using a/d on pic 16f877 - Electronic Circuits Projects Diagrams Free

Iainm · 25th April 2004, 11:23 AM

I'm trying to use the a/d ports on the 16f877, but for some inexplicable reason I can't find specification information for the A/D in the datasheet or application notes. Does anyone know where I might find information on it, particularly the input voltage range?

Exo · 25th April 2004, 11:41 AM

Take a look at the datasheet for the 16F877A
Section 11

Iainm · 25th April 2004, 12:49 PM

found it on p194

**Nigel Goodwin** · 25th April 2004, 04:17 PM

Have a look at my tutorials, the latest one trys to simplify the A2D on the 16F876/7 - and, like anything else, should be used in conjunction with the datasheet.

Iainm · 25th April 2004, 05:22 PM

Am I reading this right? The minimum for Vref is Vdd-2.5?

Exo · 25th April 2004, 05:46 PM

The minimum for the High reference is indeed VDD - 2.5V
the minimum for the Low reference is VSS - 0.3 V

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25th April 2004, 11:23 AM	#1
Iainm	using a/d on pic 16f877 I'm trying to use the a/d ports on the 16f877, but for some inexplicable reason I can't find specification information for the A/D in the datasheet or application notes. Does anyone know where I might find information on it, particularly the input voltage range?

25th April 2004, 11:41 AM	#2
Exo	Take a look at the datasheet for the 16F877A Section 11

25th April 2004, 04:17 PM	#4
Nigel Goodwin	Have a look at my tutorials, the latest one trys to simplify the A2D on the 16F876/7 - and, like anything else, should be used in conjunction with the datasheet. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

25th April 2004, 05:22 PM	#5
Iainm	Am I reading this right? The minimum for Vref is Vdd-2.5?

25th April 2004, 05:46 PM	#6
Exo	The minimum for the High reference is indeed VDD - 2.5V the minimum for the Low reference is VSS - 0.3 V