Nxp Semiconductors UM10237 User Manual
UM10237_2
© NXP B.V. 2008. All rights reserved.
User manual
Rev. 02 — 19 December 2008
692 of 792
NXP Semiconductors
UM10237
Chapter 30: LPC24XX Flash memory programming firmware
The Flash memory is not accessible during a write or erase operation. IAP commands,
which results in a Flash write/erase operation, use 32 bytes of space in the top portion of
the on-chip RAM for execution. The user program should not be use this space if IAP
Flash programming is permitted in the application.
which results in a Flash write/erase operation, use 32 bytes of space in the top portion of
the on-chip RAM for execution. The user program should not be use this space if IAP
Flash programming is permitted in the application.
10.1 Prepare sector(s) for write operation
This command makes Flash write/erase operation a two step process.
Table 621. IAP Command Summary
IAP Command
Command Code
Described in
Prepare sector(s) for write operation
50
10
Copy RAM to Flash
51
10
Erase sector(s)
52
10
Blank check sector(s)
53
10
Read Part ID
54
10
Read Boot code version
55
10
Compare
56
10
Reinvoke ISP
57
10
Fig 140. IAP parameter passing
COMMAND CODE
PARAMETER 1
PARAMETER 2
PARAMETER n
STATUS CODE
RESULT 1
RESULT 2
RESULT n
command
parameter table
parameter table
command
result table
result table
ARM REGISTER r0
ARM REGISTER r1