Determining a time base for a microcontroller

Details Determining a time base for a microcontroller Determining a time base for a microcontroller

2006-03-18

2009-11-17

Tsai, Carol S (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C702S065000, C702S085000, C702S191000, C702S105000, C702S176000, C324S677000, C324S676000, C324S678000, C327S291000

Reexamination Certificate

active

07620512

ABSTRACT:
The invention relates to a method for producing a time base for a microcontroller and a simple circuit arrangement therefor, which comprises an RC-element having a specific time constant, said element being connected to a connection of the microcontroller. According to said method, the capacitor of the RC element is charged to an initial voltage in a first step, then in a second step, the number of timed impulses is counted until the voltage on the capacitor falls below the initial voltage to a determined percentage of the initial voltage or a voltage threshold value, and then in a third step, the counted number of timed impulses is used as a time base.

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