UM11029
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© NXP B.V. 2017. All rights reserved.
User manual
Rev. 1.0 — 16 June 2017
28 of 515
NXP Semiconductors
UM11029
Chapter 5: LPC84x ISP and IAP
5.5.1 Unlock
5.5.2 Set Baud Rate
Erase sector(s)
yes; sector 0 can only be erased when all
sectors are erased.
yes; all sectors only n/a
Erase page(s)
yes; page 0 can only be erased when all
pages are erased (not recommended, use
Erase Sector).
yes; all pages only
n/a
Blank check sectors
no
no
n/a
Read Part ID
yes
yes
n/a
Read Boot code version
yes
yes
n/a
Compare
no
no
n/a
ReadUID
yes
yes
n/a
Read CRC
no
no
n/a
Read flash signature
yes (full range of the flash only)
no
n/a
Read/Write FAIM page
yes
yes
n/a
Table 16.
ISP commands allowed for different CRP levels
ISP command
CRP1
CRP2
CRP3 (no entry in
ISP mode allowed)
Table 17.
USART 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.
Table 18.
USART ISP Set Baud Rate command
Command
B
Input
Baud Rate, FAIM configuration dependant: 9600 | 19200 | 38400 | 57600 | 115200 | 230400 | 460800
Stop bit: 1 | 2
Return Code
CMD_SUCCESS |
INVALID_BAUD_RATE |
INVALID_STOP_BIT |
PARAM_ERROR
Description
This command is used to change the baud rate. The new baud rate is effective after the command handler
sends the CMD_SUCCESS return code.
Example
"B 57600 1<CR><LF>" sets the serial port to baud rate 57600 bps and 1 stop bit.