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SUMMARY DESCRIPTION

The uPSD321x Series combines a fast 8051-based microcontroller with a flexible memory structure, programmable logic, and a rich peripheral mix including USB, to form an ideal embedded controller. At its core is an industry-standard 8032 MCU operating up to 40MHz.

FEATURES SUMMARY

■ FAST 8-BIT 8032 MCU

– 40MHz at 5.0V, 24MHz at 3.3V

– Core, 12-clocks per instruction

■ DUAL FLASH MEMORIES WITH MEMORY

MANAGEMENT

– Place either memory into 8032 program

address space or data address space

– READ-while-WRITE operation for In-Application Programming and EEPROM

emulation

– Single voltage program and erase

– 100K minimum erase cycles, 15-year

retention

■ CLOCK, RESET, AND SUPPLY

MANAGEMENT

– SRAM is Battery Backup capable

– Normal, Idle, and Power Down Modes

– Power-on and Low Voltage reset

supervisor

– Programmable Watchdog Timer

■ PROGRAMMABLE LOGIC, GENERAL

PURPOSE

– 16 macrocells

– Implements state machines, glue-logic,

and so forth

■ COMMUNICATION INTERFACES

– I2C Master/Slave bus controller

– Two UARTs with independent baud rate

– Six I/O ports with up to 46 I/O pins

– 8032 Address/Data bus available on

TQFP80 package

– 5 PWM outputs, 8-bit resolution

– USB v1.1, low-speed 1.5Mbps, 3

endpoints (uPSD3212A only)

Figure 1. Packages

■ JTAG IN-SYSTEM PROGRAMMING

– Program the entire device in as little as

10 seconds

■ A/D CONVERTER

– Four channels, 8-bit resolution, 10?s

■ TIMERS AND INTERRUPTS

– Three 8032 standard 16-bit timers

– 10 Interrupt sources with two external

interrupt pins

■ Single Supply Voltage

– 4.5 to 5.5V

– 3.0 to 3.6V