UM10375 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
User manual Rev. 3 — 14 June 2011 338 of 368
NXP Semiconductors
UM10375
Chapter 21: LPC13xx Flash memory programming firmware
21.14.2 Copy RAM to flash
See Section 21.13.7 for limitations on the write-to-flash process.
Table 335. IAP Prepare sector(s) for write operation command
Command Prepare sector(s) for write operation
Input Command code: 50 (decimal)
Param0: Start Sector Number
Param1: End Sector Number (should be greater than or equal to start sector
number).
Return Code CMD_SUCCESS |
BUSY |
INVALID_SECTOR
Result None
Description This command must be executed before executing "Copy RAM to flash" or "Erase
Sector(s)" command. Successful execution of the "Copy RAM to flash" or "Erase
Sector(s)" command causes relevant sectors to be protected again. The boot
sector can not be prepared by this command. To prepare a single sector use the
same "Start" and "End" sector numbers.
Table 336. IAP Copy RAM to flash command
Command Copy RAM to flash
Input Command code: 51 (decimal)
Param0(DST): Destination flash address where data bytes are to be written. This
address should be a 256 byte boundary.
Param1(SRC): Source RAM address from which data bytes are to be read. This
address should be a word boundary.
Param2: Number of bytes to be written. Should be 256 | 512 | 1024 | 4096.
Param3: System Clock Frequency (CCLK) in kHz.
Return Code CMD_SUCCESS |
SRC_ADDR_ERROR (Address not a word boundary) |
DST_ADDR_ERROR (Address not on correct boundary) |
SRC_ADDR_NOT_MAPPED |
DST_ADDR_NOT_MAPPED |
COUNT_ERROR (Byte count is not 256 | 512 | 1024 | 4096) |
SECTOR_NOT_PREPARED_FOR_WRITE_OPERATION |
BUSY
Result None
Description This command is used to program the flash memory. The affected sectors should
be prepared first by calling "Prepare Sector for Write Operation" command. The
affected sectors are automatically protected again once the copy command is
successfully executed. The boot sector can not be written by this command. Also
see Section 21.6
for the number of bytes that can be written.
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