Methods and apparatus to configure a device using timing

A device comprising:

• peripheral circuitry including:
• a capacitor having a terminal;
• comparator circuitry having an input terminal and an output terminal, the input terminal of the comparator circuitry coupled to the terminal of the capacitor;
• and
• timer circuitry having an input terminal coupled to the output terminal of the comparator circuitry;
• and
• a connector including a resistor having a terminal coupled to the terminal of the capacitor and the input terminal of the comparator circuitry;
• wherein the comparator circuitry includes:
• an analog-to-digital converter (ADC) having an input terminal and an output terminal, the input terminal of the ADC coupled to the terminal of the capacitor;
• and
• controller circuitry having an input terminal and an output terminal, the input terminal of the controller circuitry coupled to the output terminal of the ADC, the output terminal of the controller circuitry coupled to the input terminal of the timer circuitry.

A device comprising:

• first peripheral circuitry including:
• a capacitor having a terminal;
• comparator circuitry having an input terminal and an output terminal, the input terminal of the comparator circuitry coupled to the terminal of the capacitor;
• and
• timer circuitry having an input terminal coupled to the output terminal of the comparator circuitry;
• and
• a first connector including a resistor having a terminal coupled to the terminal of the capacitor and the input terminal of the comparator circuitry;
• second peripheral circuitry having an input terminal, the second peripheral circuitry being another instance of the first peripheral circuitry;
• a second connector having an output terminal coupled to the input terminal of the second peripheral circuitry;
• and
• a primary device having an output coupled to the first peripheral circuitry by the first connector and the second peripheral circuitry by the second connector.

A device comprising:

• peripheral circuitry including:
• a capacitor having a terminal;
• comparator circuitry having an input terminal and an output terminal, the input terminal of the comparator circuitry coupled to the terminal of the capacitor;
• timer circuitry having input and output terminals, the input terminal of the timer circuitry coupled to the output terminal of the comparator circuitry;
• and
• configuration determination circuitry having a first input terminal and a second input terminal, wherein the first input terminal coupled to the output terminal of the timer circuitry;
• a connector including a resistor having a terminal coupled to the terminal of the capacitor and the input terminal of the comparator circuitry;
• and
• a look up table (LUT) having an output terminal coupled to the second input terminal of the configuration determination circuitry.

A device comprising:

• peripheral circuitry including:
• a capacitor having a first terminal;
• comparator circuitry having an input terminal and an output terminal, the input terminal of the comparator circuitry coupled to the terminal of the capacitor;
• and
• timer circuitry having an input terminal coupled to the output terminal of the comparator circuitry;
• and
• a connector including a resistor having a terminal coupled to the terminal of the capacitor and the input terminal of the comparator circuitry, the timer circuitry further including:
• switch circuitry having a first terminal, a second terminal, and a control terminal, the first terminal of the switch circuitry coupled to the second terminal of the capacitor, the second terminal of the switch circuitry coupled to a supply voltage;
• controller circuitry having an input terminal, a first output terminal, and a second output terminal, the input terminal of the controller circuitry coupled to the output terminal of the comparator circuitry, the first output terminal of the controller circuitry coupled to the control terminal of the switch circuitry;
• and
• counter circuitry having an input terminal and an output terminal, the input terminal of the counter circuitry coupled to the second output terminal of the controller circuitry.

A device comprising:

• peripheral circuitry including:
• a capacitor having a terminal;
• comparator circuitry having an input terminal and an output terminal, the input terminal of the comparator circuitry coupled to the terminal of the capacitor;
• and
• counter circuitry having an input terminal and an output terminal, the input terminal of the counter circuitry coupled to the output terminal of the comparator circuitry;
• a connector including a resistor having a terminal coupled to the terminal of the capacitor and the input terminal of the comparator circuitry;
• and
• configuration determination circuitry having an input coupled to the output terminal of the counter circuitry.

An apparatus comprising:

• a capacitor;
• comparator circuitry coupled to the capacitor, the comparator circuitry configured to compare a voltage at the capacitor to a threshold voltage;
• timer circuitry coupled to the comparator circuitry, the timer circuitry configured to determine a time that the voltage of the capacitor is equal to the threshold voltage;
• configuration determination circuitry coupled to the timer circuitry, the configuration determination circuitry configured to determine a configuration responsive to determining the time;
• and
• a configuration register coupled to the configuration determination circuitry, the configuration register configured to determine an address of the apparatus.

An apparatus comprising:

• a capacitor;
• comparator circuitry coupled to the capacitor, the comparator circuitry configured to compare a voltage at the capacitor to a threshold voltage;
• timer circuitry coupled to the comparator circuitry, the timer circuitry configured to determine a time that the voltage of the capacitor is equal to the threshold voltage;
• and
• configuration determination circuitry coupled to the timer circuitry, the configuration determination circuitry configured to determine a configuration responsive to determining the time, wherein the timer circuitry is further configured to:
• start incrementing a reference count responsive to beginning to discharge the capacitor;
• and
• stop incrementing the reference count responsive to the voltage of the capacitor being equal to the threshold voltage, the reference count represents the time.

An apparatus comprising:

• a capacitor;
• comparator circuitry coupled to the capacitor, the comparator circuitry configured to compare a voltage at the capacitor to a threshold voltage;
• timer circuitry coupled to the comparator circuitry, the timer circuitry configured to determine a time that the voltage of the capacitor is equal to the threshold voltage, wherein the time represents a count value of counter circuitry;
• configuration determination circuitry coupled to the timer circuitry, the configuration determination circuitry configured to determine a configuration responsive to determining the time;
• and
• a look up table (LUT) having a plurality of configurations of the apparatus, each one of the plurality of configurations corresponds to range of possible count values.