ST7265X Datasheet, PDF (153/166 Pages) STMicroelectronics – LOW-POWER, FULL-SPEED USB 8-BIT MCU WITH 32K FLASH, 5K RAM, FLASH CARD I/F, TIMER, PWM, ADC, I2C, SPI

ST7265x
COMMUNICATION INTERFACE CHARACTERISTICS (Cont’d)
13.11.4 USB - Universal Bus Interface
Parameter
USB DC Electrical Characteristics
Symbol
Conditions
Min. ²⁾
Max. ²⁾
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 ¹⁾
0.3
V
Static Output High
VOH
RL of 15K ohm to V_SS ¹⁾
2.8
3.6
V
USBV_CC: voltage level ³⁾
USBV
V_DD=4.0V - 5.5V
I_LOAD Max = 3mA
3.00
3.60
V
Note 1: RL is the load connected on the USB drivers.
Note 2: All the voltages are measured from the local ground potential.
Note 3: An external decoupling capacitor (typical 100nF, min 47nF) must be connected between this pin
and USBV_SS.
FTiimguere 103. USB: Data Signal Rise and Fall
Differential
Data Lines
VCRS
Crossover
points
V_SS
tf
tr
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
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).
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