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MC33977DWR2 Scheda tecnica(PDF) 11 Page - Freescale Semiconductor, Inc |
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MC33977DWR2 Scheda tecnica(HTML) 11 Page - Freescale Semiconductor, Inc |
11 / 37 page Analog Integrated Circuit Device Data Freescale Semiconductor 11 33977 FUNCTIONAL DESCRIPTION FUNCTIONAL INTERNAL BLOCK DESCRIPTION (OPTIONAL) FUNCTIONAL INTERNAL BLOCK DESCRIPTION (OPTIONAL) Figure 6. Functional Internal 33977 Block Illustration SERIAL PERIPHERAL INTERFACE (SPI) This circuitry manages incoming messages and outgoing status data. LOGIC This design element includes internal logic including state machines and message decoding. INTERNAL REFERENCE This design element is used for step value levels. UNDER AND OVERVOLTAGE DETECTION This design element detects when VPWR is out of the normal operating range. OSCILLATOR The internal oscillator generates the internal clock for all timing critical features. H-BRIDGE AND CONTROL This circuitry contains the output coil drivers and the multiplexers necessary for four quadrant operation and RTZ sequencing. This circuitry is repeated for the Sine and Cosine coils. • Overtemperature — Each output includes an overtemperature sensing circuit • ILIM — Each output is current limited RETURN TO ZERO (RTZ) This circuitry outputs the voltage present on the non-driven coil during RTZ operation. SPI Logic Under and Oscillator Overvoltage Detect H-Bridge and Control Internal Reference RTZ |
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