PIC18F4550ESOSQTP datasheet(385/438 Pages) MICROCHIP

385 / 438 page

DS39632E-page 383

PIC18F2455/2550/4455/4550

TABLE 28-4:

USB MODULE SPECIFICATIONS

TABLE 28-5:

USB INTERNAL VOLTAGE REGULATOR SPECIFICATIONS

Operating Conditions: -40°C < TA < +85°C (unless otherwise stated).

Param

No.

Sym

Characteristic

Min

Typ

Max

Units

Comments

D313

VUSB

USB Voltage

3.0

—

3.6

Voltage on pin must be in this

range for proper USB

operation

D314

IIL

Input Leakage on D+ and D-

pins

——

±1

μAVSS ≤ VPIN ≤ VDD;

pin at high-impedance

D315

VILUSB

Input Low Voltage for USB

Buffer

——

0.8

For VUSB range

D316

VIHUSB Input High Voltage for USB

Buffer

2.0

—

For VUSB range

D317

VCRS

Crossover Voltage

1.3

2.0

Voltage range for D+ and D-

crossover to occur

D318

VDIFS

Differential Input Sensitivity

—

0.2

The difference between D+

and D- must exceed this value

while VCM is met

D319

VCM

Differential Common Mode

Range

0.8

—

2.5

D320

ZOUT

Driver Output Impedance

—

D321

VOL

Voltage Output Low

0.0

—

0.3

1.5 k

Ω load connected to 3.6V

D322

VOH

Voltage Output High

2.8

—

3.6

15 k

Ω load connected to

ground

Operating Conditions: -40°C < TA < +85°C (unless otherwise stated).

Param

No.

Sym

Characteristics

Min

Typ

Max

Units

Comments

D323

VUSBANA Regulator Output Voltage

3.0

—

3.6

VDD > 4.0V(1)

D324

CUSB

External Filter Capacitor

Value (VUSB to VSS)

0.22

0.47

12(2)

μF

Ceramic or other low-ESR

capacitor recommended

Note 1:

If device VDD is less than 4.0V, the internal USB voltage regulator should be disabled and an external

3.0-3.6V supply should be provided on VUSB if the USB module is used.

This is a recommended maximum for start-up time and in-rush considerations. When the USB regulator is

disabled, there is no maximum.

PIC18F4550ESOSQTP Datasheet(PDF) 385 Page - Microchip Technology

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