STM32WB55CC datasheet(123/165 Pages) STMICROELECTRONICS

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DS11929 Rev 3

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STM32WB55xx

Electrical characteristics

152

Input/output AC characteristics

The definition and values of input/output AC characteristics are given in Table 70.

Unless otherwise specified, the parameters given are derived from tests performed under

the ambient temperature and supply voltage conditions summarized in Table 22: General

operating conditions.

Table 69. Output voltage characteristics(1)

1. The IIO current sourced or sunk by the device must always respect the absolute maximum rating specified

in Table 18: Voltage characteristics, and the sum of the currents sourced or sunk by all the I/Os (I/O ports

and control pins) must always respect the absolute maximum ratings Σ IIO.

Symbol

Parameter

Conditions

Min

Max Unit

VOL(2)

2. Guaranteed by design.

Output low level voltage for an I/O pin

CMOS port(3)

|IIO| = 8 mA

VDD ≥ 2.7 V

3. TTL and CMOS outputs are compatible with JEDEC standards JESD36 and JESD52.

-0.4

VOH(2)

Output high level voltage for an I/O pin

VDD - 0.4

VOL(2)

Output low level voltage for an I/O pin

TTL port(3)

|IIO| = 8 mA

VDD ≥ 2.7 V

-0.4

VOH(2)

Output high level voltage for an I/O pin

2.4

VOL(2)

Output low level voltage for an I/O pin

|IIO| = 20 mA

VDD ≥ 2.7 V

-1.3

VOH(2)

Output high level voltage for an I/O pin

VDD - 1.3

VOL(2)

Output low level voltage for an I/O pin

|IIO| = 4 mA

VDD ≥ 1.62 V

-0.4

VOH(2)

Output high level voltage for an I/O pin

VDD - 0.45

VOLFM+(2)

Output low level voltage for an FT I/O

pin in FM+ mode (FT I/O with “f” option)

|IIO| = 20 mA

VDD ≥ 2.7 V

-0.4

|IIO| = 10 mA

VDD ≥ 1.62 V

-0.4

|IIO| = 2 mA

1.62 V ≥ VDD ≥ 1.08 V

-0.4

Table 70. I/O AC characteristics(1)(2)

Speed Symbol

Parameter

Conditions

Min

Max

Unit

Fmax

Maximum frequency

C=50 pF, 2.7 V ≤ VDD ≤ 3.6 V

MHz

C=50 pF, 1.62 V ≤ VDD ≤ 2.7 V

C=10 pF, 2.7 V ≤ VDD ≤ 3.6 V

C=10 pF, 1.62 V ≤ VDD ≤ 2.7 V

1.5

Tr/Tf

Output rise and fall time

C=50 pF, 2.7 V ≤ VDD ≤ 3.6 V

C=50 pF, 1.62 V ≤ VDD ≤ 2.7 V

C=10 pF, 2.7 V ≤ VDD ≤ 3.6 V

C=10 pF, 1.62 V ≤ VDD ≤ ≤2.7 V

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