Calculate basic parameters of LPC1317-64P from datasheet

[lpcware]

Content originally posted in LPCWare by aamir ali on Sat Dec 29 02:36:13 MST 2012
Hi,

1. I have to calculate Pavg(average power dissipated by mcu) & Iavg(average power supply current.)

Iavg = Pavg/Vdd

Now Pavg = Pio(pin power) + Pint(internal core power)

2. Now Iavg & pavg are not directly mentioed.
Is

Iavg = Idd(supply current per pin) * No_of Supply Pins

Is it right formula ?????

How to find Pio & Pint separately.

[lpcware]

Content originally posted in LPCWare by vasanth on Sat Dec 29 08:23:30 MST 2012
No. You missed out power consumed by MCU peripherals, Clock circuitry and PLL...:mad:
Calculating from datasheet is not recommended.
Use a device such as a multimeter to find the total current consumed by your MCU from your board.
Then, this simple formula P = V x I is all you need. :)


If your goal is to achieve low power then this might help you.
http://www.microcontrollercentral.com/author.asp?section_id=2138&doc_id=254339