PIC24 current

[antonadc]

Hi everyone.

Quick question. I built a quick dev vero board for this chip. After programming it to blink a LED and it works great but I noticed the current was over 100ma. Is this normal for this pic. I am running it at 80mhz with a 8mhz crystal. If I insert a 4 MHz crystal it drops to 50ma. If I press the reset switch and bring everything to a halt the current drops to 8 or 10ma which is what the regs draw. I have the vcap right at 10mfd and the analog vss is to gnd and the analog vdd to plus 3.3v. The LED has a 1K resistor in series and I have a 100nf on the 3.3 v and gnd. Never had a pic draw so much current. This is a brand new chip. I got 3 samples from microchip.

Anton

[uros.cvetinovic]

Hi,

Can you please tell me how did you measure those values, and which exact MCU did you use?

Best regards,

Uros

[antonadc]

Thank you for reply but the datasheet says 76ma at 25deg c so with 76ma and external regulators it will add up to 100ma. Even in sleep mode it draws a lot of current. I think its this particular pic family that does it. Thanks

Anton

[arco]

Difficult to say if you give no information... (we don't know what controller you have)