M58LW064 datasheet(43/53 Pages) STMICROELECTRONICS

Part #	M58LW064

Description	64 Mbit x16 and x16/x32, Block Erase Low Voltage Flash Memories

PDF	53 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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M58LW064A, M58LW064B

Figure 22. Erase Flowchart and Pseudo Code

Note: 1. If an error is found, the Status Register must be cleared (CLRS instruction) before further P/E.C. operations.

Write 20h

Command

AI00613B

Start

Write Block Address

& D0h Command

Read Status

YES

b7 = 1

YES

b3 = 0

b4, b5 = 0

VPP Invalid

Error (1)

Command

Sequence Error

EE instruction:

– write 20h command

– write Block Address

(A12-A17) & command D0h

(memory enters read status

state after the EE instruction)

do:

– read status register

(E or G must be toggled)

if EE instruction 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

YES

b5 = 0

Erase

Error (1)

YES

Suspend

Loop

If b5 = 1, Erase error:

– error handler

YES

End

YES

b1 = 0

Erase to Protected

Block Error

If b1 = 1, Erase to Protected Block Error:

– error handler

M58LW064 Datasheet(PDF) 43 Page - STMicroelectronics

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