AN414

Conclusion

Doc ID 1876 Rev 2

11/14

4

Conclusion

Microcontrollers are often limited to controlling and monitoring the user interfaces. This

paper describes a digital solution based on a general purpose MCU with on-chip PWM

generator, the ST6265C. Besides the user interface such as an LCD drive, the MCU

controls directly a DC motor with few external components and sophisticated control. A

simple instruction set and the use of look-up tables allow for a short time-to-market, while

avoiding the investment into an ASIC circuit. The demonstrated concept is applicable to

home appliances (food processor, washing machine, refrigerator, HVAC ...) and to industrial

applications where high speed accuracy is not required (pumps, fans ...).

5

References

[1] - Microcontroller and TRIAC on 120/230 v mains

A.N 392/A - Ph. RABIER and L. PERIER (SGS-THOMSON Microelectronics)

[2] - Design with microcontrollers in noisy environment

A.N 435 - L. PERIER (SGS-THOMSON Microelectronics)

[3] - Versatile and cost-effective induction motor drive with digital three phase generation

A.N 424 - B. MAURICE, JM. BOURGEOIS, B. SABY (SGS-THOMSON

Microelectronics)

[4] - Direct Software LCD Drive with ST621x and ST626x

A.N 594 - T. CASTAGNET, J. NICOLAI, N. MICHEL (SGS-THOMSON

Microelectronics)