M50LPW002

30/39

Figure 14. Program Flowchart and Pseudo Code

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

Register

YES

NO

b7 = 1

YES

NO

b3 = 0

NO

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

NO

b1 = 0

Program to Protected

Block Error (1, 2)

If b1 = 1, Program to protected block error:

– error handler

Suspend

Suspend

Loop

NO

YES

LPC

Interface

Only