M50LPW041

28/37

Figure 14. Program Flowchart and Pseudo Code

Note: 1. A Status check of b1 (Protected Block) 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

AI06818

Start

Write Address

& Data

Read Status

Register

YES

NO

b7 = 1

NO

b4 = 0

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 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