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M50LPW041

Table 12. Commands

Read Memory Array. After a Read Memory Array command, read the memory as normal until another command is issued.

Read Status Register. After a Read Status Register command, read the Status Register as normal until another command is issued.

Read Electronic Signature. After a Read Electronic Signature command, read Manufacturer Code, Device Code until another com-

mand is issued.

Block Erase, Program. After these commands read the Status Register until the command completes and another command is is-

sued.

differing only for address bit A0 and A1. After this command read the Status Register until the command completes and another com-

mand is issued.

Chip Erase. This command is only valid in A/A Mux mode. After this command read the Status Register until the command completes

and another command is issued.

Clear Status Register. After the Clear Status Register command bits 1, 3, 4 and 5 in the Status Register are reset to ‘0’.

Program/Erase Suspend. After the Program/Erase Suspend command has been accepted, issue Read Memory Array, Read Status

Register, Program (during Erase suspend) and Program/Erase resume commands.

Program/Erase Resume. After the Program/Erase Resume command the suspended Program/Erase operation resumes, read the

Status Register until the Program/Erase Controller completes and the memory returns to Read Mode.

Invalid/Reserved. Do not use Invalid or Reserved commands.

Command

Bus Write Operations

1st

2nd

3rd

4th

5th

Addr

Data

Addr

Data

Addr

Data

Addr

Data

Addr

Data

Read Memory Array

1

X

FFh

Read Status Register

1

X

70h

Read Electronic Signature

1X

90h

1X

98h

Program

2X

40h

PA

PD

2X

10h

PA

PD

Quadruple Byte Program

5

X

30h

PD

PD

PD

PD

Chip Erase

2

X

80h

X

10h

Block Erase

2

X

20h

BA

D0h

Clear Status Register

1

X

50h

Program/Erase Suspend

1

X

B0h

Program/Erase Resume

1

X

D0h

Invalid/Reserved

1X

00h

1X

01h

1X

60h

1X

2Fh

1X

C0h