M28W320CT09GB1T Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

M28W320CT09GB1T

32 Mbit (2Mb x16, Boot Block) Low Voltage Flash Memory

STMicroelectronics 

Figure 11. Program Flowchart and Pseudo Code

M28W320CT, M28W320CB

Start

Write 40h or 10h

Command

Write Address

& Data

Read Status

Register

NO

Suspend

YES

NO

b7 = 1

YES

Suspend

Loop

NO

b3 = 0

VPP Invalid

Error (1, 2)

YES

NO

b4 = 0

Program

Error (1, 2)

YES

b1 = 0

NO

Program to Protected

Block Error (1, 2)

YES

End

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

If b1 = 1, Program to protected block error:

– error handler

AI03538

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.

29/42

Share Link: