB2.

If SA is within 20000 to 37FFF (Main Memory Block1 address range), this command will erase MMB1.

If SA is within 00000 to 1FFFF (Main Memory Block2 address range), this command will erase MMB2.