Sleep power consumption

[Nereus]

Hi guys,

I tried to measure the current when my PIC16F727 is in sleep mode but it turns out that the current is like 4.3 uA, which is much higher than 50nA, the one specified in the datasheet.

Should I just use SLEEP() function or I need to add some other things?

Thanks in advance!
Nereus

[Gusse]

Hi Nereus,

Most probably you have electrolytic or tantalum capacitor connected to Vdd and that is causing some of the leakage current. Also PIC settings can increase current consumption.

Ceramic capacitor have less leakage, but capacitance is more limited.

What is you power supply and voltage?
What equipment do you use for current measurement?

Noisy environment can easily cause inaccuracy in nA range.

BR,
-Gusse-