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STR751FR2T6 数据表(PDF) 70 Page - STMicroelectronics

部件名 STR751FR2T6
功能描述  ARM7TDMI-S??32-bit MCU with Flash, SMI, 3 std 16-bit timers, PWM timer, fast 10-bit ADC, I2C, UART, SSP, USB and CAN
PDF  81 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STR751FR2T6 数据表(HTML) 70 Page - STMicroelectronics

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Electrical parameters
STR750Fxx STR751Fxx STR752Fxx STR755Fxx
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5.3.11
USB characteristics
The USB interface is USB-IF certified (Full Speed).
Figure 41.
USB: data signal rise and fall time
Table 42.
USB startup time
Symbol
Parameter
Conditions
Max
Unit
tSTARTUP
USB transceiver startup time
1
µs
Table 43.
USB characteristics
USB DC Electrical Characteristics
Symbol
Parameter
Conditions
Min.(1)(2)
1.
All the voltages are measured from the local ground potential.
2.
It is important to be aware that the DP/DM pins are not 5 V tolerant. As a consequence, in case of a a
shortcut with Vbus (typ: 5.0V), the protection diodes of the DP/DM pins will be direct biased . This will not
damage the device if not more than 50 mA is sunk for longer than 24 hours but the reliability may be
affected.
Max.(1)(2) Unit
Input Levels
VDI
Differential Input Sensitivity
I(DP, DM)
0.2
V
VCM
Differential Common Mode
Range
Includes VDI range
0.8
2.5
VSE
Single Ended Receiver
Threshold
1.3
2.0
Output Levels
VOL
Static Output Level Low
RL of 1.5 kΩ to 3.6V
(3)
3.
RL is the load connected on the USB drivers
0.3
V
VOH
Static Output Level High
RL of 15 kΩ to VSS
(3)
2.8
3.6
Table 44.
USB: Full speed electrical characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
Driver characteristics:
tr
Rise time(1)
CL=50 pF
420
ns
tf
Fall Time1)
CL=50 pF
4
20
ns
Differential
Data Lines
VSS
tf
tr
Crossover
points
VCRS



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