6

P/N:PM1200

MX29F400C T/B

REV. 1.0, DEC. 20, 2005

First Bus

Second Bus Third Bus

Fourth Bus

Fifth Bus

Sixth Bus

Command

Bus

Cycle

Cycle

Cycle

Cycle

Cycle

Cycle

Cycle Addr

Data

Addr

Data

Addr

Data

Addr

Data

Addr

Data Addr

Data

Reset

1

XXXH F0H

Read

1

RA

RD

Read Silicon

Word

4

555H AAH

2AAH 55H

555H

90H

ADI

DDI

ID

Byte

4

AAAH AAH

555H 55H

AAAH 90H

ADI

DDI

Sector Protect

Word

4

555H AAH

2AAH 55H

555H

90H

(SA)

XX00H

Verify

x02H XX01H

Byte

4

AAAH AAH

555H 55H

AAAH 90H

(SA)

00H

x04H 01H

Program

Word

4

555H AAH

2AAH 55H

555H

A0H

PA

PD

Byte

4

AAAH AAH

555H 55H

AAAH A0H

PA

PD

Chip Erase

Word

6

555H AAH

2AAH 55H

555H

80H

555H AAH

2AAH 55H

555H 10H

Byte

6

AAAH AAH

555H 55H

AAAH 80H

AAAH AAH

555H

55H

AAAH 10H

Sector Erase

Word

6

555H AAH

2AAH 55H

555H

80H

555H AAH

2AAH 55H

SA

30H

Byte

6

AAAH AAH

555H 55H

AAAH 80H

AAAH AAH

555H

55H

SA

30H

Sector Erase Suspend

1

XXXH B0H

Sector Erase Resume

1

XXXH 30H

Unlock for sector

6

555H AAH

2AAH 55H

555H

80H

555H AAH

2AAH 55H

555H 20H

protect/unprotect

TABLE 1. SOFTWARE COMMAND DEFINITIONS

Note:

1. ADI = Address of Device identifier; A1=0, A0 = 0 for manufacture code,A1=0, A0 = 1 for device code, A2~A17=do not care.

(Refer to table 3)

DDI = Data of Device identifier : C2H for manufacture code, 23H/ABH (x8) and 2223H/22ABH (x16) for device code.

X = X can be VIL or VIH

RA=Address of memory location to be read.

RD=Data to be read at location RA.

2. PA = Address of memory location to be programmed.

PD = Data to be programmed at location PA.

SA = Address to the sector to be erased.

3. The system should generate the following address patterns: 555H or 2AAH to Address A10~A0 in word mode/AAAH or

555H to Address A10~A-1 in byte mode.

Address bit A11~A17=X=Don't care for all address commands except for Program Address (PA) and Sector

Address (SA). Write Sequence may be initiated with A11~A17 in either state.

4. For Sector Protect Verify operation:If read out data is 01H, it means the sector has been protected. If read out data is 00H, it

means the sector is still not being protected.