W39V040FA

- 8 -

Operating Mode Selection - FWH Mode

Operation modes in FWH interface mode are determined by "START Cycle" when it is selected.

When it is not selected, its outputs (FWH[3:0]) will be disable. Please reference to the "FWH Cycle

Definition".

Table of Command Definition

COMMAND

NO. OF

1ST CYCLE

2ND CYCLE

3RD CYCLE

4TH CYCLE

5TH CYCLE

6TH CYCLE

DESCRIPTION

Cycles (1)

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

Page Erase

6

5555 AA

2AAA 55

5555 80

5555 AA

2AAA 55

Byte Program

4

5555 AA

2AAA 55

5555 A0

Top Boot Block

Lockout –

64K/16KByte

6

5555 AA

2AAA 55

5555 80

5555 AA

2AAA 55

5555 40/70

Product ID Entry

3

5555 AA

2AAA 55

5555 90

Product ID Exit

(4)

3

5555 AA

2AAA 55

5555 F0

Product ID Exit

(4)

1

XXXX F0

Notes:

1. The cycle means the write command cycle not the FWH clock cycle.

2. The Column Address / Row Address are mapped to the Low / High order Internal Address. i.e. Column Address

A[10:0] are mapped to the internal A[10:0], Row Address A[7:0] are mapped to the internal A[18:11]

3. Address Format: A14

−A0 (Hex); Data Format: DQ7-DQ0 (Hex)

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

5. SA: Sector Address

SA = 7XXXXh for Unique Sector7 (Boot Sector)

SA = 3XXXXh for Unique Sector3

SA = 6XXXXh for Unique Sector6

SA = 2XXXXh for Unique Sector2

SA = 5XXXXh for Unique Sector5

SA = 1XXXXh for Unique Sector1

SA = 4XXXXh for Unique Sector4

SA = 0XXXXh for Unique Sector0

6. PA : Page Address

PA = 7FXXXh for Page 15 in Sector 7

PA = 7EXXXh for Page 14 in Sector 7

PA = 7DXXXh for Page 13 in Sector 7

PA = 7CXXXh for Page 12 in Sector 7

PA = 7BXXXh for Page 11 in Sector 7

PA = 7AXXXh for Page 10 in Sector 7

PA = 79XXXh for Page 9 in Sector 7

PA = 78XXXh for Page 8 in Sector 7

PA = 77XXXh for Page 7 in Sector 7

PA = 76XXXh for Page 6 in Sector 7

PA = 75XXXh for Page 5 in Sector 7

PA = 74XXXh for Page 4 in Sector 7

PA = 73XXXh for Page 3 in Sector 7

PA = 72XXXh for Page 2 in Sector 7

PA = 71XXXh for Page 1 in Sector 7

PA = 70XXXh for Page 0 in Sector 7

PA =

6FXXXh

to

60XXXh

for

Page 15

to

Page 0

In

Sector 6

(Reference

to the

first

column)

PA =

5FXXXh

to

50XXXh

for

Page 15

to

Page 0

In

Sector 5

(Reference

to the

first

column)

PA =

4FXXXh

to

40XXXh

for

Page 15

to

Page 0

In

Sector 4

(Reference

to the

first

column)

PA =

3FXXXh

to

30XXXh

for

Page 15

to

Page 0

In

Sector 3

(Reference

to the

first

column)

PA =

2FXXXh

to

20XXXh

for

Page 15

to

Page 0

In

Sector 2

(Reference

to the

first

column)

PA =

1FXXXh

to

10XXXh

for

Page 15

to

Page 0

In

Sector 1

(Reference

to the

first

column)

PA =

0FXXXh

to

00XXXh

for

Page 15

to

Page 0

In

Sector 0

(Reference

to the

first

column)