z8fmc16100 ZiLOG Semiconductor, z8fmc16100 Datasheet - Page 77

• Manufacturer Part Number: z8fmc16100
• Description: Z8 Encore Motor Control Flash Mcus
• Manufacturer: ZiLOG Semiconductor

Pulse Width Modulator
PS024611-0408
Architecture
The Z8FMC16100 Series Flash MCU includes a Pulse-Width Modulator (PWM) optimized
for Motor Control applications. The PWM features include:
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The PWM unit consists of a master timer to generate the modulator time base and six
independent compare registers to set the pulse-width modulation for each output. The six
outputs are designed to provide control signals for inverter drive circuits. The outputs are
grouped into pairs consisting of a High driver and a Low driver output. The output pairs are
programmable to operate independently or as complementary signals. In complementary
output mode, a programmable dead time is inserted to ensure non-overlapping signal transi-
tions. The master count and compare values feed into modulator logic that generates the
proper transitions in the output states. Output polarity and fault/OFF state control logic
allows programming of the default OFF states, which forces the outputs to a safe state in
the event a fault in the motor drive is detected.
6 independent PWM outputs or 3 complementary PWM output pairs
Programmable deadband insertion for complementary output pairs
Edge-aligned or center-aligned PWM signal generation
PWM OFF state is option-bit-programmable
PWM outputs driven to OFF state on System Reset
Asynchronous disabling of PWM outputs on system fault; outputs are forced to OFF
state
FAULT inputs generate pulse-by-pulse or hard shutdown
12-bit reload counter with 1-, 2-, 4-, or 8-bit programmable clock prescaler
High current source and sink on all PWM outputs
When outputs are disabled, PWM pairs are used as general-purpose inputs
ADC synchronized with PWM period
Narrow pulse suppression with programmable threshold
Product Specification
Architecture
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