M28W160CT datasheet(19/50 Pages) NUMONYX

Part #	M28W160CT

Description	16 Mbit (1Mb x16, Boot Block) 3V Supply Flash Memory

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Manufacturer	NUMONYX [Numonyx B.V]

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M28W160CT, M28W160CB

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 11. 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

5Erase 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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