Description
Divide positive prescaler by clockHertz for tickSeconds and multiply by nonnegative tickCount for durationSeconds.
Timer formulas depend on whether endpoints are inclusive, the count direction, prescaling, and wrap behavior. A counter reading alone cannot reveal an arbitrary number of elapsed wraps.
Divide positive prescaler by clockHertz for tickSeconds and multiply by nonnegative tickCount for durationSeconds.
When to use this tool
Use Timer Prescale Resolution when you need a timer period, wrap delta, or explicit count-budget term.
How to use the tool and how it works
- Enter clockHertz, prescaler, tickCount. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read tickSeconds, durationSeconds. Use the output convention below.
Divide positive prescaler by clockHertz for tickSeconds and multiply by nonnegative tickCount for durationSeconds.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| clockHertz | Clock Hertz | Required. Finite number; strictly above 0. |
| prescaler | Prescaler | Required. Safe integer; minimum 1. |
| tickCount | Tick Count | Required. Safe integer; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| tickSeconds | Tick Seconds | Required. Finite number. |
| durationSeconds | Duration Seconds | Required. Finite number. |
{
"input": {
"clockHertz": 1000000,
"prescaler": 8,
"tickCount": 250
},
"output": {
"tickSeconds": 0.000008,
"durationSeconds": 0.002
}
}Limitations and assumptions
- This assumes a constant clock and direct divisor, without register encoding, jitter, or interrupt latency.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Check the timer mode and register semantics in the device documentation, including synchronization and latency.
References
Similar or alternative tools
- Microcontroller: Timer Prescaler Register Minus One
Return divisor minus one as registerValue.
- Microcontroller: Timer Counter Inclusive Period
Count top + 1 ticks for a counter visiting zero through top inclusively.