TWR-56F8257 Freescale Semiconductor, TWR-56F8257 Datasheet - Page 5

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TWR-56F8257

Manufacturer Part Number
TWR-56F8257
Description
TOWER SYSTEM KIT MC56F8257
Manufacturer
Freescale Semiconductor
Type
DSC, Digital Signal Controllerr
Datasheets

Specifications of TWR-56F8257

Contents
Board, Cables, Documentation, DVD
For Use With/related Products
Freescale Tower System, MC56F8257
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The masking of interrupt priority level is managed by the 56800E core.
2.1.5
Freescale Semiconductor
— Lowest-priority software interrupt: level LP
Nested interrupts: higher priority level interrupt request can interrupt lower priority interrupt subroutine
Two programmable fast interrupts that can be assigned to any interrupt source
Notification to system integration module (SIM) to restart clock out of wait and stop states
Ability to relocate interrupt vector table
One Enhanced Flex Pulse Width Modulator (eFlexPWM) module
— Up to nine output channels
— 16-bit resolution for center aligned, edge aligned, and asymmetrical PWMs
— Each complementary pair can operate with its own PWM frequency based and deadtime values
— PWM outputs can operate as complimentary pairs or independent channels
— Independent control of both edges of each PWM output
— 6-channel NanoEdge high resolution PWM
— 3 Channel PWM with full Input Capture features
— Support for synchronization to external hardware or other PWM
— Double buffered PWM registers
— Multiple output trigger events can be generated per PWM cycle via hardware
— Support for double switching PWM outputs
— Up to four fault inputs can be assigned to control multiple PWM outputs
— Independently programmable PWM output polarity
— Individual software control for each PWM output
— All outputs can be programmed to change simultaneously via a FORCE_OUT event
— PWMX pin can optionally output a third PWM signal from each submodule
— Channels not used for PWM generation can be used for buffered output compare functions
— Channels not used for PWM generation can be used for input capture functions
— Enhanced dual edge capture functionality
— Option to supply the source for each complementary PWM signal pair from any of the following:
Two independent 12-bit analog-to-digital converters (ADCs)
— 2 x 8 channel external inputs
— Built-in x1, x2, x4 programmable gain pre-amplifier
– 4 Time base
– Independent top and bottom deadtime insertion
– Fractional delay for enhanced resolution of the PWM period and edge placement
– Arbitrary eFlexPWM edge placement - PWM phase shifting
– NanoEdge implementation: 520 ps PWM frequency resolution
– Three PWM Channels - PWMA, PWMB, and PWMX
– Enhanced input capture functionality
– Integral reload rates from 1 to 16
– Half cycle reload capability
– Programmable filters for fault inputs
– Crossbar module outputs
– External ADC input, taking into account values set in ADC high and low limit registers
Peripheral Highlights
MC56F825x/MC56F824x Digital Signal Controller, Rev. 3
Overview
5

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