STM32WBA50KG datasheet(88/110 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32WBA50KG

88/110

DS14688 Rev 1

Figure 16. Output AC characteristics definition

5.3.17

NRST pin characteristics

The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up

resistor, RPU.

Unless otherwise specified, the parameters given in Table 64 are at ambient temperature

and under the supply voltage conditions summarized in Table 26.

10(4)

Fmax

Maximum frequency

CL = 30 pF, 2.7 V ≤ VDD ≤ 3.6 V

100

MHz

CL = 30 pF, 1.58 V ≤ VDD < 2.7 V

CL = 10 pF, 2.7 V ≤ VDD ≤ 3.6 V

100

CL = 10 pF, 1.58 V ≤ VDD < 2.7 V

tr/tf

Output rise and fall

time

CL = 30 pF, 2.7 V ≤ VDD ≤ 3.6 V

3.3

CL = 30 pF, 1.58 V ≤ VDD < 2.7 V

6.0

CL = 10 pF, 2.7 V ≤ VDD ≤ 3.6 V

2.0

CL = 10 pF, 1.58 V ≤ VDD < 2.7 V

4.1

Fm+

Fmax

Maximum frequency CL = 550 pF, 1.58 V ≤ VDD ≤ 3.6 V

MHz

Output fall time(5)

CL = 550 pF, 1.58 V ≤ VDD ≤ 3.6 V

100

CL = 100 pF, 1.58 V ≤ VDD < 3.6 V

1. Specified by design, not tested in production.

2. PB15 and PH3 output and input frequency must not exceed 16 kHz, PC14 and PC15 output and input

frequency must not exceed 250 kHz, for these IOs OSPEED must be kept at low speed.

3. The I/O speed is configured using the OSPEED bits, Fm+ is configured in SYSCFG. Refer to the product

reference manual for the description.

4. I/O compensation system enabled.

5. The fall time is defined between 70% and 30% of the output waveform according to the I2C specification.

Table 63. Output AC characteristics(1)(2) (continued)

Speed(3) Symbol

Parameter

Conditions

Min

Max

Unit

MS32132V4

Maximum frequency is achieved with a duty cycle at (45 - 55%) when loaded by the

specified capacitance.

10%

50%

90%

10%

50%

90%

r(IO)out

f(IO)out

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