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ST7263 Datasheet(PDF) 100 Page - STMicroelectronics

Part # ST7263
Description  LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C
PDF  109 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7263 Datasheet(HTML) 100 Page - STMicroelectronics

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COMMUNICATION INTERFACE CHARACTERISTICS (Cont’d)
Figure 44. 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 (Elec-
trical) of the USB specification (version 1.1).
USB: Low speed electrical characteristics
Parameter
Symbol
Conditions
Min
Max
Unit
Driver characteristics:
Rise time
tr
Note 1,CL=50 pF
75
ns
Note 1, CL=600 pF
300
ns
Fall Time
tf
Note 1, CL=50 pF
75
ns
Note 1, CL=600 pF
300
ns
Rise/ Fall Time matching
trfm
tr/tf
80
120
%
Output signal Crossover
Voltage
VCRS
1.3
2.0
V
Differential
Data Lines
VSS
tf
tr
Crossover
points
VCRS



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