USB2244 Standard Microsystems Corp., USB2244 Datasheet - Page 16

• Manufacturer Part Number: USB2244
• Description: Usb2244/usb2244i Ultra Fast Usb 2.0 Sd/mmc Flash Media Controller
• Manufacturer: Standard Microsystems Corp.

Revision 1.0 (05-27-08)
7.2
Operating
Temperature
Commercial Part
Industrial Part
3.3V supply voltage
3.3V supply rise time
Voltage on
USB+ and USB- pins
Voltage on any signal
pin
Voltage on XTAL1
Voltage on XTAL2
PARAMETER
Note 7.3
Recommended Operating Conditions
Voltage
VDD33
VSS
A 3.3V regulator with an output tolerance of 1% must be used if the output of the internal
power FET’s must support a 5% tolerance.
T
T
V
V
t
SYMBOL
RT
A
A
DD33,
DDA33
10%
t
Figure 7.1 Supply Rise Time Model
10%
0
-40
3.0
0
-0.3
-0.3
-0.3
-0.3
MIN
DATASHEET
t
RT
70
85
3.6
400
5.5
V
V
V
16
DD33
DDA33
DD18
MAX
t
Ultra Fast USB 2.0 SD/MMC Flash Media Controller
90%
°C
°C
V
μs
V
V
V
V
UNITS
90%
3.3V
Time
(Note
If any 3.3V supply voltage drops
below 3.0V, then the MAX
becomes:
(3.3V supply voltage) + 0.5 ≤ 5.5
7.3)
100%
COMMENTS
SMSC USB2244/USB2244i
Datasheet