38.9 PTC Characteristics at 105°C
The values in the Power Consumption table below are measured values of power consumption under the following conditions:
Operating Conditions
VDD = 3.3V
Clocks
OSC8M used as main clock source, running undivided at 8MHz
CPU is running on flash with 0 wait states, at 8MHz
PTC running at 4MHz
PTC Configuration
Mutual-capacitance mode
One touch channel
System Configuration
Standby sleep mode enabled
RTC running on OSCULP32K: 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 (wakeup) the CPU to perform PTC scans. PTC drift calibration is performed every 1.5 sec.
| Symbol | Parameters | Drift Calibration | PTC scan rate (msec) | Oversamples | Ta | Typ. | Max | Units |
|---|---|---|---|---|---|---|---|---|
| IDD | Current Consumption | Disabled | 10 | 4 | Max 105°C Typ 25°C | 9 | 458 | µA |
| 16 | 17 | 467 | ||||||
| 50 | 4 | 5 | 452 | |||||
| 16 | 6 | 454 | ||||||
| 100 | 4 | 4 | 452 | |||||
| 16 | 5 | 453 | ||||||
| 200 | 4 | 4 | 452 | |||||
| 16 | 4 | 452 | ||||||
| Enabled | 10 | 4 | 15 | 466 | ||||
| 16 | 23 | 476 | ||||||
| 50 | 4 | 7 | 456 | |||||
| 16 | 8 | 459 | ||||||
| 100 | 4 | 5 | 455 | |||||
| 16 | 6 | 455 | ||||||
| 200 | 4 | 6 | 453 | |||||
| 16 | 6 | 454 |