Overview

Features and Benefits

HIGH PRECISION ADCS
  • Dual channel, simultaneous sampling, 16-bit, Σ-Δ ADCs
  • Programmable ADC throughput from 1 Hz to 8 kHz
  • On-chip 5 ppm/°C voltage reference
  • Current channel
    Fully differential, buffered input
    Programmable gain from 1 to 512
    ADC input range: −200 mV to +300 mV
    Digital comparators, with current accumulator feature
  • Voltage channel
    Buffered, on-chip attenuator for 12 V battery inputs
  • Temperature channel
    External and on-chip temperature sensor options
MICROCONTROLLER
  • ARM7TDMI® core, 16-/32-bit RISC architecture
  • 20.48 MHz PLL with programmable divider
  • PLL input source
    On-chip precision oscillator
    On-chip low power oscillator
    External (32.768 kHz) watch crystal
  • JTAG port supports code download and debug
MEMORY
  • 96-kB Flash/EE memory, 6-kB SRAM
  • 10,000-cycle Flash/EE endurance, 20-year Flash/EE retention
  • In-circuit download via JTAG and LIN
ON-CHIP PERIPHERALS
  • SAEJ2602/LIN 1.3/LIN 2.0-compatible (slave) support via UART with hardware synchronization
  • Flexible wake-up I/O pin, master/slave SPI® serial I/O
  • 9-pin GPIO port, 3× general-purpose timers
  • Wake-up and watchdog timers
  • Power supply monitor, on-chip power-on-reset
POWER
  • Operates directly from 12 V battery supply
  • Current consumption
    Normal mode 10 mA at 10 MHz
    Low power monitor mode
PACKAGE AND TEMPERATURE RANGE
  • 48-lead, 7 mm × 7 mm LFCSP
  • Fully specified for −40°C to +115°C operation

Product Details

The ADuC7036 is a complete system solution for battery monitoring in 12 V automotive applications. These devices 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 the 12 V battery. An on-chip, low dropout regulator generates the supply voltage for three integrated, 16-bit, Σ-Δ ADCs. The ADCs precisely measure battery current, voltage, and temperature to characterize the state of health and charge of the car battery.

TA Flash/EE memory-based ARM7™ microcontroller (MCU) is also integrated on-chip. It is used to both preprocess the acquired battery variables and to manage communications from the ADuC7036 to the main electronic control unit (ECU) via a local interconnect network (LIN) interface that is integrated onchip.

Both the MCU and the ADC subsystem can be individually configured to operate in normal or flexible power saving modes of operation.

Applications

  • Battery sensing/management for automotive systems
  • Product Lifecycle icon-recommended Production

    At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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    Sigma-Delta ADC Tutorial

    An interactive illustration showing the behavior of an idealized sigma-delta A/D converter.

    Design Resources

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    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.