Getting 19200 baud serial out of a PIC

[Darrel Taylor]

PIC12F1822

8 Pins
Internal precision 32Mhz oscillator.
EUSART (HSEROUT).

You can run at 250K baud on the internal OSC.

Requires PBP 2.60A.

[dhouston]

8 Pins
Internal precision 32Mhz oscillator.
EUSART (HSEROUT).

Can the EUSART be inverted? If not, it may require additional hardware, depending on the application.

[Darrel Taylor]

Can the EUSART be inverted? If not, it may require additional hardware, depending on the application.

The transmit side can be inverted.
But with a 32Mhz OSC, 19200 is no problem for SEROUT2.

The bluetooth module may take true levels though.

[tekart]

That's a really cool chip - but it is pricey. I'm still on PBpro 2.50 - time to upgrade I guess. But I will try out the 12F615 first, I'm getting some next week. My bluetooth (BTM-182) unit needs true serial so that is OK.

Thanks Darrell - you da man!

[ScaleRobotics]

That's a really cool chip - but it is pricey.

It is about the same price as the PIC12f675, give or take 10 cents.

http://www.microchipdirect.com/Produ...rds=pic12f1822

[tekart]

Got some 12F615 chips today, and when I remembered to configure the internal oscillator for 8MHz it produced nice 19200 baud using SEROUT2:

serout2 tx,32,1,[69,10,13] ' test serial output

Thanks all!

[dhouston]

Got some 12F615 chips today, and when I remembered to configure the internal oscillator for 8MHz it produced nice 19200 baud using SEROUT2:

Thanks for the feedback.