USB2502-HT datasheet(11/40 Pages) MICROCHIP

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 2007 - 2016 Microchip Technology Inc.

DS000002248A-page 11

USB2502

TABLE 4-4:

POWER, GROUND, AND NO CONNECT

Name

Symbol

Type

Function

VDDCORE3P3

VDD33CR

+3.3V I/O Power.

If the internal core 1.8V regulator is enabled, then this pin

acts as the regulator input

VDD1P8

VDD18

+1.8V core power.

If the internal regulator is enabled, then VDD18 pin 27

must have a 4.7

F (or greater) ±20% (ESR <0.1

capacitor to VSS

VDDAPLL3P3

VDDA33PLL

+3.3V Filtered analog power for the internal PLL

If the internal PLL 1.8V regulator is enabled, then this pin

acts as the regulator input

VDDAPLL1P8

VDDA18PLL

+1.8V Filtered analog power for internal PLL.

If the internal regulator is enabled, then this pin must have

a 4.7

F (or greater) ±20% (ESR <0.1capacitor to VSS

VDDA3P3

VDDA33

+3.3V Filtered analog power.

VSS

Ground.

TABLE 4-5:

BUFFER TYPE DESCRIPTIONS

Buffer

Description

Input.

IPD

Input, with a weak Internal pull-down.

IPU

Input, with a weak Internal pull-up.

Input with Schmitt trigger.

I/O8

Input/Output 8mA

Output 8mA

IOSD12

Open drain….12mA sink with Schmitt trigger, and must meet I2C-Bus

Specification Version 2.1 requirements.

ICLKx

XTAL Clock Input

OCLKx

XTAL Clock Output

I-R

RBIAS

IO-U

Defined in USB Specification.

Note: Meets USB 1.1 requirements when operating as a 1.1-compliant

device and meets USB 2.0 requirements when operating as a 2.0-

compliant device.

AIO

Analog Input/output. Per PHY test requirements.

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