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ST72681/R21 Datasheet(PDF) 27 Page - STMicroelectronics

Part # ST72681/R21
Description  USB 2.0 high-speed Flash drive controller
PDF  32 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72681/R21 Datasheet(HTML) 27 Page - STMicroelectronics

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ST72681
Electrical characteristics
27/32
7.9.2
Universal serial bus interface (USB)
Table 24.
DC characteristics
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
IDDsuspend Suspend current
VDD33 = 3.3V, Powerdown
mode, 25°C (1)
1.
The values provided do not take into account the current through both the 1.5k
Ω pull-up resistor (on the
device-side) and the 15k
Ω pull-down resistor (on the host-side).
60
90
190
uA
RPU
Pull-up resistor (2)
2.
Not tested in production, guaranteed by characterization.
1.5
k
Ω
Full speed mode
VTERM
Termination voltage
0.8
2.0
V
VOH
High level output voltage
2.8
3.6
V
VOL
Low level output voltage
0.8
V
VCRS
Crossover voltage
1.3
2.0
V
High speed mode
VHSOH
HS data signalling high
400
mV
VHSOL
HS data signalling low
5
mV
Table 25.
Timing characteristics
Symbol
Parameter
Conditions
Min.
Max.
Unit
Full speed mode
tFR
Rise time
CL= 50 pF
4
20
ns
tFF
Fall time
CL= 50 pF
4
20
ns
High speed mode
tHSR
Rise time
500 (1)
1.
Not tested in production, guaranteed by characterization.
ps
tHSF
Fall time
500 (1)
ps
tHSDRAT
HS data rate
479.76
480.24
Mb/s
Table 26.
USB High Speed Transmit Waveform requirements
Voltage Level (DP - DN)
Time
Unit Interval (UI)
-
2.082 to 2.084 ns
Level 1
475 mV
-
Level 2
-475 mV
-
Point 1
0V
5% UI
Point 2
0V
95% UI
Point 3
300 mV
35% UI
Point 4
300 mV
65% UI
Point 5
-300 mV
35% UI
Point 6
-300 mV
65% UI



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