S29GL032A datasheet(57/95 Pages) SPANSION

57 / 95 page

September 10, 2007 S29GL-A_00_A11

S29GL-A

Data

She e t

Figure 9.2 Program Operation

Note

See Table 10.2 on page 61 and Table 10.1 on page 62 for program command sequence.

9.5

Program Suspend/Program Resume Command Sequence

The Program Suspend command allows the system to interrupt a programming operation or a Write to Buffer

programming operation so that data can be read from any non-suspended sector. When the Program

Suspend command is written during a programming process, the device halts the program operation within

μs maximum (5μs typical) and updates the status bits. Addresses are not required when writing the

Program Suspend command.

After the programming operation is suspended, the system can read array data from any non-suspended

sector. The Program Suspend command may also be issued during a programming operation while an erase

is suspended. In this case, data may be read from any addresses not in Erase Suspend or Program Suspend.

If a read is needed from the Secured Silicon Sector area (One-time Program area), then user must use the

proper command sequences to enter and exit this region. Note that the Secured Silicon Sector, autoselect,

and CFI functions are unavailable when a program operation is in progress.

The system may also write the autoselect command sequence when the device is in the Program Suspend

mode. The system can read as many autoselect codes as required. When the device exits the autoselect

mode, the device reverts to the Program Suspend mode, and is ready for another valid operation. See

Autoselect Command Sequence on page 53 for more information.

After the Program Resume command is written, the device reverts to programming. The system can

determine the status of the program operation using the DQ7 or DQ6 status bits, just as in the standard

program operation. See Write Operation Status on page 63 for more information.

The system must write the Program Resume command (address bits are don’t care) to exit the Program

Suspend mode and continue the programming operation. Further writes of the Resume command are

ignored. Another Program Suspend command can be written after the device resumes programming.

START

Write Program

Command Sequence

Data Poll

from System

Verify Data?

Yes

Last Address?

Yes

Programming

Completed

Increment Address

Embedded

Program

algorithm

in progress

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