ST Microelectronics has expanded its µPSD3200 family of 8-bit Flash 8051-based microcontrollers to offer a complete range of 8051-class micros. The µPSD325x devices expand the SRAM from 8 to 32 KB, while the µPSD321x devices, called µPSD Lite, provide 80 KB of Flash memory and 2 KB of SRAM for lower-cost applications. The µPSD325x has up to 288 KB of Flash memory and 32 KB of SRAM. Based on ST's programmable system device (PSD) architecture, µPSD3200 devices feature dual independent banks of Flash memory up to 256 and 32 KB, respectively, capable of concurrent read-write operation, SRAM, and over 3000 gates of programmable logic with 16 macrocells. The 8032 peripheral set includes two UART channels, five 8-bit PWM units, four 8-bit ADC channels, an I2C master-slave interface, supervisory functions such as a watchdog timer and low-voltage detect, and up to 46 general-purpose I/O pins. µPSD3200 devices come 52 or 80-pin TQFP packages, operate at 5,0 and 3,3 V, and rated -40 to +85°C.
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