UM10462 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved.
User manual Rev. 5.5 — 21 December 2016 401 of 523
NXP Semiconductors
UM10462
Chapter 20: LPC11U3x/2x/1x Flash programming firmware
20.13 ISP commands
The following commands are accepted by the ISP command handler. Detailed status
codes are supported for each command. The command handler sends the return code
INVALID_COMMAND when an undefined command is received. Commands and return
codes are in ASCII format.
CMD_SUCCESS is sent by ISP command handler only when received ISP command has
been completely executed and the new ISP command can be given by the host.
Exceptions from this rule are "Set Baud Rate", "Write to RAM", "Read Memory", and "Go"
commands.
20.13.1 Unlock <Unlock code>
Table 365. ISP command summary
ISP Command Usage Described in
Unlock U <Unlock Code> Table 366
Set Baud Rate B <Baud Rate> <stop bit> Table 367
Echo A <setting> Table 368
Write to RAM W <start address> <number of bytes> Table 369
Read Memory
R <address>
<number of bytes>
Table 370Prepare sector(s) for
write operation
P <start sector number> <end sector number> Table 371
Copy RAM to flash C <Flash address> <RAM address> <number of bytes> Table 372
Go
G <address> <Mode>
Table 373Erase sector(s) E <start sector number> <end sector number> Table 374
Blank check sector(s) I <start sector number> <end sector number> Table 375
Read Part ID J Table 376
Read Boot code version K Table 378
Compare
M <address1> <address2> <number of bytes>
Table 379ReadUID N Table 380
Table 366. ISP Unlock command
Command U
Input Unlock code: 23130
10
Return Code CMD_SUCCESS |
INVALID_CODE |
PARAM_ERROR
Description This command is used to unlock Flash Write, Erase, and Go commands.
Example "U 23130<CR><LF>" unlocks the Flash Write/Erase & Go commands.
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