Use this embedded-systems calculation to configure or check a timer, serial bus, ADC, PWM, buffer, power mode, flash budget, or watchdog from known clock and device parameters.

High Seconds (s)

Required number input.

Low Seconds (s)

Required number input.

Observed I²C SCL bit rate from measured high and low periods of one complete clock pulse. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Bits Per Second (bit/s)

The resulting bits per second returned as a number.

• Register widths, clock trees, prescalers, oscillator tolerance, interrupt latency, peripheral modes, voltage references, quantization, sleep states, endurance conditions, and silicon errata are device-specific.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Confirm equations against the exact datasheet and reference manual, derive register values with integer rounding visible, and verify timing or voltage on hardware.

• Sleep Average Current

  Time-weighted average current of one active/sleep cycle; peripheral leakage outside these measured currents is not inferred.

• Timer Overflow Period

  Overflow interval for a free-running N-bit timer with a zero-based counter. Prescaler is the effective clock divisor, not necessarily the raw register value.

• UART Baud Divider

  Ideal UART oversampling divider before register quantization from peripheral clock, baud rate and oversampling factor.