1–1

1 Introduction

The TUSB3210 has 8k

× 8 RAM space for application development. A ROM based version of the TUSB3210 has 8k

× 8 ROM space for predeveloped customer specific production applications. In addition, the programmability of the

TUSB3210 makes it flexible enough to use for various other general USB I/O applications. Unique vendor

identification and product identification (VID/PID) may be selected without the use of an external EEPROM. Using

a 12 MHz crystal, the onboard oscillator generates the internal system clocks. The device may be programmed via

downloaded from a host PC via USB. The popular 8052-based microprocessor allows several third party standard

tools to be used for application development. In addition, the vast amounts of application code available in the general

market may also be utilized (this may or may not require some code modification due to hardware variations).

1.1

Features

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Multiproduct support with one code and one chip (up to 16 products with one chip)

•

Fully compliant with the USB release 1.1 specification

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Supports USB suspend/resume and remote wake-up operation

•

Integrated 8052 Microcontroller with:

–

256

× 8 RAM for internal data

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8k

–

512

× 8 shared RAM used for data buffers and endpoint descriptor blocks (EDB) [2]

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Four 8052 GPIO ports, Port 0,1, 2 and 3

–

–

Watchdog timer

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Operates from a 12 MHz crystal

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On-chip PLL generates 48/12 MHz

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Supports a total of 4 input and 4 output endpoints

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Power-down mode

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Single 3.3 V operation [3]

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64-pin TQFP package

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Applications include keyboard, bar code reader, flash memory reader, general-purpose controller

[1] The TUSB3210 has 8K x 8 RAM for development.

[2] This is the buffer space for USB packet transactions.

[3] 1.8 V required only to support suspend mode.