AN031102-0311

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Sensorless Brushless DC Motor Control with the Z16FMC MCU

Application Note

In each of the Z16FMC products, the novel device architecture allows for realization of a

number of enhanced control features:

•

Time Stamp for Speed Control

•

Integrated Operational Amplifier

•

Multi-Channel PWM Timer

Time Stamp for Speed Control

Most microcontrollers use at least one dedicated comparator to detect the zero crossing of

the input AC voltage signal so that the output driving pulses can be synchronized and

Figure 1. The Z16FMC MCU Architecture

WDT with

RC Oscillator

POR/VBO

& Reset Control

Internal Precision

Oscillator

ZNEO

20 MHz CPU

ADC 10-bit

12-Channel

Comparator

Operational

Amplifier

3 x Timer

I C

ESPI

2 x LIN-UART

with IrDA

DMA

Controller

Interrupt

Controller

Flash

Controller

RAM

Controller

AB

C

D

E

F

G

H

128 KB

4 KB

Multi-Channel

PWM Timers

2

Ports

8

8888114

Number of pins available