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MC56F8356MFVE Datasheet(PDF) 8 Page - Freescale Semiconductor, Inc |
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MC56F8356MFVE Datasheet(HTML) 8 Page - Freescale Semiconductor, Inc |
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8 / 178 page  56F8356 Technical Data, Rev. 13 8 Freescale Semiconductor Preliminary 1.2.1 56F8356 Features The 56F8356 controller includes 256KB of Program Flash and 8KB of Data Flash (each programmable through the JTAG port) with 4KB of Program RAM and 16KB of Data RAM. It also supports program execution from external memory. A total of 16KB of Boot Flash is incorporated for easy customer inclusion of field-programmable 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 pages. Program Flash page erase size is 1KB. Boot and Data Flash page erase size is 512 bytes. The Boot Flash memory can also be either bulk or page erased. A key application-specific feature of the 56F8356 is the inclusion of two Pulse Width Modulator (PWM) modules. These modules each incorporate three complementary, individually programmable PWM signal output pairs (each module is also capable of supporting six independent PWM functions, for a total of 12 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-aligned 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 PWMs incorporate fault protection and cycle-by-cycle current limiting with sufficient output drive capability to directly drive standard optoisolators. A “smoke-inhibit”, write-once protection feature for key parameters is also included. A patented PWM waveform distortion correction circuit is also provided. Each PWM is double-buffered and includes interrupt controls to permit integral reload rates to be programmable from 1 to 16. The PWM modules provide reference outputs to synchronize the Analog-to-Digital Converters through two channels of Quad Timer C. The 56F8356 incorporates two Quadrature Decoders 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. An integrated watchdog timer in the Quadrature Decoder can be programmed with a time-out value to alert 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 two Serial Communications Interfaces (SCIs); two Serial Peripheral Interfaces (SPIs); and four Quad Timers. Any of these interfaces can be used as General Purpose Input/Outputs (GPIOs) if that function is not required. A Flex Controller Area Network (FlexCAN) interface (CAN Version 2.0 B-compliant) and an internal interrupt controller are a part of the 56F8356. 1.2.2 56F8156 Features The 56F8156 controller includes 256KB of Program Flash, programmable through the JTAG port, with 16KB of Data RAM. It also supports program execution from external memory. A total of 16KB of Boot Flash is incorporated for easy customer inclusion of field-programmable software routines that can be used to program the main Program Flash memory areas, which can be independently bulk erased or erased in pages. Program Flash page erase size is 1KB. Boot Flash page erase size is 512 bytes. and the Boot Flash memory can also be either bulk or page erased. |
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