M30LW128D datasheet(48/57 Pages) STMICROELECTRONICS

Part #	M30LW128D

Description	128 Mbit (two 64Mbit, x8/x16, Uniform Block, Flash Memories) 3V Supply, Multiple Memory Product

PDF	57 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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48 / 57 page

M30LW128D

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Figure 21. Erase Flowchart and Pseudo Code

Note: 1. The Read Status Register command must be issued to the same address as the Block Erase command.

2. If an error is found, the Status Register must be cleared (Clear Status Register Command) before further Program or Erase oper-

ations.

Write 20h to

Block Address

AI07515

Start

Write D0h to

Block Address

Read Status

YES

b7 = 1

YES

b3 = 0

b4, b5 = 0

VPEN Invalid

Error (2)

Command

Sequence Error

Erase command:

– write 20h to Block Address

– write D0h to Block Address

(A12-A17)

(memory enters read Status

do:

– read status register

– if Program/Erase Suspend command

given execute suspend erase loop

while b7 = 1

If b3 = 1, VPEN invalid error:

– error handler

If b4, b5 = 1, Command Sequence error:

– error handler

YES

b5 = 0

Erase

Error (2)

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

M30LW128D Datasheet(PDF) 48 Page - STMicroelectronics

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