UM1634 datasheet(22/43 Pages) STMICROELECTRONICS

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API specification

UM1634

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DocID024601 Rev 3

Assumptions

It assumes that the Flash block is initialized using a ‘FlashInit()’ API.

3.6.7

FlashSuspend()

Description

The 'FlashSuspend()' API checks if there is any high voltage operation, erase or program, in

progress on the C90FL 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,

BOOL *suspendFlag);

Arguments

Return values

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 21. 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 3.3 for more details.

suspendState

Indicate the suspend state

of C90FL module after the

function being called.

All return values are enumerated inTable 24.

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 22. Return values for FlashSuspend()

Return Values

Possible Causes

Solution

C90FL_OK

Successful completion.

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