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PS810 Datasheet(PDF) 9 Page - Microchip Technology |
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PS810 Datasheet(HTML) 9 Page - Microchip Technology |
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9 / 46 page  © 2006 Microchip Technology Inc. DS21904C-page 9 PS810 TABLE 3-1: A/D OPERATION PARAMETERS Parameter Name # of Bytes Units Typical Value Operational Description NullCurr 1 mA 3 Zero zone control is built into the PS810 so that electrical noise doesn’t actually drain the gas gauge, when in fact the current is zero. For this reason, current less than NullCurr mA in either direction will be measured as zero. CFCurr 2 unsigned word 4200 Correction Factor for Current. Adjusts the scaling of the sense resistor current measurements. COCurr 1 signed byte 0 Correction Offset for Current. This is the value the A/D reads when zero current is flowing through the sense resistor. COD 1 signed byte 0 Correction Offset Deviation. Offset value for the auto-zero calibration of the current readings. AOMInterval 1 op cycles 60 Interval of time between auto-offset calibrations. AVGIScale 1 coded b00100000 Time period over which current is averaged to calculate average current: IAVG = IAVG + (I – IAVG)/(AVGIScale * 2). Note: Only Most Significant set bit is used, others are ignored. CFVoltage 2 integer 2250 Correction Factor for Pack Voltage. Adjusts the scaling of the VC1 pin measurement. CFCoin 2 integer 2250 Correction Factor for Coin Cell Measurement. Adjusts the scaling of the VCOIN pin measurement. CFTempE 2 integer 326 Correction Factor for Temperature. Adjusts the scaling of temperature measured across an external thermistor at the NTC input pin. CFTempI 2 integer 2038 Correction Factor for Temperature. Adjusts the scaling of temperature measured from the internal temperature sensor. COTempI 2 signed word 21298 Correction Offset for Temperature. Used for temperature measurement using internal temperature sensor. |
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