Flowcode Support Board

I see that the 16F527 has internal operational amplifiers. I started a new project to look at this and can't figure out how to use these peripherals. Do we have examples or info on this?

You'll need to handle the Analog peripheral setup in C by accessing the relevant registers..

APFCON, CM1CON0/CM2CON0 and OPACON

to:

Enable the op amp
Configure input selection
Enable output routing
Set gain mode

Do you have a specific use in mind?

Sure - I want to setup a gain of around 25:1 so I can read a low signal. I'm not proficient writing C code to achieve my goal.

The documentation (datasheet) verges on the flimsy here - a little on the thin side.....

Apart from table 16-16 showing unity gain mode - there is little info (apart from two bits in OPACON to enable the op-amps)

Looking at the https://ww1.microchip.com/downloads/en/ ... 03280A.pdf document - reveals a lot more control - but the registers mentioned (for example OPA1CON0 don't seem to be present on the PIC16F527.

Do you have any info on it?

Seems o be more set up as a comparator than an op-amp
Martin

Hi

This document is a bit more applicable.

Regards

Thanks People!
On the flip side, do you know of better choices for a uP with opamp capacity?

PIC16F176x or PIC16F177x series might be worth a look...