User manual

Reliable Sensorless Startup
Accomplish accurate positional feedback in
sensorless motor control applications with our
fast ADC tied to the PWM module controlled by
a distinctive back EMF control algorithm.
High Speed
Our fast ADC and the 20 MHz CPU core
provide the processing ability required to run the
complex motor control algorithms to support the
high speed of BLDC motors.
Accurate Torque Regulation
Integrated op-amp, time stamp, and s/h circuitry
provide effective tools to determine your rotor’s
position and achieve tight torque control.
Energy Efficiency
Ability to run the motor at slower speeds reduces
power consumption. Our 2µs ADC with time
stamp is tied to the PWM module and allows
you more accurate control of the motor at lower
or variable speeds.
Quiet Operation
Keep your BLDC motor’s audible noise low by
using the soft start feature and ability to adjust
the speed of the motor by using our advanced
analog motor control features.
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8-channel 2µs A/D Converter allows accurate current and back EMF sensing
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Time stamp on ADC sampling for accurate back EMF zero crossing
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Op-amp with external gain settings for current sensing amplification

Comparator with programmable shutdown for over-current protection

3-phase PWM module optimized for motor control

2% Internal Precision Oscillator
Due to their falling costs over the recent years, brushless DC (BLDC) motors
have been gaining more market share and are gaining in popularity
because of their high efficiency and reliability, small size, and silent
operation. ZiLOG’s high performance Z8 Encore! MC™ 8-bit
microcontrollers provide the advanced electronic features needed to keep
your BLDC design competitive in the marketplace today. Accurate motor
control and high speed processing while improving energy efficiency and
system cost – achieve all that and more with Z8 Encore! MC™
microcontrollers.
Motor Control Solutions
Z
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3-PHASE BLDC MOTORS
Z8FMC16100 Series MCU
MAIN APPLICATIONS
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Heating, ventilation and air conditioning
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Small and large appliances

Pumps

Automotive (power steering, seat control)

Toys

Compressors and fans

Industrial drives
FEATURES THAT SEPARATE US FROM THE REST
WWW.ZiLOG.COM
THE Z8 ENCORE! MC
DESIGN CHALLENGES
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