M28W320CB datasheet(29/42 Pages) STMICROELECTRONICS

No. de pieza	M28W320CB

Descripción Electrónicos	32 Mbit (2Mb x16, Boot Block) 3V Supply Flash Memory

PDF	42 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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M28W320CT, M28W320CB

Figure 11. Program Flowchart and Pseudo Code

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

a sequence.

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

Write 40h or 10h

Command

AI03538

Start

Write Address

& Data

Read Status

YES

b7 = 1

YES

b3 = 0

b4 = 0

VPP Invalid

Error (1, 2)

Program

Error (1, 2)

Program instruction:

– write 40h or 10h command

– write Address & Data

(memory enters read status state after

the Program instruction)

do:

– read status register (E or G must be

toggled) if PES instruction 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

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