4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs

Datasheet

SMSC USB2227/USB2228

21

Revision 1.91 (10-13-06)

DATASHEET

Chapter 6 DC Parameters

6.1

Maximum Guaranteed Ratings

Note: Stresses above the specified parameters may cause permanent damage to the device. This is

a stress rating only and functional operation of the device at any condition above those

indicated in the operation sections of this specification is not implied.

Note: When powering this device from laboratory or system power supplies, it is important that the

Absolute Maximum Ratings not be exceeded or device failure can result. Some power supplies

exhibit voltage spikes on their outputs when the AC power is switched on or off. In addition,

voltage transients on the AC power line may appear on the DC output. When this possibility

exists, it is suggested that a clamp circuit be used.

PARAMETER

SYMBOL

MIN

MAX

UNITS

COMMENTS

Storage

Temperature

-55

150

°C

Lead

Temperature

325

°C

Soldering < 10 seconds

3.3V supply

voltage

-0.5

4.0

V

Voltage on

GPIO3 &

USBDP/DM

pins

-0.5

(3.3V supply voltage + 2)

≤ 6V

Voltage on

GPIO8,10&11

-0.5

V

When internal power FET

operation of these pins is

enabled, these pins may be

simultaneously shorted to

ground or any voltage up to

3.63V indefinitely, without

damage to the device as

is less than 70°C.

Voltage on any

signal pin

-0.5

V

Voltage on

XTAL1

-0.5

4.0

V

Voltage on

XTAL2

-0.5

V