UM1635 datasheet(20/42 Pages) STMICROELECTRONICS

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API specification

UM1635

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DocID024604 Rev 2

2.6.7

FlashSuspend()

Description

This function checks if there is any high voltage operation, erase or program, in progress on

the C90FL2 module and if the operation can be suspended. This function suspends the

ongoing operation if it can be suspended.

Prototype

UINT32 FlashSuspend (PSSD_CONFIG pSSDConfig,

UINT8 *suspendState,

UINT8 *suspendFlag);

Arguments

Return values

Troubleshooting

None.

Comments

After calling ‘FlashSuspend()’, read is allowed on both main array space and shadow row

without any Read-While-Write error. But data read from the blocks targeted for programming

or erasing is indeterminate even if the operation is suspended.

This function should be used together with ‘FlashResume()’. The suspendFlag returned by

‘FlashSuspend()’ determine whether ‘FlashResume()’ needs to be called or not. If

suspendFlag is TRUE, ‘FlashResume()’ must be called symmetrically to resume the

suspended operation.

Table 26 defines and describes various suspend states and associated suspend codes.

Table 24. Arguments for FlashSuspend()

Argument

Description

Range

pSSDConfig

Pointer to the SSD

Configuration Structure.

The values in this structure are chip-dependent.

Please refer to Section 2.3 for more details.

suspendState

Indicate the suspend state

of C90FL2 module after the

function being called.

All return values are enumerated in Table 27.

suspendFlag

Return whether the

suspended operation, if

there is any, is suspended

by this call.

TRUE: the operation is suspended by this call;

FALSE: either no operation to be suspended or the

operation is suspended not by this call.

Table 25. Return values for FlashSuspend()

Type

Description

Possible values

UINT32

Successful completion.

C90FL_OK

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