The ADUCM331WFSBCPZ is a fully integrated, 8 kHz data acquisition system combining dual, high-performance, multi-channel, sigma-delta analog-to-digital converters (ADCs), 32-bit ARM® Cortex™-M3 processors, and flash memory. The ADuCM330WFS has 96 kB Flash/EE memory and the ADuCM331WFS has 128 kB Flash/EE memory. Both devices have 4 kB of data flash. Error Correcting Code (ECC) is available on all Flash and SRAM memories.

The ADUCM331WFSBCPZ is a complete system 12 V battery monitoring solution in automotive applications. The ADuCM330WFS/ADuCM331WFS integrate all the functions needed to accurately and intelligently monitor, process, and diagnose 12 V battery parameters including battery current, voltage, and temperature over a wide range of operating conditions. External system components are minimized and the device is powered directly from the 12 V battery. On-chip, low-dropout (LDO) regulators generate the supply voltages for the two integrated Σ-Δ ADCs. The ADC accurately measures battery current, voltage and temperature to characterize the state of health and charge of the vehicle battery.

The ADUCM331WFSBCPZ device uses an on-chip 16.384 MHz high frequency oscillator that provides routing of the system clock through a programmable clock divider, from which the core generates the clock operating frequency. The device also contains a 32.768 kHz oscillator for low power operation. The analog subsystem consists of an ADC and a programmable gain amplifier (PGA), which allows monitoring of various current and voltage ranges. The analog subsystem also includes an on-chip precision reference.

ADUCM331WFSBCPZ integrates a series of on-chip peripherals that can be configured under the core software to be controlled according to the requirements of the application program. These peripherals include a serial port interface (SPI) serial input/output communications controller, six general-purpose input/output (GPIO) pins, a general-purpose timer, wake-up timer, and watchdog timer.