SST39VF1681-70-4C-EKE 参数 Datasheet PDF下载

16 Mbit Multi-Purpose Flash Plus

SST39VF1681 / SST39VF1682

Preliminary Specifications

TABLE 6: S

OFTWARE

C

OMMAND

S

EQUENCE

Command

Sequence

Byte-Program

Sector-Erase

Block-Erase

Chip-Erase

Erase-Suspend

Erase-Resume

Query Sec ID

4

User Security ID

Byte-Program

User Security ID

Program Lock-Out

Software ID Entry

6,7

CFI Query Entry

Software ID Exit

8,9

/CFI Exit/Sec ID Exit

Software ID Exit

/CFI Exit/Sec ID Exit

1st Bus

Write Cycle

Addr

1

AAAH

AAAH

AAAH

AAAH

XXXXH

XXXXH

AAAH

AAAH

AAAH

AAAH

AAAH

AAAH

XXH

Data

AAH

AAH

AAH

AAH

B0H

30H

AAH

AAH

AAH

AAH

AAH

AAH

F0H

2nd Bus

Write Cycle

Addr

555H

555H

555H

555H

Data

55H

55H

55H

55H

3rd Bus

Write Cycle

Addr

AAAH

AAAH

AAAH

AAAH

Data

A0H

80H

80H

80H

4th Bus

Write Cycle

Addr

BA

2

AAAH

AAAH

AAAH

Data

Data

AAH

AAH

AAH

5th Bus

Write Cycle

Addr

555H

555H

555H

Data

55H

55H

55H

6th Bus

Write Cycle

Addr

SA

X3

BA

X3

AAAH

Data

50H

30H

10H

555H

555H

555H

555H

555H

555H

55H

55H

55H

55H

55H

55H

AAAH

AAAH

AAAH

AAAH

AAAH

AAAH

88H

A5H

85H

90H

98H

F0H

BA

5

XXH

Data

00H

T6.1 1243

1. Address format A

11

-A

0

(Hex).

Addresses A

20

-A

12

can be V

IL

or V

IH

, but no other value, for Command sequence for SST39VF1681/1682.

2. BA = Program Byte Address

3. SA

X

for Sector-Erase; uses A

MS

-A

12

address lines

BA

X

, for Block-Erase; uses A

MS

-A

16

address lines

A

MS

= Most significant address

A

MS

= A

20

for SST39VF1681/1682

4. With A

MS

-A

5

= 0; Sec ID is read with A

4

-A

0

,

SST ID is read with A

4

= 0 (Address range = 00000H to 0000FH),

User ID is read with A

4

= 1 (Address range = 00010H to 0001FH).

Lock Status is read with A

7

-A

0

= 0000FFH. Unlocked: DQ

3

= 1 / Locked: DQ

3

= 0.

5. Valid Byte Addresses for Sec ID are from 000000H-00000FH and 000020H-00002FH.

6. The device does not remain in Software Product ID Mode if powered down.

7. With A

MS

-A

1

=0; SST Manufacturer ID = 00BFH, is read with A

0

= 0,

SST39VF1681 Device ID = C8H, is read with A

0

= 1,

SST39VF1682 Device ID = C9H, is read with A

0

= 1,

A

MS

= Most significant address

A

MS

= A

20

for SST39VF1681/1682

8. Both Software ID Exit operations are equivalent

9. If users never lock after programming, Sec ID can be programmed over the previously unprogrammed bits (data=1) using the Sec ID

mode again (the programmed “0” bits cannot be reversed to “1”).

©2003 Silicon Storage Technology, Inc.

S71243-03-000

11/03

8