New to 10F220

[mikebike]

Hi.

I'm relatively new to PIC's and I have never used the PICF220 before...

I can't understand how to set the I/Os, TRIS and then?

And since I'm already asking, how to set the port(s) to be ADC?

I read in the manual that the internal clock isn't really calibrated, but measured and a correction factor is programmed into the memory.
How to use it properly? (Without overwriting it when programming the PIC.)

PS. The PBP doesn't list the PIC10F220, but I guess choosing 222 will work?


Best regards from a newbie

[George]

I've not had much luck historically using the 10F series, PBP requires too many background resources . Have a look at the 12F series for small projects with PBP

[Acetronics2]

Hi.

I'm relatively new to PIC's and I have never used the PICF220 before...

Best regards from a newbie

Hi, Mike

No hope to run a PBP program with the 10F220 ... too small a RAM size.

assembler seems the only way with those lilliputian chips ...

That's why they won't be listed any day ...

Alain

[Kamikaze47]

Everything you need is in the data sheet.

You can set the port directions using TRISIO.x=y where x is the GPIO bit number and y is 0 out output or 1 for input. Or use the PBP INPUT or OUTPUT commands, for example:
OUTPUT GPIO.0
INPUT GPIO.3

The ADC is set with ADCON0. Page 30 of the data sheet tells you what to set it to for various configurations.

Are you using MPASM as your assembler? MPASM has files for the 10f220, so if are using it you would just have to make your own PBP files for it. Use the 10f222 PBP files as a base and change the CODE_SIZE to 100h and the included MPASM file to P10F220.INC

The internal oscillator is set up in that config file with: _IOFSCS_4MHZ or _IOFSCS_8MHZ

*edit* 2 above replies beat me - havnt tried PBP on this pic, so they may be right.

[mikebike]

Oops, not much use learning how to use the 10F220 then....

Which PIC do you guys recommend then?

I use PBP and Melabs U2 Programmer.
I need 2 x ADC, 4 x I/O, internal clock and small size (low price).


EDIT: Low power is not a drawback.

[Kamikaze47]

The 12F510 would be the cheapest that meets your requirements:

http://www.microchip.com/wwwproducts...cName=en023670

*edit*: as long as you dont need a lot of code space. The code space is 4 times that of the 10F220, but still limited.

[mikebike]

The 12F510 would be the cheapest that meets your requirements.

My local supplier don't have the 12F510 in DIP-package, only in SMD.

The PIC12F629 is slightly more expensive, but in stock in DIP. ??

[Acetronics2]

My local supplier don't have the 12F510 in DIP-package, only in SMD.

The PIC12F629 is slightly more expensive, but in stock in DIP. ??

The 629 has no ADC !!!

Choose 12F675 ... or the 12F683 which is not really more expensive, but offers lots of interesting features and ... 2K program space.

BTW ... could have been an idea to tell us what you intend to do ... don't you think ???

Alain