M58MR032-ZCT データシートの表示（PDF） - STMicroelectronics

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M58MR032-ZCT

32 Mbit (2Mb x16, Mux I/O, Dual Bank, Burst) 1.8V Supply Flash Memory

STMicroelectronics 

M58MR032C, M58MR032D

Figure 19. Block Erase Flowchart and Pseudo Code

Start

Write 20h

Command

Write Block Address

& D0h Command

Read Status

Register

NO

b7 = 1

YES

NO

b3 = 0

YES

NO

b4, b5 = 0

YES

NO

b5 = 0

YES

NO

b1 = 0

YES

End

NO

Suspend

YES

Suspend

Loop

VPP Invalid

Error (1)

Command

Sequence Error (1)

Erase Error (1)

Erase to Protected

Block Error (1)

EE instruction:

– write 20h command

– write Block Address (A12-A20) &

command D0h

(memory enters read status state after

the EE instruction)

do:

– read status register (E or G must be

toggled) if PES instruction given execute

suspend erase loop

while b7 = 1

If b3 = 1, VPP invalid error:

– error handler

If b4, b5 = 1, Command sequence error:

– error handler

If b5 = 1, Erase error:

– error handler

If b1 = 1, Erase to protected block error:

– error handler

AI90037

44/52

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