MCP2221 datasheet(61/80 Pages) MICROCHIP

61 / 80 page

 2015 Microchip Technology Inc.

DS20005292B-page 61

MCP2221

FIGURE 4-1:

POR AND POR REARM WITH SLOW RISING VDD

VDD

VPOR

VPORR

VSS

NPOR(1)

TPOR(3)

POR REARM

Note 1: When NPOR is low, the device is held in Reset.

2: TPOR 1 µs typical.

3: TVLOW 2.7 µs typical.

TVLOW(2)

TABLE 4-1:

USB MODULE SPECIFICATIONS

DC Characteristics

Operating Conditions (unless otherwise indicated):

3.0V

 VDD  5.5V at -40°C  TA  +85°C (I-Temp)

Param.

No.

Characteristic

Sym.

Min.

Typ.

Max.

Units

Conditions

D313

USB Voltage

VUSB

3.0

—

3.6

Voltage on the VUSB pin must

be in this range for proper

USB operation

D314

Input Leakage on Pin

IIL

——

±1

μAVSS

 VPIN  VDD pin at

high impedance

D315

Input Low Voltage

for USB Buffer

VILUSB

——

0.8V

For VUSB range

D316

Input High Voltage

for USB Buffer

VIHUSB

2.0

—

For VUSB range

D318

Differential Input

Sensitivity

VDIFS

—

0.2

The difference between D+

and D- must exceed this value

while VCM is met

D319

Differential Common

Mode Range

VCM

0.8

—

2.5

D320

Driver Output

Impedance(1)

ZOUT

—

D321

Voltage Output Low

VOL

0.0

—

0.3

1.5 k

 load connected to 3.6V

D322

Voltage Output High

VOH

2.8

—

3.6

1.5 k

 load connected to

ground

Note 1:

The D+ and D- signal lines have been built-in impedance matching resistors. No external resistors,

capacitors or magnetic components are necessary on the D+/D- signal paths between the MCP2221

family device and the USB cable.

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