Ultra Fast USB 2.0 SD/MMC Flash Media Controller

Datasheet

Revision 1.0 (05-27-08)

18

SMSC USB2244/USB2244i

DATASHEET

Note 7.4

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

Note 7.5

See The USB 2.0 Specification, Chapter 7, for USB DC electrical characteristics

Note 7.6

RBIAS is a 3.3V tolerant analog pin.

Note 7.7

Output current range is controlled by program software, software disables FET during short

circuit condition.

Note 7.8

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

I/O12, I/O12PU & I/O12PD Type

Buffer

Low Output Level

High Output Level

Output Leakage

Pull Down

Pull Up

PD

PU

- 0.4

-10

72

58

0.4

+10

V

V

µA

μA

μA

(Note 7.4)

IO-U

(Note 7.5)

I-R

(Note 7.6)

I/O200

Integrated Power FET for

GPIO10

High Output Current Mode

Low Output Current Mode

(Note 7.7)

On Resistance

(Note 7.7)

Output Voltage Rise Time

200

100

2.1

800

mA

mA

Ω

μs

Supply Current Unconfigured

80

90

mA

Supply Current Active

Full Speed

High Speed

110

135

140

165

mA

mA

Supply Current Suspend

350

700

µA

Industrial Temperature Suspend

350

900

µA

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

COMMENTS