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I was thinking about this. It sounds like a fun project.

You could create a FIFO buffer that captured only the PORTB change on interrupt. This will ensure a deterministic maximum interval. Als ...

I would reduce the bulk capacitance then connect a resistor inline and scope the surge. Maybe the duration and type of the surge will tell you something.

I found this link. It allows you to modify the clock source input with the required ASM unlock sequence. It will allow you to manually adjust and verify the clock sources. Note: Please be aware, th ...

All the hardware is removed. The unit now draws a total of 13 uA Very Happy

in deep sleep mode with the LPRC waking the unit up every second. When the MCU wakes up, it draws 284 uA. Does anybody know ...

Thanks Ttelmah,

If I insert this line at the beginning, the current draw is 224 uA

setup_oscillator(OSC_RC, 0);

And this one uses the FRC and draws 500 uA

setup_oscillator ...

I recently completed a project on the Pic 10F322. It's great to use on projects if you have a dilemma between pure hardware or micro.

Anyways, I wanted to play with the CLC hardware. It's prett ...

Hi all,

Been trying to setup this Pic (24FJ128GC006) to sip as little power as possible. When the mcu enters sleep without RAM retention, I measure 75 uA - which is fine as a baseline. When it is ...

This is very odd. If you set the RELEASE bit low twice, it works.

This does not work:

#bit DPSLP = getenv("bit:DPSLP")
#bit RELEASE = getenv("bit:RELEAS ...

To go that low, you are stopping the RTCC as well. The RTCC draws over three hundred uA.

If you are doing that, why not just switch the processor off?. A FET switch, can power it down completely.. ...

As a comment, you do realise that deep sleep will erase all the RAM.

There are a number of sleep modes:
sleep
low voltage sleep
retention deep sleep
deep sleep

The last one erases the memory ...

Thanks for the pointers temtronic.

I'll try these things out.

So I've narrowed the problem down. When the MCU restarts and detects a wake up condition from deep sleep (DPSLP == 1), Clearing the ...

Something like this would be faster.

BYTE CONST segs_7[12]={0xfc,0x60,0xda,0xf2,0x66,0xb6,0xbe,0xe0,0xfe,0xf6,0x00,0xce};

#define latch_seg output_high(clock_pin) ...

I remember having some issues with the clock speed on this pic. I know this works so hopefully it helps.

#FUSES FRC_PLL //Internal Fast RC oscillator with PLL

#word RCON=0x ...

Hi all. I've been trying to get this Pic to wake up on a RTCC interrupt with no luck.

The RTCC is functioning fine on SOSC.

Here's the strange thing - Right after programming the chip, it fun ...

FYI. So you don't make the same mistake I did. If you really want to know what is happening, make sure you invest in some good differential probes or use a scope with isolated inputs. And I'm not t ...