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, 10µs
■ 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