57.4.6 3 to 20 MHz Crystal Oscillator Characteristics
| Symbol | Parameter | Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| fOSC | Operating Frequency | Normal mode with crystal | 3 | – | 20 | MHz |
| tSTART | Startup Time | 3 MHz, CSHUNT = 3 pF | – | – | 40 | ms |
| 12 MHz, CSHUNT = 7 pF with CM = 1.6 fF | – | – | 6 | ms | ||
| 20 MHz, CSHUNT = 7 pF with CM = 1.6 fF | – | – | 5.7 | ms | ||
| IDDON | Current Consumption (on VDDIO) | 3 MHz | – | 230 | – | µA |
| 12 MHz | – | 390 | – | µA | ||
| 20 MHz | – | 450 | – | µA | ||
| CL | Internal Equivalent Load Capacitance | Integrated Load Capacitance | 7.5 | 9 | 10.5 | pF |
| (XIN and XOUT in series) |
CLEXT = 2 × (CCRYSTAL – CL – CPCB)
where, CPCB is the capacitance of the printed circuit board (PCB) track layout from the crystal to the pin.