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MCP19124 датащи(PDF) 60 Page - Microchip Technology |
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MCP19124 датащи(HTML) 60 Page - Microchip Technology |
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60 / 236 page ![]() MCP19124/5 DS20005619A-page 60 2016 Microchip Technology Inc. 9.2 Calibration Word 2 Calibration Word 2 is at memory location 2081h. It contains the calibration bits for the desaturation comparator current measurement input offset voltage. Firmware must read these values and write them into the DSTCAL register to implement the factory offset calibration. The factory offset calibration will minimize offset voltage. The desaturation comparator is one of the few examples where the user may want to implement their own offset voltage values. Writing user defined values to the DSTCAL register provides this flexibility. Firmware must read these values and copy into the DSTCAL Special Function Register located in Bank 3 at 196h to implement factory calibration values. REGISTER 9-2: CALWD2: CALIBRATION WORD 2 REGISTER U-0 U-0 U-0 U-0 U-0 U-0 — — — — — — bit 13 bit 8 U-0 U-0 U-0 R/P-1 R/P-1 R/P-1 R/P-1 R/P-1 — — — DST4 DST3 DST2 DST1 DST0 bit 7 bit 0 Legend: R = Readable bit P = Programmable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 13-5 Unimplemented: Read as ‘0’ bit 4-0 DST<4:0>: Desaturation Comparator Current Measure Offset Calibration bits 11111 = Maximum negative offset calibration (-30 mV) • • • 10000 = Mid scale (0 mV) 00000 = Mid scale (0 mV) • • • 01111 = Maximum positive offset calibration (+30 mV) |
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