STM32L552CEU6PTR datasheet(236/340 Pages) STMICROELECTRONICS

236 / 340 page

Electrical characteristics

STM32L552xx

236/340

DS12737 Rev 6

Figure 41. I/O AC characteristics definition(1)

1. Refer to Table 104: I/O AC characteristics (All I/Os except FT_c).

5.3.16

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 27: General operating conditions.

Table 105. FT_c I/O AC characteristics(1)(2)

1. The I/O speed is configured using the OSPEEDRy[0] bit. Refer to the RM0438 reference manual for a

description of GPIO Port configuration register.

2. Guaranteed by design.

Speed Symbol

Parameter

Conditions

Min

Max

Unit

Fmax

Maximum

frequency

C=50 pF, 2.7 V≤VDDIOx≤3.6 V

MHz

C=50 pF, 1.6 V≤VDDIOx≤2.7 V

C=50 pF, 1.08 V≤VDDIOx≤3.6 V

0.1

Tr/Tf

Output rise and

fall time

C=50 pF, 2.7 V≤VDDIOx≤3.6 V

170

C=50 pF, 1.6 V≤VDDIOx≤2.7 V

330

C=50 pF, 1.08 V≤VDDIOx≤3.6 V

3300

Fmax

Maximum

frequency

C=50 pF, 2.7 V≤VDDIOx≤3.6 V

MHz

C=50 pF, 1.6 V≤VDDIOx≤2.7 V

C=50 pF, 1.08 V≤VDDIOx≤3.6 V

0.7

Tr/Tf

Output rise and

fall time

C=50 pF, 2.7 V≤VDDIOx≤3.6 V

C=50 pF, 1.6 V≤VDDIOx≤2.7 V

C=50 pF, 1.08 V≤VDDIOx≤3.6 V

400

MS32132V2

10%

50%

90%

10%

50%

90%

Maximum frequency is achieved if (t + t (≤ 2/3)T and if the duty cycle is (45-55%)

when loaded by the specified capacitance.

r(IO)out

f(IO)out

STM32L552CEU6PTR 数据表(PDF) 236 Page - STMicroelectronics

STM32L552CEU6PTR 数据表(HTML) 236 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载

链接网址

STM32L552CEU6PTR 数据表(PDF) 236 Page - STMicroelectronics

STM32L552CEU6PTR 数据表(HTML) 236 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表 下载

链接网址

数据表下载