M50FW016N1G View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M50FW016N1G

16 Mbit (2Mb x8, Uniform Block) 3V Supply Firmware Hub Flash Memory

STMicroelectronics 

M50FW016

Figure 21. Block Erase Flowchart and Pseudo Code

Start

Write 20h

Write Block Address

& D0h

FWH

Interface

Only

Read Status

Register

NO

b7 = 1

YES

NO

b3 = 0

YES

NO

b4, b5 = 0

YES

NO

b5 = 0

YES

NO

b1 = 0

YES

End

NO

Suspend

YES

Suspend

Loop

VPP Invalid

Error (1)

Command

Sequence Error (1)

Erase Error (1)

Erase to Protected

Block Error (1)

Block Erase command:

– write 20h

– write Block Address & D0h

(memory enters read Status Register after

the Block Erase command)

do:

– read Status Register

– if Program/Erase Suspend command

given execute suspend erase loop

while b7 = 1

If b3 = 1, VPP invalid error:

– error handler

If b4, b5 = 1, Command sequence error:

– error handler

If b5 = 1, Erase error:

– error handler

If b1 = 1, Erase to protected block error:

– error handler

AI04196

Note: 1. If an error is found, the Status Register must be cleared before further Program/Erase Controller operations.

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