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

Datasheet

Revision 1.91 (10-13-06)

24

SMSC USB2227/USB2228

DATASHEET

Note 6.1

Output leakage is measured with the current pins in high impedance.

Note 6.2

See Appendix A for USB DC electrical characteristics.

Note 6.3

The Maximum power dissipation parameters of the package should not be exceeded

Note 6.4

The assignment of each Integrated Card Power FET to a designated Card Connector is

controlled by both firmware and the specific board implementation. Firmware will default to

the settings listed in Table 8.1, “GPIO Usage (ROM Rev 0x00),” on page 27.

6.3

Capacitance

Integrated Power FET for

GPIO11 (only when used

with Firmware version -04 or

later)

Output Current

Short Circuit Current Limit

On Resistance

Output Voltage Rise Time

200

181

2.1

800

mA

mA

Ω

μs

GPIO11;

GPIO11;

GPIO11;

GPIO11;

Supply Current Unconfigured

55

80

mA

Supply Current Active

(Full Speed)

75

90

mA

Supply Current Active

(High Speed)

75

100

mA

Supply Current Standby

305

420

µA

LIMITS

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

TEST CONDITION

Clock Input Capacitance

20

pF

All pins except USB pins

(and pins under test tied to

AC ground)

Input Capacitance

10

pF

Output Capacitance

20

pF

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

COMMENTS