Conversion Guide: P33 130nm to 65nm

Application Note

Sep 2008

12

Order Number: 320005-04

5.3

Blank Check

Blank Check is used to confirm whether a main-array block is completely erased. A

Blank Check operation is performed one block at a time, and cannot be used during

Program Suspend or Erase Suspend.

To use Blank Check, issue the Blank Check setup command then the confirm command.

The addressed partition is automatically changed to Read Status Register mode, which

remains in effect until another read-mode command is issued. During a blank check

operation, the Status Register indicates a busy status (SR7 = 0). Upon completion, the

Status Register indicates a ready status (SR7 = 1).

The Status Register should be checked for any errors, and then cleared. If the Blank

Check operation fails, which means the block is not completely erased, the Status

Register will indicate a Blank Check error (SR[7,5] = 1).

Table 7:

Read Configuration Register Differences

Register

Field

Value

P33 130nm

P33 65nm

Latency

Count

1000 =Code 8

1001 = Code 9

1010 = Code 10

1011 = Code 11

1100 = Code 12

NA

Available

WAIT

Polarity

0 =WAIT signal is active low

1 =WAIT signal is active high

Default High

Default Low

Data Hold

0 =Data held for a 1-clock data cycle

1 =Data held for a 2-clock data cycle

Available

1-clock cycle only

Burst

Sequence

0 =Reserved

1 =Linear

Intel Burst Order

Linear Burst Order

Linear Burst Order

Clock Edge

0 = Falling edge

1 = Rising edge

Available

Available

Burst Wrap

0 =Wrap; Burst accesses wrap within burst length set by BL[2:0]

1 =No Wrap; Burst accesses do not wrap within burst length

Available

Available

Burst

Length

001 =4-word burst

010 =8-word burst

011 =16-word burst

111 =Continuous-word burst

Available

Available