ADuC841/ADuC842/ADuC843 is the MicroConverter® series 12-bit ADC and DAC products released by Analog Devices, integrating high-performance 62-kB Flash MCU
The ADuC841, ADuC842, and ADuC843 are 12‑bit microcontroller families that integrate a high‑performance ADC, dual DAC (except ADuC843), and a single‑cycle 20 MIPS 8052 core on a single chip. They are pin‑compatible upgrades of the ADuC812/ADuC831 series and are offered in 52‑lead PQFP and chip‑scale packages.
This manual contains functional descriptions, pin configurations, electrical specifications, memory organization, peripheral registers, timing diagrams, development tool information, and ordering guides. It also includes detailed ADC and DAC specifications, power‑supply requirements, and hardware design considerations.
| ADC resolution | 12 bits |
|---|---|
| ADC sampling rate | 420 kSPS |
| On‑chip Flash program memory | Up to 62 kBytes |
| On‑chip RAM | 2304 bytes user RAM |
| Core speed | 20 MIPS (single‑cycle 8052 core) |
| Power consumption (normal mode) | 4.5 mA @ 3 V |
| Operating temperature range | -40 °C to +85 °C |
| DAC resolution | 12 bits (ADuC841/842 only) |
The devices use a single‑cycle 20 MIPS 8052 core compatible with the 8051 instruction set.
Each part provides up to 62 kBytes of non‑volatile Flash/EE program memory.
The devices are rated for -40 °C to +85 °C operation.
ADuC841 and ADuC842 have dual 12‑bit DACs; ADuC843 does not include DAC outputs.