M58CR032D datasheet(30/63 Pages) STMICROELECTRONICS

Part #	M58CR032D

Description	32 Mbit 2Mb x 16, Dual Bank, Burst 1.8V Supply Flash Memory

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been issued and the memory is waiting for a Pro-

gram/Erase Resume command. The Program

Suspend Status should only be considered valid

when the Program/Erase Controller Status bit is

High (Program/Erase Controller inactive). Bit 2 is

set within 5µs of the Program/Erase Suspend

command being issued 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 B, Flowcharts and

Pseudo Codes, for using the Status Register.

Table 15. Status Register Bits

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

Bit

Name

Logic Level

Definition

7

P/E.C. Status

’1’

Ready

’0’

Busy

6

Erase Suspend Status

’1’

Suspended

’0’

In progress or Completed

5

Erase Status

’1’

Erase Error

’0’

Erase Success

4

Program Status

’1’

Program Error

’0’

Program Success

3

VPP Status

’1’

VPP Invalid, Abort

’0’

VPP OK

2

Program Suspend Status

’1’

Suspended

’0’

In Progress or Completed

1

Block Protection Status

’1’

Program/Erase on protected Block, Abort

’0’

No operation to protected blocks

0

Reserved

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