Integrated, Precision Battery Sensor for Automotive Systems Data Sheet ADuCM330/ADuCM331 FEATURES Memory 96 kB (ADuCM330)/128 kB (ADuCM331) Flash/EE memory, ECC High precision analog-to-digital converters (ADCs) 6 kB SRAM, ECC Dual channel, simultaneous sampling 4 kB data Flash/EE memory, ECC I-ADC 20-bit - (minimizes range switching) 10,000 cycle Flash/EE endurance VADC/TADC 20-bit - 20 year Flash/EE retention Programmable ADC conversion rate from 1 Hz to 8 kHz In circuit download via SWD and LIN On-chip 5 ppm/C voltage reference On-chip peripherals Current channel Serial port interface (SPI) Fully differential, buffered input General-purpose input/output (GPIO) port Programmable gain (from 4 to 512) General-purpose timer ADC absolute input range: 200 mV to +300 mV Wake-up timer Digital comparator with current accumulator feature Watchdog timer Voltage channel On-chip, power-on reset Buffered, on-chip attenuator for 12 V battery input Power Temperature channel Operates directly from 12 V battery supply External and on-chip temperature sensor options Power consumption, 8 mA typical (16 MHz) Microcontroller Low power monitor mode ARM Cortex-M3 32-bit processor Package and temperature range 16.384 MHz precision oscillator with 1% accuracy 32-lead, 6 mm 6 mm LFCSP Serial wire download (SWD) port supporting code Fully specified for 40C to +115C operation additional download and debug specifications for 115C to 125C Automotive qualified integrated local interconnect network Qualified for automotive applications (LIN) transceiver LIN 2.2-compatible slave, 100 kb fast download option APPLICATIONS SAE J-2602-compatible slave Battery sensing/management for automotive and light Low electromagnetic emissions (EME) mobility vehicles High electromagnetic immunity (EMI) Lead acid battery measurement for power supplies in industrial and medical domains FUNCTIONAL BLOCK DIAGRAM SWDIO SWCLK PRECISION ANALOG ACQUISITION ADuCM330/ADuCM331 IIN+ 20-BIT PGA BUF ADC MEMORY IIN 96kB (ADuCM330)/ RESET LDO 128kB (ADuCM331) VBAT POR FLASH, 6kB SRAM, 4kB DATA RESULT DIGITAL ACCUMULATOR COMPARATOR 16MHz CORTEX-M3 PREC OSC 1% PROCESSOR LPM 20-BIT MUX VTEMP BUF ADC GND SW 1 GP TIMER GPIO PORT TEMPERATURE PRECISION WD TIMER SPI PORT LIN SENSOR REFERENCE W/U TIMER LIN Figure 1. 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Technical Support www.analog.com VDD 33VDD AVDD18 DVDD18 AGND DGND VSS IO VSS GPIO5/LC TX/LIN TX GPIO4/IRQ1/LC RX/ ECLKIN/LIN RX GPIO3/IRQ0/MOSI/ LC TX/LIN TX GPIO2/MISO GPIO1/SCLK/LIN TX GPIO0/CS/LIN RX 11153-004ADuCM330/ADuCM331 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Applications Information .............................................................. 14 Applications ....................................................................................... 1 Design Guidelines ...................................................................... 14 Functional Block Diagram .............................................................. 1 Power and Ground Recommendations ................................... 14 Revision History ............................................................................... 2 Exposed Pad Thermal Recommendations .............................. 14 General Description ......................................................................... 3 General Recommendations....................................................... 14 Specif icat ions ..................................................................................... 4 Recommended Schematic ............................................................. 15 Absolute Maximum Ratings .......................................................... 10 Outline Dimensions ....................................................................... 16 ESD Caution ................................................................................ 10 Ordering Guide .......................................................................... 16 Pin Configuration and Function Descriptions ........................... 11 Automotive Products ................................................................. 16 Terminology .................................................................................... 13 REVISION HISTORY 10/15Rev. B to Rev. C Changes to Table 2 .......................................................................... 10 7/15Revision B: Initial Version Rev. C Page 2 of 16