Technical specification and functional description for Analog Devices' ADuC845, ADuC847, and ADuC848 microcontrollers featuring embedded 24-/16-bit ADCs.
This document provides a comprehensive technical overview of the Analog Devices ADuC845/ADuC847/ADuC848 family of MicroConverter® devices. These are single-chip solutions integrating high-resolution Sigma-Delta analog-to-digital converters (ADCs) with an 8051-based microcontroller core, embedded Flash memory, and various peripherals.
The datasheet details the electrical characteristics, functional blocks, and operational modes for three specific variants: the ADuC845 featuring two independent 24-bit ADCs, the ADuC847 with a single 24-bit ADC, and the ADuC848 with a single 16-bit ADC. Key specifications include up to 10 analog input channels, 62 kB of on-chip Flash program memory, and support for both 3 V and 5 V operation.
| Program Memory Size | 62-kbyte on-chip Flash/EE program memory |
|---|---|
| Data RAM Size | 2304 bytes on-chip data RAM |
| ADC Resolution (ADuC848) | 16 Bits |
| Power Normal Mode Current | 4.8 mA max @ 3.6 V |
The maximum external crystal frequency supported by the on-chip programmable PLL is 12.58 MHz.
All parts in the ADuC845/ADuC847/ADuC848 family support up to 10 ADC input channels.
The device is specified for operation at either 3 V (2.7 V to 3.6 V) or 5 V (4.75 V to 5.25 V).