5

REV. 2.6, DEC. 29, 2003

P/N: PM0515

MX29F001T/B

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

RD

RD

Read Silicon ID

4

555H

AAH

2AAH

55H

555H

90H

ADI

DDI

Chip Protect Verify

4

555H

AAH

2AAH

55H

555H

90H

(SA)

00H

X02H

01H

Program

4

555H

AAH

2AAH

55H

555H A0H

PA

PD

Chip Erase

6

555H

AAH

2AAH

55H

555H

80H

555H

AAH

2AAH

55H

555H

10H

Sector Erase

6

555H

AAH

2AAH

55H

555H

80H

555H

AAH

2AAH

55H

SA

30H

Sector Erase Suspend 1

XXXH

B0H

Sector Erase Resume

1

XXXH

30H

Unlock for chip

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.(Refer to

Table 3)

DDI = Data of Device identifier : C2H for manufacture code, 18H/19H 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 A0~A10.

Address bit A11~A16=X=Don't care for all address commands except for Program Address (PA) and Sector

Address (SA). Write Sequence may be initiated with A11~A16 in either state.

4. For chip protect verify operation : If read out data is 01H, it means the chip has been protected. If read out data

is 00H, it means the chip is still not being protected.

COMMAND DEFINITIONS

Device operations are selected by writing specific ad-

dress and data sequences into the command register.

Writing incorrect address and data values or writing

them in the improper sequence will reset the device to

the read mode.

Table 1 defines the valid register

command sequences. Note that the Erase Suspend

(B0H) and Erase Resume (30H) commands are valid

only while the Sector Erase operation is in progress.

Either of the two reset command sequences will reset

the device(when applicable).