USB2229/USB2230

DS00002252A-page 18

 2005-2016 Microchip Technology Inc.

6.0

DC PARAMETERS

6.1

Maximum Ratings

Positive Voltage on GPIO3, with respect to Ground...................................................................................................5.5V

Positive Voltage on any signal pin, with respect to Ground........................................................................................4.6V

Positive Voltage on XTAL1, with respect to Ground...................................................................................................4.0V

Positive Voltage on XTAL2, with respect to Ground...................................................................................................2.5V

Negative Voltage on GPIO8, 10 & 11, with respect to Ground (see Note 6-2) ......................................................... -0.5V

Negative Voltage on any pin, with respect to Ground .............................................................................................. -0.5V

* Stresses above the specified parameters could cause permanent damage to the device. This is a stress rating only

and functional operation of the device at any other condition above those indicated in the operation sections of this

specification is not implied.

Note 6-1

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.

Note 6-2

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 long as

6.2

DC Electrical Characteristics

(TA = 0°C - 70°C, VDD33, VDDA33 = +3.3 V ± 0.3 V, VDD18, VDD18PLL = +1.8 V ± 10%,)

Parameter

Symbol

MIN

TYP

MAX

Units

Comments

I,IPU & IPD Type Input Buffer

Low Input Level

High Input Level

Pull Down

Pull Up

PD

PU

2.0

72

58

0.8

V

V

A

A

TTL Levels

IS Type Input Buffer

Low Input Level

High Input Level

Hysteresis

2.0

500

0.8

V

V

mV

TTL Levels

ICLK Input Buffer

Low Input Level

High Input Level

2.2

0.4

V

V