STM32L100RB datasheet(81/103 Pages) STMICROELECTRONICS

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STM32L100C6 STM32L100R8/RB

Electrical characteristics

Figure 21. USB timings: definition of data signal rise and fall time

Table 50. 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(2)

2. To be compliant with the USB 2.0 full speed electrical specification, the USB_DP (D+) pin should be pulled

up with a 1.5 k

Ω resistor to a 3.0-to-3.6 V voltage range.

-3.0

3.6

VDI(3)

3. Guaranteed by characterization results.

Differential input sensitivity

I(USB_DP, USB_DM)

0.2

VCM(3)

Differential common mode range Includes VDI range

0.8

2.5

VSE(3)

Single ended receiver threshold

1.3

2.0

Output levels

VOL(4)

4. Guaranteed by test in production.

Static output level low

RL of 1.5 kΩ to 3.6 V(5)

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

-0.3

VOH(4)

Static output level high

RL of 15 kΩ to VSS(5)

2.8

3.6

Table 51. USB: full speed electrical characteristics

Driver characteristics(1)

1. Guaranteed by design.

Symbol

Parameter

Conditions

Min

Max

Unit

Rise time(2)

2. Measured from 10% to 90% of the data signal. For more detailed informations, please refer to USB

Specification section 7 (version 2.0).

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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