ADUC7036BCPZ Datasheet, PDF (1/132 Pages) Analog Devices – Integrated Precision Battery Sensor for Automotive

Integrated Precision Battery Sensor
for Automotive
ADuC7036
FEATURES
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 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 and 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
APPLICATIONS
Battery sensing/management for automotive systems
FUNCTIONAL BLOCK DIAGRAM
IIN+
IIN–
VBAT
VTEMP
VREF
GND_SW
PRECISION ANALOG ACQUISITION
BUF PGA
16-BIT
Σ-∆ ADC
RESULT
DIGITAL
ACCUMULATOR COMPARATOR
MUX BUF
16-BIT
Σ-∆ ADC
TEMPERATURE
SENSOR
PRECISION
REFERENCE
ADuC7036
2.6V LDO
PSM
POR
MEMORY
98kB FLASH
6kB RAM
ARM7TDMI
MCU
20MHz
PRECISION
OSC
LOW POWER
OSC
ON-CHIP PLL
3× TIMERS
WDT
WU TIMER
GPIO PORT
UART PORT
SPI PORT
LIN
RESET
XTAL1
XTAL2
WU
STI
LIN/BSD
Figure 1.
Rev. C
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