STM32L100RC Datasheet, PDF (83/104 Pages) STMicroelectronics – Reset and supply management

STM32L100RC
USB characteristics
The USB interface is USB-IF certified (full speed).
Table 49. USB startup time
Symbol
Parameter
t_STARTUP(1)
USB transceiver startup time
1. Guaranteed by design, not tested in production.
Max
1
Unit
µs
Symbol
Table 50. USB DC electrical characteristics
Parameter
Conditions
Min.⁽¹⁾
Input levels
V_DD USB operating voltage
-
3.0
V_DI(2) Differential input sensitivity
I(USB_DP, USB_DM)
0.2
V_CM(2) Differential common mode range Includes V_DI range
0.8
V_SE(2) Single ended receiver threshold
-
1.3
Output levels
V_OL(3)
V_OH(3)
Static output level low
Static output level high
R_L of 1.5 kΩ to 3.6 V⁽⁴⁾
-
R_L of 15 kΩ to V_SS(4)
2.8
1. All the voltages are measured from the local ground potential.
2. Guaranteed by characterization results, not tested in production.
3. Guaranteed by test in production.
4. R_L is the load connected on the USB drivers.
Max.⁽¹⁾ Unit
3.6
V
-
2.5
V
2.0
0.3
V
3.6
Figure 20. USB timings: definition of data signal rise and fall time
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Table 51. USB: full speed electrical characteristics
Driver characteristics⁽¹⁾
Symbol
t_r
t_f
Parameter
Rise time⁽²⁾
Fall Time⁽²⁾
Conditions
Min
Max
C_L = 50 pF
4
20
C_L = 50 pF
4
20
DL
Unit
ns
ns
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