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.

Rated Cycles

Required integer input.

Used Cycles

Required integer input.

Remaining nominal flash erase/program cycles from a rated cycle count and tracked cycles already used. 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]

Remaining Cycles

The resulting remaining cycles returned as an integer.

• 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.

• PWM Duty Count

  Nearest PWM active-tick count for a target duty fraction over an inclusive zero-to-period-register timer cycle.

• Sleep Average Current

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

• Watchdog Timeout

  Nominal watchdog timeout for an inclusive reload counter. Prescaler is the effective watchdog-clock divisor; verify the device's register encoding and oscillator tolerance.