MCP MEMORY

K5A3x80YT(B)C

Revision 0.0

November 2002

- 8 -

Preliminary

Flash MEMORY COMMAND DEFINITIONS

Flash memory operates by selecting and executing its operational modes. Each operational mode has its own command set. In order

to select a certain mode, a proper command with specific address and data sequences must be written into the command register.

Writing incorrect information which include address and data or writing an improper command will reset the device to the read mode.

The defined valid register command sequences are stated in Table 5. Note that Erase Suspend (B0H) and Erase Resume (30H)

commands are valid only while the Block Erase Operation is in progress.

Table 5. Command Sequences

Command Sequence

Cycle

1st Cycle

2nd Cycle

3rd Cycle

4th Cycle

5th Cycle

6th Cycle

Word

Byte

Word

Byte

Word

Byte

Word

Byte

Word

Byte

Word

Byte

Read

Addr

1

RA

Data

RD

Reset

Addr

1

XXXH

Data

F0H

Autoselect

Manufacturer

ID (2,3)

Addr

4

555H

AAAH

2AAH

555H

DA/

555H

DA/

AAAH

DA/

X00H

DA/

X00H

Data

AAH

55H

90H

ECH

Autoselect

Device Code

(2,3)

Addr

4

555H

AAAH

2AAH

555H

DA/

555H

DA/

AAAH

DA/

X01H

DA/

X02H

Data

AAH

55H

90H

(See Table 6)

Autoselect

Block Group

Protect Verify

(2,3)

Addr

4

555H

AAAH

2AAH

555H

DA/

555H

DA/

AAAH

BA /

X02H

BA/

X04H

Data

AAH

55H

90H

(See Table 6)

Auto Select

Secode Block

Factory Protect

Verify (2,3)

Addr

4

555H

AAAH

2AAH

555H

DA/

555H

DA/

AAAH

DA /

X03H

DA/

X06H

Data

AAH

55H

90H

(See Table 6)

Enter Secode

Block Region

Addr

3

555H

AAAH

2AAH

555H

555H

AAAH

Data

AAH

55H

88H

Exit

Secode

Block

Region

Addr

4

555H

AAAH

2AAH

555H

555H

AAAH

XXXH

Data

AAH

55H

90H

00H

Program

Addr

4

555H

AAAH

2AAH

555H

555H

AAAH

PA

Data

AAH

55H

A0H

PD

Unlock Bypass

Addr

3

555H

AAAH

2AAH

555H

555H

AAAH

Data

AAH

55H

20H

Unlock Bypass

Program

Addr

2

XXXH

PA

Data

A0H

PD

Unlock Bypass

Reset

Addr

2

XXXH

XXXH

Data

90H

00H

Chip Erase

Addr

6

555H

AAAH

2AAH

555H

555H

AAAH

555H

AAAH

2AAH

555H

555H

AAAH

Data

AAH

55H

80H

AAH

55H

10H

Block Erase

Addr

6

555H

AAAH

2AAH

555H

555H

AAAH

555H

AAAH

2AAH

555H

BA

Data

AAH

55H

80H

AAH

55H

30H

Block Erase

Suspend (4, 5)

Addr

1

XXXH

Data

B0H

Block Erase

Resume

Addr

1

XXXH

Data

30H