54.11 PTC Characteristics

Note:

Note:

Analog Gain is a parameter of the QTouch Library. Refer to the “QTouch Library Peripheral Touch Controller User Guide” for additional information.
The GAIN_16 and GAIN_32 settings are not recommended; otherwise, the PTC measurements might become unstable.

The values in the following Power Consumption table are measured values of power consumption under the following conditions:

Operating Conditions:

VDD = 3.0V

Clocks:

DFLL48M 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

RTC interrupts (wake up) the CPU to perform PTC scans

Table 54-37. Power Consumption ⁽¹⁾
Symbol	Parameters	PTC scan rate (msec)	Oversamples	TA	Typ.	Max	Units
IDD	Current Consumption	10	4	Max 85°C Typ 25°C	137	1164	µA
		10	16		146	1179
		50	4		77	1094
		50	16		79	1100
		100	4		68	1086
		100	16		69	1089
		200	4		64	1085
		200	16		65	1087

Note: