AMICUS18-COMPANION-SHIELD AMICUS, AMICUS18-COMPANION-SHIELD Datasheet - Page 46

• Manufacturer Part Number: AMICUS18-COMPANION-SHIELD
• Description: Amicus18 Companion Shield
• Manufacturer: AMICUS

Specifications of AMICUS18-COMPANION-SHIELD

• Silicon Manufacturer: Microchip
• Core Architecture: PIC
• Core Sub-architecture: PIC18
• Features: USB Interface, In Circuit Serial Programming Interface
• Kit Contents: Board
• Silicon Family Name: PIC
• Silicon Core Number: PIC18F25K20
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: PIC18F25K20 Microcontroller

Channel 2 PWM
As has been mentioned, the Amicus18 has two hardware PWM channels, each can work independently
of each other when adjusting the duty cycle, but share a common operating frequency and resolution.
This is because they both operate from the microcontroller’s Timer 2 module.
Operating the second channel of the PWM peripheral uses exactly the same procedure as operating
channel 1, but uses a different pin of PortC (RC1).
A demo layout for channel 2 of the PWM is shown below:
The circuit for the above layout is shown below:
The PWM peripherals operate in the background, which means that once a PWM duty cycle is set, it
does not block any other instructions from occurring.
Crownhill AssociatesLimited 2009 - All Rights Reserved
Amicus18 Companion Shield
Version 1.0
PortC
Power
GND
GND
RC7
RC6
RC5
RC4
RC3
RC2
RC1
RC0
3V3
Vin
Rst
5V
R
45
LED
47
Ω
C
330nF
06-10-2009