UM1620 datasheet(17/41 Pages) STMICROELECTRONICS

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UM1620

API specification

Comments

If the selected main array blocks or the shadow row is locked for programming, those blocks

or the shadow row are not programmed, and ‘FlashProgram()’ still returns C90FL_OK. User

needs to verify the programmed data with ‘ProgramVerify()’ function.

It is impossible to program any Flash block or shadow row when a program or erase

operation is already in progress on C90FL module. ‘FlashProgram()’ returns

C90FL_ERROR_BUSY when doing so. However, user can use the ‘FlashSuspend()’

function to suspend an on-going erase operation on one block to perform a program

operation on another block. The user has begun an erase operation on the main array or

shadow row, it may be suspended to program on both main array and shadow row.

It is unsafe to read the data from the Flash partitions having one or more blocks being

programmed when ‘FlashProgram()’ is running. Otherwise, it causes a Read-While-Write

error.

Assumptions

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

2.6.5

ProgramVerify()

Description

This function checks if a programmed Flash range matches the corresponding source data

buffer. In case of mismatch, the failed address, destination value and source value are

saved and relevant error code is returned.

Prototype

UINT32 ProgramVerify (PSSD_CONFIG pSSDConfig,

UINT32 dest,

UINT32 size,

UINT32 source,

UINT32 *pFailAddress,

UINT64 *pFailData,

UINT64 *pFailSource,

void (*CallBack)(void));

Arguments

Table 18. Arguments for ProgramVerify()

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.

Dest

Destination address to be

verified in Flash memory.

Any accessible address aligned on double word

boundary in main array or shadow row.

Size

Size, in byte, of the Flash

region to verify.

If size = 0, C90FL_OK is returned. Its combination

with dest should fall within either main array or

shadow row.

Source

Verify source buffer address. This address must reside on word boundary.

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