STM32WB10CCU5 datasheet(89/110 Pages) STMICROELECTRONICS

89 / 110 page

DS13259 Rev 2

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STM32WB10CC

Electrical characteristics

102

6.3.17

NRST pin characteristics

The NRST pin input driver uses the CMOS technology. It is connected to a permanent



pull-up resistor, RPU.

Unless otherwise specified, the parameters given in the table below are derived from tests

performed under the ambient temperature and supply voltage conditions summarized in

Table 20: General operating conditions.

Fmax

Maximum frequency

C=50 pF, 2.7 V ≤ VDD ≤ 3.6 V

MHz

C=50 pF, 2.0 V ≤ VDD ≤ 2.7 V

C=10 pF, 2.7 V ≤ VDD ≤ 3.6 V

C=10 pF, 2.0 V ≤ VDD ≤ 2.7 V

Tr/Tf

Output rise and fall time

C=50 pF, 2.7 V ≤ VDD ≤ 3.6 V

C=50 pF, 2.0 V ≤ VDD ≤ 2.7 V

C=10 pF, 2.7 V ≤ VDD ≤ 3.6 V

4.5

C=10 pF, 2.0 V ≤ VDD ≤ 2.7 V

Fmax

Maximum frequency

C=50 pF, 2.7 V ≤ VDD ≤ 3.6 V

MHz

C=50 pF, 2.0 V ≤ VDD ≤ 2.7 V

C=10 pF, 2.7 V ≤ VDD ≤ 3.6 V

100(3)

C=10 pF, 2.0 V ≤ VDD ≤ 2.7 V

37.5

Tr/Tf

Output rise and fall time

C=50 pF, 2.7 V ≤ VDD ≤ 3.6 V

5.8

C=50 pF, 2.0 V ≤ VDD ≤ 2.7 V

C=10 pF, 2.7 V ≤ VDD ≤ 3.6 V

2.5

C=10 pF, 2.0 V ≤ VDD ≤ 2.7 V

Fmax

Maximum frequency

C=30 pF, 2.7 V ≤ VDD ≤ 3.6 V

120(3)

MHz

C=30 pF, 2.0 V ≤ VDD ≤ 2.7 V

C=10 pF, 2.7 V ≤ VDD ≤ 3.6 V

180(3)

C=10 pF, 2.0 V ≤ VDD ≤ 2.7 V

75(3)

Tr/Tf

Output rise and fall time

C=30 pF, 2.7 V ≤ VDD ≤ 3.6 V

3.3

C=30 pF, 2.0 V ≤ VDD ≤ 2.7 V

C=10 pF, 2.7 V ≤ VDD ≤ 3.6 V

1.7

C=10 pF, 2.0 V ≤ VDD ≤ 2.7 V

3.3

1. The maximum frequency is defined with (Tr+ Tf) ≤ 2/3 T, and Duty cycle comprised between 45 and 55%.

2. The fall and rise time are defined, respectively, between 90 and 10%, and between 10 and 90% of the

output waveform.

3. This value represents the I/O capability but the maximum system frequency is limited to 64 MHz.

Table 63. I/O AC characteristics(1)(2) (continued)

Speed Symbol

Parameter

Conditions

Min

Max

Unit

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