5

P/N:PM0556

REV. 0.6, DEC. 09, 1998

MX29F022T/B

Table 1 Softwave Command Definitions

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/Read

1

XXXH F0H

Reset/Read

4

555H

AAH 2AAH 55H

555H F0H

RA

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

x02

01H

Porgram

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

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, 36H/37H 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~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 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.

INDEX