M36W432BG70ZA1 データシートの表示（PDF） - STMicroelectronics

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M36W432BG70ZA1

32 Mbit (2Mb x16, Boot Block) Flash Memory and 4 Mbit (256Kb x16) SRAM, Multiple Memory Product

STMicroelectronics 

M36W432TG, M36W432BG

should only be considered valid when the Pro-

gram/Erase Controller Status bit is High (Program/

Erase Controller inactive). Bit 2 is set within 5µs of

the Program/Erase Suspend command being is-

sued therefore the memory may still complete the

operation rather than entering the Suspend mode.

When a Program/Erase Resume command is is-

sued the Program Suspend Status bit returns Low.

Block Protection Status (Bit 1). The Block Pro-

tection Status bit can be used to identify if a Pro-

gram or Erase operation has tried to modify the

contents of a locked block.

When the Block Protection Status bit is High (set

to ‘1’), a Program or Erase operation has been at-

tempted on a locked block.

Once set High, the Block Protection Status bit can

only be reset Low by a Clear Status Register com-

mand or a hardware reset. If set High it should be

reset before a new command is issued, otherwise

the new command will appear to fail.

Reserved (Bit 0). Bit 0 of the Status Register is

reserved. Its value must be masked.

Note: Refer to Appendix C, Flowcharts and

Pseudo Codes, for using the Status Register.

Table 18. Flash Status Register Bits

Bit

Name

7

P/E.C. Status

6

Erase Suspend Status

5

Erase Status

4

Program Status

3

VPPF Status

2

Program Suspend Status

1

Block Protection Status

0

Reserved

Note: Logic level ’1’ is High, ’0’ is Low.

Logic Level

’1’

’0’

’1’

’0’

’1’

’0’

’1’

’0’

’1’

’0’

’1’

’0’

’1’

’0’

Definition

Ready

Busy

Suspended

In progress or Completed

Erase Error

Erase Success

Program Error

Program Success

VPPF Invalid, Abort

VPPF OK

Suspended

In Progress or Completed

Program/Erase on protected Block, Abort

No operation to protected blocks

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