This document describes the features and characteristics of the uPSD3234A and uPSD3234BV Flash Programmable System Devices. These devices feature a fast 8-bit 8032 microcontroller core, dual flash memories with memory management, clock, reset, and supply management, programmable logic, communication interfaces, A/D converter, timers, and interrupts.
The uPSD323x series combines a fast 8051‑based 8032 microcontroller core with dual flash memories, SRAM, programmable logic, and a rich peripheral set including USB, UARTs, ADC and PWM. It operates up to 40 MHz at 5 V (24 MHz at 3.3 V) and supports in‑application programming and EEPROM emulation.
The manual describes the device architecture, memory organization, register set, interrupt system, power‑management features, and programming interfaces such as JTAG for ISP (as little as 10 seconds) and USB low‑speed connectivity. Pin‑out diagrams and package information for the 52‑pin and 80‑pin TQFP packages are also included.
| Core MCU | 8032 8‑bit MCU |
|---|---|
| Maximum Clock Frequency | 40 MHz at 5.0 V (24 MHz at 3.3 V) |
| ADC | 4 channels, 8‑bit resolution |
| PWM Outputs | 5 outputs, 8‑bit resolution |
| UARTs | 2 UARTs with independent baud rate |
| USB Interface | USB v1.1 low‑speed 1.5 Mbps |
The device runs up to 40 MHz at 5.0 V (or 24 MHz at 3.3 V).
It provides five PWM outputs with 8‑bit resolution.
A JTAG serial interface allows ISP in as little as 10 seconds.
The USB interface is low‑speed 1.5 Mbps (USB 1.1).