LPC1765 Startup time?

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LPC1765 Startup time?

Contributor I

I have a question regarding the startup time of the LPC1765 CPU: How long does it take for the Chip to start up and start executing the user program? Or in other words: Assuming that a stable power source is attached, how long does it take until the chip executes the first user instruction after the power source is attached? I couldn't find anything in the datasheet about that, just that the flash wake-up timer generates a 100uS startup time and then 250 additional clock cycles are needed. As the user program is stored in the flash, the startup time is higher than 100uS + 250 clock cycles I assume?

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NXP TechSupport
NXP TechSupport

Hi, Florian,

Pls refer to the following table, copied from UM10360.pdf.

It describes the time from rising Rest signal to the instant that the user code is executed.

Hope it can help you


XiangJun Rong


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