STM32U375CE datasheet(171/222 Pages) STMICROELECTRONICS

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•

I3C SDR-only as controller

•

I3C SDR-only as target

•

I3C SCL bus clock frequency up to 12.5 MHz

The parameters given in Table 118 below are obtained with the following configuration:

•

Output speed is set to OSPEEDRy[1:0] = 10

•

I/O Compensation cell activated

•

HSLV activated when VDD ≤ 2.7 V

•

Voltage scaling range 1

The I3C timings are in line with the MIPI specification, except for the ones given in Table 118, I3C open-drain

measured timing. For tSU_OD, this can be mitigated by increasing the corresponding SCL low duration in the

I3C_TIMINGR0 register. For further details refer to AN5879.

Table 118. Open drain timing measurements

Evaluated by characterization. Not tested in production.

Symbol

Parameter

Conditions

Min

Unit

tSU_OD

SDA data setup time during open drain mode

Controller

1.71 V ≤ VDDIOX ≤ 3.6 V

21(1)

Controller

1.08 V ≤ VDDIO2 ≤ 1.32 V

24.5(1)

1. SDA data setup time during open drain mode is required to be Min 3ns in the MIPI specification.

Table 119. Push pull timing measurements

Evaluated by characterization. Not tested in production.

Symbol

Parameter

Conditions

Max

Unit

tSCO

Clock in to data out for

target

Target

1.71 V ≤ VDDIOX ≤ 3.6

11.5

Target

1.2 V ≤ VDDIO2 ≤ 1.32 V

Target

1.08 V ≤ VDDIO2 ≤ 1.2 V

14(1)

1. tSCO clock in to data out is required to be Max 12 ns in MIPI specification.

5.3.33

USART characteristics

Unless otherwise specified, the parameters given in Table 120 are derived from tests performed under the

ambient temperature, fPCLKx frequency and VDD supply voltage conditions summarized in not found, with the

following configuration:

•

Output speed set to OSPEEDRy[1:0] = 10

•

Capacitive load CL = 30 pF

•

Measurement points done at 0.5 × VDD level

•

I/O compensation cell activated

•

HSLV activated when VDD ≤ 2.7 V

•

Voltage scaling range 1

Refer to Section 5.3.14: I/O port characteristics for more details on the input/output alternate function

characteristics (NSS, CK, TX, RX for USART).

STM32U375xx

Electrical characteristics

DS14861 - Rev 2

page 171/222

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