ADUC7036DCPZ Analog Devices 32bit MCU

ADUC7036DCPZ Overview

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

Features

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 channelFully differential, buffered inputProgrammable gain from 1 to 512ADC input range: −200 mV to +300 mVDigital comparators, with current accumulator feature
Voltage channelBuffered, on-chip attenuator for 12 V battery inputs
Temperature channelExternal and on-chip temperature sensor options

MICROCONTROLLER

ARM7TDMI® core, 16-/32-bit RISC architecture
20.48 MHz PLL with programmable divider
PLL input sourceOn-chip precision oscillatorOn-chip low power oscillatorExternal (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