UPSD321xx description
The UPSD321xx 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.
A JTAG serial interface is used for In-System Programming (ISP) in as little as 10 seconds, perfect for manufacturing and lab development.

FEATUREs
■ Fast 8-bit 8032 MCU
    – 40 MHz at 5.0 V, 24 MHz at 3.3 V
    – 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 inapplication programming and EEPROM emulation
    – Single voltage program and erase
    – 100 K minimum erase cycles, 15-year retention
■ Clock, reset, and supply management
    – 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, etc.
■ Timers and interrupts
    – Three 8032 standard 16-bit timers
    – 10 Interrupt sources with two external interrupt pins
■ A/D converter
    – Four channels, 8-bit resolution, 10 µs
■ Communication interfaces
    – USB v1.1, low-speed 1.5 Mbps, 3 endpoints
    – 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
■ JTAG in-system programming
    – Program the entire device in as little as 10 seconds
■ Single supply voltage
    – 4.5 to 5.5 V
    – 3.0 to 3.6 V
■ ECOPACK® packages