M59DR032EA datasheet(19/43 Pages) STMICROELECTRONICS

Part #	M59DR032EA

Description	32 Mbit (2Mb x 16, Dual Bank, Page ) 1.8V Supply Flash Memory

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M59DR032EA, M59DR032EB

Table 12. Status Register Bits

Note: 1. Logic level ’1’ is High, ’0’ is Low. -0-1-0-0-0-1-1-1-0- represent bit value in successive read operations.

2. In case of double word program DQ7 refers to the last word input.

DQ

Name

Logic Level

Definition

Note

7

Data

Polling

’1’

Erase complete or erase block

in Erase Suspend.

Indicates the P/E.C. status, check

during Program or Erase, and on

completion before checking bits DQ5

for Program or Erase success.

’0’

Erase in progress

DQ

Program complete or data of

non erase block during Erase

Suspend.

DQ

Program in progress(2)

6

Toggle Bit

’-1-0-1-0-1-0-1-’

Erase or Program in progress

Successive reads output

complementary data on DQ6 while

Programming or Erase operations are

in progress. DQ6 remains at constant

level when P/E.C. operations are

completed or Erase Suspend is

acknowledged.

DQ

Program complete

’-1-1-1-1-1-1-1-’

Erase complete or Erase

Suspend on currently addressed

block

5

Error Bit

’1’

Program or Erase Error

This bit is set to ’1’ in the case of

Programming or Erase failure.

’0’

Program or Erase in progress

4

Reserved

3

Erase Time

Bit

’1’

Erase Timeout Period Expired

P/E.C. Erase operation has started.

Only possible command entry is Erase

Suspend

’0’

Erase Timeout Period in

progress

An additional block to be erased in

parallel can be entered to the P/E.C

provided that it belongs to the same

bank

2

Toggle Bit

’-1-0-1-0-1-0-1-’

Erase Suspend read in the

Erase Suspended Block.

Erase Error due to the currently

addressed block (when DQ5 =

’1’).

Indicates the erase status and allows

to identify the erased block.

1

Program in progress or Erase

complete.

DQ

Erase Suspend read on non

Erase Suspend block.

1

Reserved

0

Reserved

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