33.6 Wake-Up Time
The following table shows wake-up time from various sleep modes with various system clock sources. It also shows the start-up time from reset with no Unified Programming Interface (UPDI) connection active and with 0 ms start-up time (SUT) setting.
| Symbol | Description | Clock Source | PDIV Division | fCLK_CPU | VDD | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|---|---|---|
| tstartup | The start-up time from the release of any Reset source. Execution of first instruction. (Excluding CRCSCAN) | Any | Any | Any | Any | - | 200 | - | µs |
| twakeup(1) | Wake-up from Idle | OSC20M FREQSEL =
0x2 | 1 | 20 MHz | 5V | - | 1 | - | |
| 2 | 10 MHz | 3V | - | 2 | - | ||||
| 4 | 5 MHz | 2V | - | 4 | - | ||||
OSC20M FREQSEL =
0x1 | 1 | 16 MHz | 5V | - | 1.2 | - | |||
| 2 | 8 MHz | 3V | - | 2.4 | - | ||||
| OSCULP32K | 1 | 32.768 kHz | 3V | - | 700 | - | |||
| Wake-up time from Standby or Power-down when clock source is stopped | OSC20M FREQSEL =
0x2 | 1 | 20 MHz | 5V | - | 12 | - | ||
| 2 | 10 MHz | 3V | - | 13 | - | ||||
| 4 | 5 MHz | 2V | - | 15 | - | ||||
OSC20M FREQSEL =
0x1 | 1 | 16 MHz | 5V | - | 16 | - | |||
| 2 | 8 MHz | 3V | - | 15 | - | ||||
| OSCULP32K | 1 | 32.768 kHz | 3V | - | 750 | - |
Note:
- The wake-up time is the time from the wake-up request is given until the peripheral clock is available on the clock output (CLKOUT) pin. All peripherals and modules start execution from the first clock cycle, except the CPU that is halted for four clock cycles before program execution starts.
