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ST7SCR1E4 Arkusz danych(PDF) 89 Page - STMicroelectronics

Numer części ST7SCR1E4
Szczegółowy opis  8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER
PDF  102 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7SCR1E4 Arkusz danych(HTML) 89 Page - STMicroelectronics

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14.8 COMMUNICATION INTERFACE CHARACTERISTICS
14.8.1 USB - Universal Bus Interface
Note 1: RL is the load connected on the USB drivers.
Note 2: All the voltages are measured from the local ground potential.
Figure 45. USB: Data Signal Rise and Fall Time
Note1: Measured from 10% to 90% of the data signal. For more detailed informations, please refer to
Chapter 7 (Electrical) of the USB specification (version 1.1).
USB DC Electrical Characteristics
Parameter
Symbol
Conditions
Min.
Max.
Unit
Input Levels:
Differential Input Sensitivity
VDI
I(D+, D-)
0.2
V
Differential Common Mode Range
VCM
Includes VDI range
0.8
2.5
V
Single Ended Receiver Threshold
VSE
1.3
2.0
V
Output Levels
Static Output Low
VOL
RL of 1.5K ohms to 3.6v
0.3
V
Static Output High
VOH
RL of 15K ohm to VSS
2.8
3.6
V
USBVCC: voltage level
USBV
VDD=5v
3.00
3.60
V
USB: Full speed electrical characteristics
Parameter
Symbol
Conditions
Min
Max
Unit
Driver characteristics:
Rise time
tr
Note 1,CL=50 pF
4
20
ns
Fall Time
tf
Note 1, CL=50 pF
4
20
ns
Rise/ Fall Time matching
trfm
tr/tf
90
110
%
Output signal Crossover
Voltage
VCRS
1.3
2.0
V
Differential
Data Lines
VSS
tf
tr
Crossover
points
VCRS



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