M50FLW040AK5P datasheet(3/64 Pages) STMICROELECTRONICS

Part #	M50FLW040AK5P

Description	4-Mbit (5 횞 64 Kbyte blocks 3 횞 16 횞 4 Kbyte sectors) 3-V supply Firmware Hub / low-pin count Flash memory

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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3 / 64 page

M50FLW040A, M50FLW040B

Contents

3/64

3.1.6

Block Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.2

Address/Address Multiplexed (A/A Mux) bus operations . . . . . . . . . . . . . 20

3.2.1

Bus Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.2.2

Bus Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.2.3

Output Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.2.4

Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4

Command interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.0.1

Read Memory Array command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.0.2

Read Status Register command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.0.3

Read Electronic Signature command . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.0.4

Program command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.0.5

Quadruple Byte Program command (A/A Mux interface) . . . . . . . . . . . . 28

4.0.6

Double/Quadruple Byte Program command (FWH mode) . . . . . . . . . . 28

4.0.7

Chip Erase command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.0.8

Block Erase command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.0.9

Sector Erase command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.0.10

Clear Status Register command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4.0.11

Program/Erase Suspend command . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4.0.12

Program/Erase Resume command . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5

Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.1

Program/Erase Controller status (Bit SR7) . . . . . . . . . . . . . . . . . . . . . . . 32

5.2

Erase Suspend status (Bit SR6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.3

Erase status (Bit SR5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5.3.1

Program status (Bit SR4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5.3.2

VPP status (Bit SR3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5.3.3

Program Suspend status (Bit SR2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5.3.4

Block Protection status (Bit SR1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.3.5

Reserved (Bit SR0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

6

Firmware hub/low pin count (FWH/LPC) interface Configuration

Registers 35

6.1

Lock Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6.1.1

Write Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6.1.2

Read Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6.1.3

Lock Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

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