STM32WB55CCU6TR datasheet(85/193 Pages) STMICROELECTRONICS

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DS11929 Rev 10

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STM32WB55xx STM32WB35xx

Electrical characteristics

169

Table 20. Voltage characteristics(1)

Symbol

Ratings

Min

Max

Unit

VDDX - VSS

External main supply voltage



(including VDD, VDDA, VDDUSB, VLCD, VDDRF,

VDDSMPS, VBAT, VREF+)

-0.3

4.0

VIN(2)

Input voltage on FT_xxx pins

VSS-0.3

min (VDD, VDDA, VDDUSB, VLCD,

VDDRF, VDDSMPS) + 4.0(3)(4)

Input voltage on TT_xx pins

4.0

Input voltage on any other pin

4.0

|∆VDDx|

Variations between different VDDX power pins

of the same domain

-50

|VSSx-VSS|

Variations between all the different ground

pins(5)

-50

VREF+ - VDDA Allowed voltage difference for VREF+ > VDDA

-0.4

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

external power supply, in the permitted range.

2. VIN maximum must always be respected. Refer to Table 21 for the maximum allowed injected current values.

3. This formula has to be applied only on the power supplies related to the IO structure described in the pin definition table.

4. To sustain a voltage higher than 4 V the internal pull-up/pull-down resistors must be disabled.

5. Include VREF- pin.

Table 21. Current characteristics

Symbol

Ratings

Max

Unit

∑IVDD

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

130

∑IVSS

Total current out of sum of all VSS ground lines (sink)(1)

130

IVDD(PIN)

Maximum current into each VDD power pin (source)(1)

100

IVSS(PIN)

Maximum current out of each VSS ground pin (sink)(1)

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 and B pins, except PB0 and PB1

–5 / +0(4)

Injected current on PB0 and PB1

-5/0

∑|IINJ(PIN)|

Total injected current (sum of all I/Os and control pins)(5)

1. All main power (VDD, VDDRF, 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 referring to high pin count packages.

3. Positive injection (when VIN > VDD) 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 20: Voltage

characteristics for the maximum allowed input voltage values.

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