46.4.7 PTC Characteristics
PTC Power Consumption
The values given in the table below are measured values of power consumption under the following conditions:
- Operating conditions
- VDD = 5.0V
- Clocks
- OSC48M used as main clock source, running undivided at 48 MHz
- CPU is running on Flash with 2 wait states at 48 MHz
- PTC running at 4 MHz
- PTC configuration
- Mutual-Capacitance mode
- One-touch channel
- System configuration
- Standby Sleep mode enabled
- RTC running on ULP32K: used to define the PTC scan rate through the event system
- Drift Calibration disabled: no interrupts, PTC scans are performed in Standby mode
- Drift Calibration enabled: RTC interrupts (wake up) the CPU to perform PTC scans. PTC drift calibration is performed every 1.5 second.
| Symbol | Parameters | Drift Calibration | PTC scan rate | Oversamples | Ta | Typ. | Max. | Units |
|---|---|---|---|---|---|---|---|---|
| IDD | Current Consumption | Disabled | 10 | 4 | Max. 105°C Typ. 25°C | 24 | 519 | µA |
| 16 | 43 | 543 | ||||||
| 50 | 4 | 17 | 512 | |||||
| 16 | 22 | 518 | ||||||
| 100 | 4 | 16 | 511 | |||||
| 16 | 19 | 515 | ||||||
| 200 | 4 | 16 | 511 | |||||
| 16 | 17 | 513 | ||||||
| Enabled | 10 | 4 | 30 | 530 | ||||
| 16 | 50 | 554 | ||||||
| 50 | 4 | 20 | 517 | |||||
| 16 | 24 | 522 | ||||||
| 100 | 4 | 18 | 516 | |||||
| 16 | 21 | 518 | ||||||
| 200 | 4 | 17 | 515 | |||||
| 16 | 19 | 517 |
Note:
- These values are based on characterization.