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56800EFM Datasheet(PDF) 6 Page - Freescale Semiconductor, Inc |
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56800EFM Datasheet(HTML) 6 Page - Freescale Semiconductor, Inc |
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6 / 52 page  56F803 Technical Data, Rev. 16 6 Freescale Semiconductor software routines that can be used to program the main Program and Data Flash memory areas. Both Program and Data Flash memories can be independently bulk–erased or erased in page sizes of 256 words. The Boot Flash memory can also be either bulk- or page-erased. A key application-specific feature of the 56F803 is the inclusion of a Pulse Width Modulator (PWM) module. This module incorporates three complementary, individually programmable PWM signal outputs (the module is also capable of supporting three independent PWM functions, for a total of six PWM outputs) to enhance motor control functionality. Complementary operation permits programmable dead time insertion, distortion correction via current sensing by software, and separate top and bottom output polarity control. The up-counter value is programmable to support a continuously variable PWM frequency. Edge- and center-aligned synchronous pulse width control (0% to 100% modulation) is supported. The device is capable of controlling most motor types: ACIM (AC Induction Motors), both BDC and BLDC (Brush and Brushless DC motors), SRM and VRM (Switched and Variable Reluctance Motors), and stepper motors. The PWM incorporates fault protection and cycle-by-cycle current limiting with sufficient output drive capability to directly drive standard opto-isolators. A “smoke-inhibit”, write-once protection feature for key parameters and patented PWM waveform distortion correction circuit are also provided. The PWM is double-buffered and includes interrupt controls to permit integral reload rates to be programmable from 1 to 16. The PWM module provides a reference output to synchronize the ADC. The 56F803 incorporates a separate Quadrature Decoder capable of capturing all four transitions on the two-phase inputs, permitting generation of a number proportional to actual position. Speed computation capabilities accommodate both fast and slow moving shafts. The integrated watchdog timer in the Quadrature Decoder can be programmed with a time-out value to alarm when no shaft motion is detected. Each input is filtered to ensure only true transitions are recorded. This controller also provides a full set of standard programmable peripherals that include a Serial Communications Interface (SCI), one Serial Peripheral Interface (SPI), and four Quad Timers. Any of these interfaces can be used as General Purpose Input/Outputs (GPIO) if that function is not required. A Controller Area Network interface (CAN Version 2.0 A/B-compliant) and an internal interrupt controller are also included on the 56F803. 1.3 State of the Art Development Environment • Processor ExpertTM (PE) provides a Rapid Application Design (RAD) tool that combines easy-to-use component-based software application creation with an expert knowledge system. • The Code Warrior Integrated Development Environment is a sophisticated tool for code navigation, compiling, and debugging. A complete set of evaluation modules (EVMs) and development system cards will support concurrent engineering. Together, PE, Code Warrior and EVMs create a complete, scalable tools solution for easy, fast, and efficient development. |
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