Method to find a value within a range using weighted subranges

A method comprising:

• comparing a pin circuit voltage to one-half of a source voltage to determine whether the pin circuit voltage is initially less than one-half of the source voltage, wherein the comparing further comprises receiving an external pin sense signal and receiving a voltage source sense signal at a voltage reduction circuit;
• incrementing a coarse counter to a value greater than one-half of the source voltage, when the pin circuit voltage is initially less than one-half of the source voltage;
• decrementing a fine counter until the value of the coarse counter and the fine counter equals one-half of the source voltage, when the pin circuit voltage is initially less than one-half of the source voltage;
• decrementing the coarse counter to a value less than the pin circuit voltage, when the pin circuit voltage is initially greater than one-half of the source voltage;
• and
• incrementing the fine counter until the value of the coarse counter and the fine counter equals one-half of the source voltage, when the pin circuit voltage is initially greater than one-half of the source voltage.

A method comprising:

• comparing a pin circuit voltage to one-half of a source voltage to determine whether the pin circuit voltage is initially less than one-half of the source voltage, wherein the comparing further comprises receiving an external pin sense signal and receiving a voltage source sense signal at a voltage reduction circuit;
• incrementing a coarse counter variable to a value greater than one-half of the source voltage, when the pin circuit voltage is initially less than one-half of the source voltage;
• decrementing a fine counter variable until the value of the coarse counter variable and the fine counter variable equals one-half of the source voltage, when the pin circuit voltage is initially less than one-half of the source voltage;
• decrementing the coarse counter variable to a value less than the pin circuit voltage, when the pin circuit voltage is initially greater than one-half of the source voltage;
• and
• incrementing the fine counter variable until the value of the coarse counter variable and the fine counter variable equals one-half of the source voltage, when the pin circuit voltage is initially greater than one-half of the source voltage.

A method for matching a search value to a target value in a range of values having a maximum value and a minimum value, in a system having a coarse counter and a fine counter representing the search value, the method comprising:

• comparing the search value to the target value to determine whether the search value is initially less than the target value;
• incrementing the coarse counter to a value greater than the target value, when the search value is initially less than the target value;
• decrementing the fine counter until the value of the coarse counter and the fine counter equals the target value, when the search value is initially less than the target value;
• decrementing the coarse counter to a value less than the target value, when the search value is initially not less than the target value;
• and
• incrementing the fine counter until the value of the coarse counter and the fine counter equals the target value, when the search value is initially not less than the target value.

A method comprising:

• comparing a pin circuit voltage to one-half of a source voltage to determine whether the pin circuit voltage is initially less than one-half of the source voltage;
• incrementing a coarse counter variable to a value greater than one-half of the source voltage when the pin circuit voltage is initially less than one-half of the source voltage;
• decrementing a fine counter variable until the value of the coarse counter variable and the fine counter variable equals one-half of the source voltage, when the pin circuit voltage is initially less than one-half of the source voltage;
• combining the coarse counter variable and the fine counter to create a control signal;
• and
• controlling a variable impedance using the control signal.

A method comprising:

• comparing a pin circuit voltage to one-half of a source voltage to determine whether the pin circuit voltage is initially less than one-half of the source voltage;
• incrementing a coarse counter to a value greater than one-half of the source voltage, when the pin circuit voltage is initially less than one-half of the source voltage;
• decrementing a fine counter until the value of the coarse counter and the fine counter equals one-half of the source voltage, when the pin circuit voltage is initially less than one-half of the source voltage;
• and
• controlling a variable impedance using the coarse counter and the fine counter, wherein the variable impedance couples the source voltage to an external pin having the pin circuit voltage, and wherein the external pin is coupled to a signal source.