Microcontroller Applications Prof Manoj V Bhalerao Assistant Professor
Microcontroller & Applications Prof. Manoj V. Bhalerao Assistant Professor & H. O. D. E&TC Dept. ,
Unit-III Unit III : Parallel Port Interfacing-II (6 Hrs) Interfacing of: DAC, Temperature sensors, Stepper motor, Motion detectors, Relay, Buzzer, Opto-isolaters, Design of DAS and Frequency counter: All programs in assembly
DAC 0808 8 -Bit D/A Converter Features • Relative accuracy: ± 0. 19% error maximum • Full scale current match: ± 1 LSB typ • Fast settling time: 150 ns typ • Non-inverting digital inputs are TTL and CMOS compatible • High speed multiplying input slew rate: 8 m. A/μs • Power supply voltage range: ± 4. 5 V to ± 18 V • Low power consumption: 33 m. W @± 5 V
DAC 0808 8 -Bit D/A Converter
DAC 0808 8 -Bit D/A Converter
DAC 0808 8 -Bit D/A Converter
Temperature Sensor LM 35 Precision Centigrade Temperature Sensors Features • Calibrated Directly in Celsius (Centigrade) • Linear + 10 m. V/°C Scale Factor • 0. 5°C Ensured Accuracy (at 25°C) • Rated for Full − 55°C to 150°C Range • Suitable for Remote Applications • Low-Cost Due to Wafer-Level Trimming • Operates from 4 V to 30 V • Less than 60 -μA Current Drain • Low Self-Heating, 0. 08°C in Still Air • Non-Linearity Only ±¼°C Typical
Temperature Sensor LM 35
Stepper Motor interfacing Half Excitation Table
Stepper Motor interfacing
- Slides: 10