nrf51822 current problem!

[ALi]

I measured my Nrf51822 current:

when my VCC is 3.0v ~ 3.3v my current is 0.16 mA. when my VCC is 2.6v ~ 2.8v my current is 1.5 mA (why?) when my VCC is lower than 2.6v my current is 0.5 mA (why?)

I don't understand this. sorry when my voltage fail some Peripheral start working? my program code is an NUS_Uart application . I read some ADC pins in my program and scan some IO. if my code is wrong why in high Vcc it get low current but in low Voltages high current.

[Dave_couling]

What firmware are you testing with? It sounds like you have some heavy processes going on. Also are you using the DC-DC?

[ALi]

I use S130 SDK 11 ver 2 alpha, and I don't know about DC-DC. No heavy process(I don't think so!) . if I had a heavy process so why my average current in Vcc = 3.3 is 160uA?

[Dave_couling]

So a few things to look for:

1. What is your conection / advertising interval?
2. Are you running release firmware or debugging?

[ALi]

My application when Adv uses 300 uA in Vcc= 3.3 and send data when it's ideal use 160uA but I don't know why when I change Power supply voltage to 2.7 it uses 1.5 mA? sorry, I don't Understand your questions. I program by Keil. not in debug mode. in release board.

[Dave_couling]

You Connection Parameters will determine your current consumption while connected. You likely want to update to a slower Connection Parameter if you want to reduce current consumption. Do you have any LED's on the board? If so what color?