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PF28F1602C3TD70

Intel® Advanced+ Boot Block Flash Memory (C3)

Intel 

C3 SCSP Flash Memory

3.5.1

Note:

The status register indicates programming status:

• While the program sequence executes, status bit 7 has a 0 value.

• To poll the status register, toggle either F-CE# or F-OE#.

While programming, the only valid commands are:

• Read Status Register

• Program Suspend

• Program Resume

1. When programming is complete, check the program status bits.

— If the programming operation was unsuccessful, status register but SR.4 is set to indicate a

program failure.

— If SR.3 is set, then F-VPP was not within acceptable limits, and the WSM did not execute

the program command.

— If SR.1 is set, a program operation was attempted on a locked block and the operation

aborted.

2. Clear the status register before attempting the next operation.

Any CUI instruction can follow after programming is completed.

3. To prevent inadvertent status register reads, reset the CUI to read array mode.

Suspending and Resuming Program (B0h/D0h)

The Program Suspend command halts an in-progress program operation, so that data can be read

from other locations of memory.

1. After the programming process starts, write the Program Suspend command to the CUI.

— This command requests that the WSM suspend the program sequence (at predetermined

points in the program algorithm).

— The flash memory device continues to output status register data after the Program

Suspend command is written.

2. Poll status register bits SR.7 and SR.2 to determine when the program operation has been

suspended (both are set to 1).

tWHRH1/tEHRH1 specifies the program suspend latency.

A Read Array command can be written to the CUI to read data from any block other than the

suspended block. The only other valid commands, while program is suspended, are:

• Read Status Register

• Read Configuration

• CFI Query

• Program Resume.

Datasheet

Intel® Advanced+ Boot Block Flash Memory (C3) SCSP Family

Order Number: 252636, Revision: 004

26 Aug 2005

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