Nuts & Volts - June 2007

SOURCES

■ Silicon Laboratories ( www.si labs.com) — C8051F120, C8051F120 Development Board

■ Keil ( www.keil.com) — Keil uVison3 C Compiler

■ Saelig ( www.saelig.com) — Cleverscope

supplied to DAC0 via the x2 buffer/ amplifier.

CHECKED OUT

You’re ready to roll with your own C8051F120 applications as you’re now “checked out” on the C8051F120 and its on-chip peripherals. If you’re wondering about the absence of analog-to-digital converter coverage, here it is courtesy of the Configuration Wizard 2 application:

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void ADC_Init()
{

SFRPAGE   = ADC0_PAGE;
ADC0CN    = 0x80;  // enable ADC0

Use the Configuration Wizard 2 application to choose your analog-to-digital converter trigger method and write some simple code to poll for and fetch the analog-to-digital converter result. That’s all you need to read voltages at the C8051F120’s AN0 input. Using the C8051F120’s analog-to-digital converter in basic mode is no different than using any other microcontroller’s analog-to-digital converter.

The key to C8051F120 application success lies with the Configuration Wizard 2 application and the Keil µVision3/Silicon Laboratories development suite. If you have control over the aforementioned items, you can easily add the C8051F120 to your Design Cycle. NV