STM32L15XCC datasheet(95/136 Pages) STMICROELECTRONICS

No de pièce	STM32L15XCC

Description	Ultra-low-power 32-bit MCU ARM®-based Cortex®-M3, 256KB Flash, 32KB SRAM, 8KB EEPROM, LCD, USB, ADC, DAC

PDF	136 Pages

Scroll/Zoom	100%

Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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95 / 136 page

DocID022799 Rev 13

95/136

STM32L151xC STM32L152xC

Electrical characteristics

109

USB characteristics

The USB interface is USB-IF certified (full speed).

Figure 25. USB timings: definition of data signal rise and fall time

Table 51. USB startup time

Symbol

Parameter

Max

Unit

tSTARTUP(1)

1. Guaranteed by design.

USB transceiver startup time

µs

Table 52. USB DC electrical characteristics

Symbol

Parameter

Conditions

Min.(1)

1. All the voltages are measured from the local ground potential.

Max.(1)

Unit

Input levels

VDD

USB operating voltage

3.0

3.6

VDI(2)

2. Guaranteed by characterization results.

Differential input sensitivity

I(USB_DP, USB_DM)

0.2

VCM(2)

Differential common mode range Includes VDI range

0.8

2.5

VSE(2)

Single ended receiver threshold

1.3

2.0

Output levels

VOL(3)

3. Guaranteed by test in production.

Static output level low

RL of 1.5 kΩ to 3.6 V(4)

4. RL is the load connected on the USB drivers.

-0.3

VOH(3)

Static output level high

RL of 15 kΩ to VSS(4)

2.8

3.6

Table 53. USB: full speed electrical characteristics

Driver characteristics(1)

Symbol

Parameter

Conditions

Min

Max

Unit

Rise time(2)

CL = 50 pF

420

Fall Time(2)

CL = 50 pF

trfm

Rise/ fall time matching

tr/tf

110

VCRS

Output signal crossover voltage

1.3

2.0

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