M50FW040 データシートの表示（PDF） - STMicroelectronics

部品番号

コンポーネント説明

メーカー

M50FW040

4 Mbit (512Kb x8, Uniform Block) 3V Supply Firmware Hub Flash Memory

STMicroelectronics 

M50FW040

Table 7. Commands

Bus Write Operations

Command

1st

2nd

Address

Data

Address

Data

Read Memory Array

1

X

FFh

Read Status Register

1

X

70h

1

X

90h

Read Electronic Signature

1

X

98h

Program

2

X

40h

PA

PD

2

X

10h

PA

PD

Erase

2

X

20h

BA

D0h

Clear Status Register

1

X

50h

Program/Erase Suspend

1

X

B0h

Program/Erase Resume

1

X

D0h

1

X

00h

1

X

01h

Invalid/Reserved

1

X

60h

1

X

2Fh

1

X

C0h

Note: X Don’t Care, PA Program Address, PD Program Data, BA Any address in the Block.

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.

Erase, Program. After these commands 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.

16/41

Share Link: