M50FW040N5TG datasheet(3/53 Pages) STMICROELECTRONICS

Part #	M50FW040N5TG

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

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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3 / 53 page

M50FW040

Contents

3/53

3.1.6

Block Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.2

Address/Address multiplexed (A/A Mux) bus operations . . . . . . . . . . . . . 19

3.2.1

Bus Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.2.2

Bus Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.2.3

Output Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.2.4

Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4

Command interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.1

Read Memory Array command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.2

Read Status Register command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.3

Read Electronic Signature command . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.4

Program command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.5

Erase command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.6

Clear Status Register command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.7

Program/Erase Suspend command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.8

Program/Erase Resume command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5

Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.0.1

Program/Erase Controller status (Bit 7) . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.0.2

Erase Suspend status (Bit 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.0.3

Erase status (Bit 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.0.4

Program status (Bit 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.0.5

VPP status (Bit 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.0.6

Program Suspend status (Bit 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.0.7

Block Protection status (Bit 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.0.8

Reserved (Bit 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

6

Firmware hub (FWH) interface Configuration Registers . . . . . . . . . . . 30

6.1

Lock Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.1.1

Write Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.1.2

Read Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.1.3

Lock Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.2

Firmware Hub (FWH) General-Purpose Input Register . . . . . . . . . . . . . . 31

6.3

Manufacturer Code Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.4

Device Code Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.5

Firmware Hub (FWH) General-Purpose Input Register . . . . . . . . . . . . . . 31

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