STMicroelectronics Discovery kit for STM32L151/152 line - with STM32L152RC MCU STM32L152C-DISCO STM32L152C-DISCO Hoja De Datos
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STM32L152C-DISCO
Electrical characteristics
STM32L15xCC STM32L15xRC STM32L15xUC STM32L15xVC
DocID022799 Rev 6
Figure 27. USB timings: definition of data signal rise and fall time
Table 54. USB: full speed electrical characteristics
Driver characteristics
(1)
1. Guaranteed by design, not tested in production.
Symbol
Parameter
Conditions
Min
Max
Unit
t
r
Rise time
(2)
2. Measured from 10% to 90% of the data signal. For more detailed informations, please refer to USB
Specification - Chapter 7 (version 2.0).
C
L
= 50 pF
4
20
ns
t
f
Fall Time
C
L
= 50 pF
4
20
ns
t
rfm
Rise/ fall time matching
t
r
/t
f
90
110
%
V
CRS
Output signal crossover voltage
1.3
2.0
V
ai14137
tf
Differen tial
Data L ines
VS S
VCRS
tr
Crossover
points