Datasheet

23 Electrical Characteristics
23.1 DC Characteristics
23.1.1 Maximum Ratings
The maximum ratings are the limits to which the device can be subjected without permanently
damaging the device.
Note: The device is not guaranteed to operate properly at the maximum ratings.
Table 23-1. Maximum Ratings
Unit
Value
Symbol
Characteristic
a
MaxMin
V40V
DD
I/O supply voltage (V
DD
)
V30V
DD25
Core supply voltage (V
DD25
)
V40V
DDA
Analog supply voltage (V
DDA
)
V40V
BAT
Battery supply voltage (V
BAT
)
V40V
CCPHY
Ethernet PHY supply voltage (V
CCPHY
)
V5.5-0.3
V
IN
Input voltage
VV
DD
+ 0.3-0.3Input voltage for a GPIO configured as an analog input
mA25-IMaximum current per output pins
mV300-V
NON
Maximum input voltage on a non-power pin when the
microcontroller is unpowered
a. Voltages are measured with respect to GND.
Important: This device contains circuitry to protect the inputs against damage due to high-static
voltages or electric fields; however, it is advised that normal precautions be taken to
avoid application of any voltage higher than maximum-rated voltages to this
high-impedance circuit. Reliability of operation is enhanced if unused inputs are
connected to an appropriate logic voltage level (for example, either GND or V
DD
).
23.1.2 Recommended DC Operating Conditions
For special high-current applications, the GPIO output buffers may be used with the following
restrictions. With the GPIO pins configured as 8-mA output drivers, a total of four GPIO outputs may
be used to sink current loads up to 18 mA each. At 18-mA sink current loading, the V
OL
value is
specified as 1.2 V. The high-current GPIO package pins must be selected such that there are only
a maximum of two per side of the physical package or BGA pin group with the total number of
high-current GPIO outputs not exceeding four for the entire package.
Table 23-2. Recommended DC Operating Conditions
UnitMaxNomMinParameter NameParameter
V3.63.33.0I/O supply voltageV
DD
V2.752.52.25Core supply voltageV
DD25
V3.63.33.0Analog supply voltageV
DDA
V3.63.02.3Battery supply voltageV
BAT
V3.63.33.0Ethernet PHY supply voltageV
CCPHY
June 18, 2012748
Texas Instruments-Production Data
Electrical Characteristics
NRND: Not recommended for new designs.