1818281+1818282 Microchip Technology, 1818281+1818282 Datasheet - Page 31

• Manufacturer Part Number: 1818281+1818282
• Description: EDF / AMICUS18 + SHIELD, BUNDLE
• Manufacturer: Microchip Technology
• Type: Development Boardr

Specifications of 1818281+1818282

• Kit Contents: Board
• Svhc: No SVHC (15-Dec-2010)
• Kit Features: Nine 10-bit ADC Inputs, Two 10-bit PWM Outputs, Two Comparators
• Mcu Supported Families: PIC18F25K20
• Silicon Manufacturer: Microchip
• Core Architecture: PIC
• Core Sub-architecture: PIC18
• Silicon Core Number: PIC18F
• Silicon Family Name: PIC18FxxKxx

Analogue Meets Digital
Not everything in the microcontroller world is made up of ons or offs, sometimes the input required is of
an analogue nature i.e. a voltage. This is where an Analogue to Digital Converter (ADC) comes into it’s
own. An ADC samples the incoming voltage and converts it to a binary representation. The Amicus18
has nine ADC inputs, each capable of producing a 10-bit sample (0 to 1023). The ADC can measure re-
sistance, current, sound, in fact anything that has a voltage.
To illustrate the use of the ADC peripheral, use the layout below:
The circuit for the above layout is shown below:
Crownhill AssociatesLimited 2009 - All Rights Reserved
Amicus18 Companion Shield
Version 1.0
AN4/AN5
AN3/RA3
AN2/RA2
AN1/RA1
AN0/RA0
PortA
Power
GND
GND
RA4
3V3
Rst
Vin
5V
30
Potentiometer
100K
Ω
06-10-2009