50.3.2 Input Pins

Table 50-4. Recommended Operating Conditions on Input Pins⁽¹⁾
Symbol	Parameter	Conditions	Min	Typ	Max	Unit
EMAFE_IN	Input voltage range on EMAFE input pins	On I_P{1,2}, I_N{1,2} and V_P{1,2}	-0.25	–	0.25	V
V_{GPIO_IN}	Input voltage range on GPIOs referenced to VDD3V3	On any pin configured as a digital input	-0.3	–	VDD3V3 +0.3	V
V_{VDDBU_IN}	Input voltage range on inputs referenced to VDDBU (VBAT or VDD3V3)	–	-0.3	–	(VBAT,VDD3V3) +0.3	V
V_IN	Input line voltage range on inputs^{(2, 3)}	–	-0.3	–	V_DD3V3 + 0.3V	V
I_IN	DC current injection on inputs⁽⁴⁾	–	–	–	±0.2	mA
I_{TOT_INJ}	Total current injection per power rail or per ground rail⁽⁵⁾	–	–	–	±2	mA

Note:

All I/O pins are internally clamped to their respective VDD and GND rails as defined in the table “Pin Description”.
Input voltages V_IN≤ 0V or V_IN≥ VDD3V3 lead to negative or positive current injection on inputs.
For analog inputs, input voltages V_IN≥ min(VDD3V3, V_VREFP) lead to saturated A/D conversion to 0xFFF.
Current injection on A/D converter analog inputs may degrade the analog performance of the corresponding channel or the analog performance of other analog channels.
Corresponds to the sum of the positive currents into one power rail and respectively to the sum of the negative currents into one ground rail as defined in the table Pinout and Multiplexing.