I2C and DAC Interfacing and Programming

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Presentation transcript:

I2C and DAC Interfacing and Programming Chapter9 I2C and DAC Interfacing and Programming

I2C Bus Characteristics

I2C Bit Format

START and STOP Conditions in I2C

Serial data Communication Comparison

DAC Block Diagram

Microcontroller Connection to DAC0808

MCP4725 DAC Block Diagram

I2C Connection to MCP4725 DAC in EduPad

Saw Tooth WaveForm

Angle vs. Voltage Magnitude for Sine Wave (degrees) Sin Ɵ VOUT (Voltage Magnitude) 1. 65V + (1. 65V × sin Ɵ) Values Sent to DAC (decimal) (Voltage Mag. × 310) 1.65 2048 30 0.5 2.475 3071 60 0.866 3.0789 3821 90 1.0 3.3 4095 120 150 180 210 -0.5 0.825 1024 240 -0.866 0.2211 274 270 -1.0 300 330 360

Angle vs. Voltage Magnitude for Sine Wave (for 3V)