ADuC831 is an MCU with 8051 core, 12-bit ADC, 247 kSPS, 212DAC
The ADuC831 is a fully integrated data‑acquisition system featuring an 8‑channel 247 kSPS 12‑bit ADC, dual 12‑bit DACs, and an 8052‑compatible MCU core with on‑chip flash and RAM. It operates from 3 V or 5 V and includes peripherals such as UART, I²C, SPI, PWM, watchdog timer, and power‑supply monitor.
The document provides a complete specification sheet, including pin configurations, absolute maximum ratings, ordering information, memory organization, and detailed electrical characteristics. It also contains design guidelines, typical performance curves, and application notes for optical networking, base‑station systems, and precision instrumentation.
| ADC resolution | 12 bits |
|---|---|
| Number of ADC channels | 8 |
| DAC resolution | 12 bits (monotonic) |
| Flash program memory | 62 kBytes |
| Flash data memory | 4 kBytes |
| Operating voltage | 3 V and 5 V |
| Maximum clock frequency | 16 MHz |
The ADuC831BS version operates from –40 °C to +125 °C, while the ADuC831BCP version operates from –40 °C to +85 °C.
The device provides eight single‑ended analog input channels (ADC0–ADC7).
In normal mode at 5 V, the DVDD current is up to 12 mA (MCLKIN = 16 MHz).