[clarified] ATtiny13a how to use reset pin

Other Hardware 3rd Party Boards
1

Hi,

I build myself a working "HV fuse doctor" (see http://www.instructables.com/id/HV-Rescue-Simple/ ) and was wondering one thing: How do I program an attiny13a to use the reset pin?

Is this the right answer:
Upload the sketch to the attiny13 (as I always do) and burn the fuses afterwards to disable the reset pin? (related answer found here Attiny84 Reset Pin - Just A Quick Check - Microcontrollers - Arduino Forum )

If not or if I can use the "HV fuse doctor" to program an attiny13a, please point me the direction.

Thanks & best

2

PB5/D5/A0 is attached to the reset pin. There's nothing special you need to do, other than using some of the peripherals on this pin. You just need to set the RSTDISBL fuse.

3

Thanks for clarifying. :slight_smile:

Best!

4

Once you disable it, I think you have to use High Voltage (12V) programming to erase the fuses if you want to re-program the chip.

5

CrossRoads:
Once you disable it, I think you have to use High Voltage (12V) programming to erase the fuses if you want to re-program the chip.

Or use selfprogramming - i.e. bootloader.

6

Smajdalf:
Or use selfprogramming - i.e. bootloader.

Generally, yeah - the attiny13 has only 1k of flash though, and the bootloader would probably take around half of that... So not really viable.

7

I'll go with HV programming :wink:
Not tested the self-made HV fuse doctor with attiny13a but I'm optimistic.

Best