34.9 Injection Current

Stresses beyond those listed in the table below may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Table 34-13. Injection Current⁽¹⁾
Symbol	Description	min.	max.	Unit
I_inj1 ⁽²⁾	I/O pin injection current	-1	+1	mA
I_injtotal	Sum of I/O pins injection current	-45	+45	mA

Note:

Injecting current may have an effect on the accuracy of analog blocks.
Conditions for V_pin: V_pin < GND-0.3V or 3.6V<V_pin≤3.9V.

Conditions for V_DD: 2.7V<V_DD≤3.6V.

If V_pin is lower than GND-0.3V, then a current limiting resistor is required. The negative DC injection current limiting resistor R is calculated as R = |(GND-0.3V – V_pin)/I_inj1|.

If V_pin is greater than V_DD+0.3V, a current limiting resistor is required. The positive DC injection current limiting resistor R is calculated as R = (V_pin-(V_DD+0.3V))/I_inj1.