ADUC7032_15 Datasheet, PDF (1/128 Pages) Analog Devices – MicroConverter Integrated, Precision Battery Sensor

Preliminary Technical Data
MicroConverter® Integrated,
Precision Battery Sensor
ADuC7032
FEATURES
High Precision ADCs
Dual Channel, Simultaneous Sampling, 16-Bit Σ−∆ ADCs
Third Independent ADC for Temperature Sensing
Programmable ADC throughput from 1Hz to 8KHz
On-Chip 5ppm/°C Voltage Reference
Current Channel
Fully differential, Buffered Input
Programmable Gain 1 to 512
ADC Input Range -200mV to +300mV
Digital Comparators, with Current Accumulator Feature
Voltage Channel
Buffered, On-Chip attenuator for 12V battery Inputs
Temperature Channel
External and On-Chip Temperature Sensor Options
Microcontroller
ARM7TDMI Core, 16/32-bit RISC architecture
20.48MHz PLL with Programmable Divider
PLL Input Source: On-Chip Precision Oscillator
On-Chip Low-Power Oscillator
External (32.768KHz) Watch Crystal
JTAG Port supports code download and debug
Memory
96k Bytes Flash/EE Memory, 6k Bytes SRAM
10KCycles Flash Endurance, 20 Years Flash Retention
In-Circuit Download via JTAG and LIN
64 x 16bit Result FIFO for Current and Voltage ADC
On-Chip Peripherals
LIN 1.2, 1.3 and 2.0 (Slave) Compatible Support via UART
with Hardware Synchronization
Flexible Wake-up I/O Pin, Master/Slave SPI Serial I/O
9-Pin GPIO Port, 2 X General Purpose Timers
Wake-up and Watchdog Timers
Power Supply Monitor, On-Chip Power-On-Reset
Power
Operates directly from 12V Battery Supply
Current Consumption
Normal Mode 10mA at 10MHz
Low Power Monitor Mode
Package and Temperature Range
48 Pin LQFP 7X7 mm body package
Fully specified for –40°C to 105°C operation
APPLICATIONS
Battery Sensing/Management for Automotive Systems
FUNCTIONAL BLOCK DIAGRAM
IIN+
IIN-
VBAT
VTEMP
GND_SW
VREF
PRECISION ANALOG ACQUISITION
BUF PGA
16-BIT
Σ−∆ ADC
RESULT
DIGITAL
ACCUMULATOR COMPARATOR
BUF
16-BIT
Σ−∆ ADC
MUX BUF
16-BIT
Σ−∆ ADC
TEMP
SENSOR
PRECISION
REFERENCE
2.5V LDO
PSM
POR
MEMORY
96KB FLASH
6KB RAM
128B ADC FIFO
RESET
ARM7TDMI
MCU
20MHz
PRECISION
OSC
LOW POWER
OSC
ON-CHIP PLL
XTAL1
XTAL2
2xTIMERS
WDT
GPIO PORT
UART PORT
WU
W/U TIMER
SPI PORT
LIN
LIN
Figure 1: ADuC7032 Functional Block Diagram
Rev. PrD
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Preliminary Specifications subject to change without notice. No license is granted by
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