STM32L433CB datasheet(192/225 Pages) STMICROELECTRONICS

192 / 225 page

Electrical characteristics

STM32L433xx

192/225

DS11449 Rev 5

Figure 42. SD default mode

USB characteristics

The STM32L433xx USB interface is fully compliant with the USB specification version 2.0

and is USB-IF certified (for Full-speed device operation).

CAN (controller area network) interface

Refer to Section 6.3.14: I/O port characteristics for more details on the input/output alternate

function characteristics (CAN_TX and CAN_RX).

SWPMI characteristics

The Single Wire Protocol Master Interface (SWPMI) and the associated SWPMI_IO

transceiver are compliant with the ETSI TS 102 613 technical specification.

ai14888

D, CMD

(output)

tOVD

tOHD

Table 101. USB electrical characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDUSB

USB transceiver operating voltage

3.0(2)

-3.6

Tcrystal_less USB crystal less operation temperature

-15

RPUI

Embedded USB_DP pull-up value during idle

900

1250

1600

Ω

RPUR

Embedded USB_DP pull-up value during

reception

1400

2300

3200

ZDRV(3)

Output driver impedance(4)

Driving high

and low

Ω

1. TA = -40 to 125 °C unless otherwise specified.

2. The STM32L433xx USB functionality is ensured down to 2.7 V but not the full USB electrical characteristics

which are degraded in the 2.7-to-3.0 V voltage range.

3. Guaranteed by design.

4. No external termination series resistors are required on USB_DP (D+) and USB_DM (D-); the matching

impedance is already included in the embedded driver.

Table 102. SWPMI electrical characteristics

Symbol

Parameter

Conditions

Min

Typ Max Unit

tSWPSTART SWPMI regulator startup time

SWP Class B

2.7 V ≤ VDD ≤ 3,3V

300

μs

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