ADUC7030 Datasheet, PDF (1/150 Pages) Analog Devices – Integrated Precision Battery Sensor For Automotive

Preliminary Technical Data
Integrated Precision Battery Sensor
For Automotive
ADuC7030/ADuC7033
FEATURES
High precision ADCs
Dual channel, simultaneous sampling, 16-bit Σ∆ ADCs
Programmable ADC throughput from 1 Hz to 8 kHz
On-chip 5ppm/°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 12V 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
32 kbytes Flash/EE memory, 4 kbytes SRAM (ADuC7030)
96 kbytes Flash/EE memory, 6 kbytes SRAM (ADuC7033)
10 kcycles Flash/EE endurance, 20 years Flash/EE retention
In-circuit download via JTAG and LIN
On-chip peripherals
LIN 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, 3 X 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
Packages and temperature range
48 Pin LFCSP 7X7 mm or 48 Pin LQFP 7X7 mm body
package
Fully specified for −40°C to +115°C operation
APPLICATIONS
Battery sensing/management for automotive systems
FUNCTIONAL BLOCK DIAGRAM
TCK TDI TDO NTRST TMS
IIN+
IIN–
VBAT
PRECISION ANALOG ACQUISITION
PGA
16-BIT
Σ-∆ ADC
ADuC7030/ADuC7033
2.6V LDO
PSM
POR
MEMORY
32KB FLASH
4KB RAM
RESET
VTEMP
GND_SW
VREF
RESULT
DIGITAL
ACCUMULATOR COMPARATOR
MUX BUF
16-BIT
Σ-∆ ADC
TEMPERATURE PRECISION
SENSOR
REFERENCE
ARM7TDMI
MCU
20MHz
PRECISION
OSC
LOW POWER
OSC
ON-CHIP PLL
XTAL1
XTAL2
3 × TIMERS
WDT
W/U TIMER
GPIO PORT
UART PORT
SPI PORT
LIN
WU
STI
LIN/BSD
Figure 1.
Rev. PrE
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