M50LPW040K1T datasheet(27/36 Pages) STMICROELECTRONICS

No de pièce	M50LPW040K1T

Description	4 Mbit 512Kb x8, Uniform Block 3V Supply Low Pin Count Flash Memory

PDF	36 Pages

Scroll/Zoom	100%

Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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27 / 36 page

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M50LPW040

Figure 14. Program Flowchart and Pseudo Code

Note: 1. A Status check of b1 (Protected Block), b3 (VPP invalid) and b4 (Program Error) can be made after each Program operation by

following the correct command sequence.

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

Write 40h or 10h

AI04433

Start

Write Address

& Data

Read Status

YES

b7 = 1

YES

b3 = 0

b4 = 0

VPP Invalid

Error (1, 2)

Program

Error (1, 2)

Program command:

– write 40h or 10h

– write Address & Data

(memory enters read status state after

the Program command)

do:

–read Status Register if Program/Erase

Suspend command given execute

suspend program loop

while b7 = 1

If b3 = 1, VPP invalid error:

– error handler

If b4 = 1, Program error:

– error handler

YES

End

YES

b1 = 0

Program to Protected

Block Error (1, 2)

If b1 = 1, Program to protected block error:

– error handler

Suspend

Loop

YES

LPC

Interface

Only

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