48.6.7.1 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 (wakeup) the CPU to perform PTC scans. PTC drift calibration is performed every 1.5 sec.
Table 48-19. Power Consumption (1)
Symbol Parameters Drift Calibration PTC scan rate Oversamples Ta Typ. Max Units
IDD Current Consumption Disabled 10 4 Max 125°C Typ 25°C 24 909 µA
16 43 933
50 4 17 902
16 22 908
100 4 16 901
16 19 905
200 4 16 901
16 17 903
Enabled 10 4 30 920
16 50 944
50 4 20 907
16 24 912
100 4 18 906
16 21 908
200 4 17 905
16 19 907
Note:
  1. These values are based on characterization.