Coded data generation or conversion – Converter compensation
Reexamination Certificate
2006-11-17
2008-08-19
Nguyen, Khai M (Department: 2819)
Coded data generation or conversion
Converter compensation
C341S120000, C341S128000, C341S129000, C341S164000, C341S165000
Reexamination Certificate
active
07414553
ABSTRACT:
A microcontroller has an integrating analog-to-digital converter (IADC) with an in-situ autocalibrating functionality. On-chip autocalibrating circuitry supplies a first predetermined analog input voltage to the IADC and obtains a first data value from the IADC. The autocalibrating circuitry supplies a second predetermined analog input voltage to the IADC and obtains a second data value. The first and second data values are used to calibrate the IADC such that if the first input voltage is later supplied to the IADC, then the IADC will output a first predetermined desired digital output value and such that if the second input voltage is later supplied to the IADC, then the IADC will output a second predetermined desired digital output value. The first and second analog input voltages are generated on-chip so the calibration is performed automatically without having to supply external calibrating signals to the microcontroller. Other related methods and circuitry is disclosed.
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Imperium Patent Works
Nguyen Khai M
Wallace Darien K.
Wallace T. Lester
ZiLOG, Inc.
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