M50FW040K5P 데이터 시트보기 (PDF) - STMicroelectronics

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M50FW040K5P

4-Mbit (512 Kb x8, uniform block) 3-V supply firmware hub Flash memory

STMicroelectronics 

M50FW040

Command interface

Table 7. Commands(1)

Bus Write operations

Command

1st

2nd

Address

Data

Address

Data

Read Memory Array(2)

1

X

FFh

Read Status Register(3)

1

X

70h

1

X

90h

Read Electronic Signature(4)

1

X

98h

Program(5)

2

X

2

X

Erase(5)

2

X

Clear Status Register(6)

1

X

Program/Erase Suspend(7) 1

X

Program/Erase Resume(8) 1

X

40h

PA

PD

10h

PA

PD

20h

BA

D0h

50h

B0h

D0h

1

X

00h

1

X

01h

Invalid/Reserved(9)

1

X

60h

1

X

2Fh

1

X

C0h

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

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

command is issued.

3. Read Status Register. After a Read Status Register command, read the Status Register as normal until

another command is issued.

4. Read Electronic Signature. After a Read Electronic Signature command, read Manufacturer Code,

Device Code until another command is issued.

5. Erase, Program. After these commands read the Status Register until the command completes and

another command is issued.

6. Clear Status Register. After the Clear Status Register command bits 1, 3, 4 and 5 in the Status Register

are reset to ‘0’

7. 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.

8. 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.

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

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