The ADuC834 is a complete smart transducer front end, integrating two high resolution 16-bit/24-bit ADCs, an 8-bit MCU, and program/data Flash/EE memory on a single chip.
The ADuC834 is a complete smart transducer front‑end that integrates two high‑resolution ADCs (16‑bit and 24‑bit), an 8052‑based MCU core, and on‑chip Flash/EE memory. It targets intelligent sensor applications such as weigh scales, portable instrumentation, and data logging, offering programmable I/O, DACs, PWM, and on‑chip temperature sensing.
The document provides detailed specifications for analog performance, power consumption, memory organization, pin functions, and package dimensions, along with programming guidelines and reliability data for the Flash/EE memory.
| Flash program memory | 62 Kbytes |
|---|---|
| Flash data memory | 4 Kbytes |
| Primary ADC resolution | 24‑bit (no missing codes) |
| Supply voltage (AVpp) – 3 V operation | 2.7 V – 3.6 V |
| Supply voltage (AVpp) – 5 V operation | 4.75 V – 5.25 V |
| Package (MQFP) | 52‑Lead, 14 mm × 14 mm |
| Flash endurance | 100 000 cycles min |
It uses an 8052 core that is compatible with the 8051 instruction set.
The device provides 26 programmable I/O lines.
The flash program memory is rated for at least 100 000 write/erase cycles.