3.3.12 Peripheral QTouch® Controller (PTC) Electrical Specifications

Table 3-22. Peripheral QTouch® Controller AC Electrical Specifications
Standard Operating Conditions: V_DDIO = AVDD = 1.8V to 5.5V (unless otherwise stated) Operating Temperature: -40°C ≤ T_A ≤ +125°C for Extended Temperature
Param. No.	Symbol	Characteristics		Min.	Typ.	Max.	Units	Conditions
PTC_1	C_{LOAD_SC}⁽¹⁾	Self capacitance mode (PTC channel Y0 - Y31)	Y0	—	—	58	pF	Maximum sensor load capacitance⁽¹⁾
			Yn-1	—	—	—	pF
			Yn	—	—	—	pF
PTC_3	C_{LOAD_MC}⁽¹⁾	Mutual Capacitance mode (PTC channel Y0 - Y31)		—	—	28	pF
PTC_4A	f_PTC⁽²⁾	PTC frequency		—	—	FCLK_55	MHz
PTC_4B	t_wake	Wake-up time		—	—	—	µs
PTC_5	t_wake	Supply voltage		2.5	—	5.5	V
Note: Maximum capacitive load that the PTC circuitry can compensate for on each channel. f_PTC = GCLK_PTC / PTC prescaler.