STM32U073RCT3TR datasheet(44/146 Pages) STMICROELECTRONICS

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Table 20. Current characteristics

Symbol

Ratings

Max

Unit

∑IVDD

Total current into sum of all VDD power lines (source)(1)

140

∑IVSS

Total current out of sum of all VSS ground lines (sink)

140

IVDD(PIN)

Maximum current into each VDD power pin (source)

100

IVSS(PIN)

Maximum current out of each VSS ground pin (sink)

100

IIO(PIN)

Output current sunk by any I/O and control pin except FT_f

Output current sunk by any FT_f pin

Output current sourced by any I/O and control pin

∑IIO(PIN)

Total output current sunk by sum of all I/Os and control pins(2)

100

Total output current sourced by sum of all I/Os and control pins(2)

100

IINJ(PIN)(3)

Injected current on FT_xxx, TT_xx, RST

-5/+0(4)

∑|IINJ(PIN)|

Total injected current (sum of all I/Os and control pins)

1. All main power (VDD, VDDA, VDDUSB, VBAT) and ground (VSS, VSSA) pins must always be connected to the external power supplies, in the

permitted range.

2. This current consumption must be correctly distributed over all I/Os and control pins. The total output current must not be sunk/sourced

between two consecutive power supply pins.

3. Positive injection (when VIN > VDDIOx) is not possible on these I/Os and does not occur for input voltages lower than the specified maximum

value.

4. A negative injection is induced by VIN < VSS. IINJ(PIN) must never be exceeded. Refer also to Table 19. Voltage characteristics for the

maximum allowed input voltage values.

5. When several inputs are submitted to a current injection, the maximum ∑|IINJ(PIN)| is the absolute sum of the negative injected currents

(instantaneous values).

Table 21. Thermal characteristics

Symbol

Ratings

Value

Unit

TSTG

Storage temperature range

-65 to +150

°C

Maximum junction temperature

150

°C

6.3

Operating conditions

6.3.1

General operating conditions

Table 22. General operating conditions

Symbol Parameter

Conditions

Min

Max

Unit

fHCLK

Internal AHB clock frequency

MHz

fPCLK

Internal APB clock frequency

VDD

Standard operating voltage

1.71(1)

3.6

VDDA

Analog supply voltage

ADC or COMP used

1.62

3.6

OPAMP used

1.8

ADC, OPAMP, COMP not

used

VBAT

Backup domain supply voltage

1.55

3.6

VDDUSB USB supply voltage

USB used

3.0

3.6

STM32U073x8/B/C

Electrical characteristics

DS14548 - Rev 2

page 44/146

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