NSK LPC2148 User manual

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STEP: 1
Supply Input Voltage 12V AC/DC {or}Connect to USB for Power Input.
NOTE: LPC2148 Board Can Work either in 12V AC/DC or USB Power.
Do not connect both.
STEP: 2
Connect LPC2148 –COM0/ISP Port to PC via RS232 Port. If RS232 Port is
not available in your PC, use USB to UART Converter.

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STEP: 3
In Flash Utility,
Select Correct COM port Number, BAUD RATE(9600)and XTAL
Frequency(12000). COM Port can be identified in Device Manager (My
Computer Properties) in PC.
Do not select Device, Part Id and Bootloader Id, It Will automatically
Identify.
Disable DTR/RTS For Reset and Bootloader Selection.

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STEP: 4
How to Enter into ISP mode manually
Click Read Device Id.
If p0.14 is pulled low during RESET, it will enter into ISP mode In ISP
only we can Flash, Read, and verify hex file.
The bootloader uses UART#0 for downloading new program
images(Hex) into the processor FLASH.If the processor samples P0.14 low
after reset the bootloader is entered, else the application code is executed.
It will ask for “Please Reset Your Lpc2000 Board”.

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Sometimes if error message like “Cannot Communicate with Test
Board” Comes
Click Read Device Id again It will ask for
“Please Reset Your Lpc2000 Board”.
Now in LPC 2148 board press ISP switch (sw2)

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By holding ISP switch, press RESET switch (sw1)
Now release RESET switch (sw1)

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Then release ISP switch (sw2) also.
Now click OK.

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Device, Part Id and Bootloader Id is Read Successfully.
STEP: 5
Select the HEX File and click Upload to FLASH after Uploading Press
RESET Switch (sw1) for Return the LPC2148 Board into Application mode.

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