ADuCM330WFS/ADuCM331WFS

Data Sheet

Rev. A | Page 4 of 17

GENERAL DESCRIPTION

The ADuCM330WFS/ADuCM331WFS are fully integrated,

8 kHz data acquisition systems that incorporate dual, high

performance multichannel Σ-Δ analog-to-digital converters

(ADCs), a 32-bit Arm® Cortex™-M3 processor, and flash. The

ADuCM330WFS has 96 kB Flash/EE, and the ADuCM331WFS

has 128 kB Flash/EE memory. Both have 4 kB data flash. Error

correction code (ECC) is available on all flash and SRAM

memories.

The ADuCM330WFS/ADuCM331WFS are complete system

solutions for battery monitoring in 12 V automotive

applications.

The ADuCM330WFS/ADuCM331WFS integrate all of the

required features to precisely and intelligently monitor, process,

and diagnose 12 V battery parameters including battery

current, voltage, and temperature over a wide range of

operating conditions.

Minimizing external system components, the device is powered

directly from a 12 V battery. On-chip, low dropout (LDO)

regulators generate the supply voltage for two integrated Σ-Δ

ADCs. The ADCs precisely measure battery current, voltage,

and temperature to characterize the state of the health and the

charge of the car battery.

The device operates from an on-chip, 16.384 MHz high

frequency oscillator that supplies the system clock that is routed

through a programmable clock divider, from which the core

clock operating frequency is generated. The device also contains

a 32 kHz oscillator for low power operation.

The analog subsystem consists of an ADC with a programmable

gain amplifier (PGA) that allows the monitoring of various

current and voltage ranges. The analog subsystem also includes

a precision reference on chip.

The ADuCM330WFS/ADuCM331WFS integrate a range of

on-chip peripherals that can be configured under core software

control as required in the application. These peripherals include

a serial port interface (SPI) serial input/output communication

controller, six general-purpose input/output (GPIO) pins, one

general-purpose timer, a wake-up timer, and a watchdog timer.

See the ADuCM330WFS/ADuCM331WFS Hardware Reference

Manual for more information.

The ADuCM330WFS/ADuCM331WFS are designed to operate

in battery-powered applications where low power operation is

critical. The microcontroller core can be configured in normal

operating mode, resulting in an overall system current

consumption of 18.5 mA when all peripherals are active. The

device can also be configured in a number of low power

operating modes under direct program control, consuming

<100 μA.

The ADuCM330WFS/ADuCM331WFS also include a local

interconnect network (LIN) physical interface for single-wire,

high voltage communications in automotive environments. The

LIN transceiver is compliant to LIN 2.2 and Society of

Automotive Engineers (SAE) J2602-2.

The device operates from an external 3.6 V to 19 V (on VDD,

Pin 26) voltage supply and is specified over the −40°C to

+115°C temperature range, with additional typical

specifications at +115°C to +125°C.

The information in this data sheet is relevant for Silicon

Revision P60.

The ADuCM330WFS/ADuCM331WFS are developed for use

in ISO 26262 applications for Automotive Safety Integrity Level

Capability A (ASIL A). The ADuCM330WFS/ADuCM331WFS

are low electromagnetic emissions and high electromagnetic

immunity devices.

Multifunction pin names may be referenced by their relevant

function only.