39.8.8 PTC Characteristics at 125°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 is 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 (2) | Current Consumption | Disabled | 10 | 4 | Max 125°C Typ 25°C | 66 | 791 | µA |
| 16 | 75 | 803 | ||||||
| 50 | 4 | 61 | 787 | |||||
| 16 | 63 | 791 | ||||||
| 100 | 4 | 61 | 788 | |||||
| 16 | 62 | 790 | ||||||
| 200 | 4 | 60 | 788 | |||||
| 16 | 61 | 789 | ||||||
| Enabled | 10 | 4 | 71 | 802 | ||||
| 16 | 80 | 813 | ||||||
| 50 | 4 | 63 | 792 | |||||
| 16 | 65 | 795 | ||||||
| 100 | 4 | 62 | 791 | |||||
| 16 | 63 | 793 | ||||||
| 200 | 4 | 62 | 790 | |||||
| 16 | 63 | 791 |
Note:
- These are based on characterization.
- On this table, the LDO Voltage Regulator is enabled in Standby mode (SYSCTRL.VREG.RUNSTDBY = 1).