TM4C1231E6PM Datasheet, PDF (1117/1133 Pages) Texas Instruments – Brown-Out Reset Control (PBORCTL), offset 0x030

Tiva^™ TM4C1231E6PM Microcontroller _{(identical to LM4F110E5QR)}
d. I/O pads should be protected if at any point the IO voltage has a possibility of going outside the limits shown in the table.
If the part is unpowered, the IO pad Voltage or Current must be limited (as shown in this table) to avoid powering the
part through the IO pad, causing potential irreversible damage.
e. This value applies to an I/O pin that is voltage-protected within the Min and Max V_IO ratings. Leakage outside the specified
voltage range is unbounded and must be limited to I_INJ- using an external resistor.
f. MIN and MAX leakage current for the case when the I/O is voltage-protected to VIO Min or VIO Max.
g. If an I/O pin is not voltage-limited, it should be current-limited (to I_INJ+ and I_INJ-) if there is any possibility of the pad voltage
exceeding the V_IO limits (including transient behavior during supply ramp up, or at any time when the part is unpowered).
July 16, 2013
Texas Instruments-Production Data
1117