ADUC7039

Integrated, Precision Battery Sensor for Automotive Systems ADuC7039 FEATURES High precision ADC Dual channel, simultaneous sampling, 16-bit, Σ-Δ ADCs Programmable ADC throughput from 10 Hz to 1 kHz On-chip 5 ppm/ºC voltage reference Current channel Fully differential, buffered input Programmable gain ADC input range: −200 mV to +300 mV Digital comparator with current accumulator feature Voltage channel Buffered, on-chip attenuator for 12 V battery input Temperature channel External and on-chip temperature sensor options Microcontroller ARM7TDMI-S core, 16-/32-bit RISC architecture 20.48 MHz PLL On-chip precision oscillator JTAG port supports code download and debug Memory 64 kB Flash/EE memory options, 4-kB SRAM 10,000-cycle Flash/EE endurance, 20-year Flash/EE retention In-circuit download via JTAG and LIN On-chip peripherals LIN 2.1-compatible slave SPI GPIO port 1 × general-purpose timer Wake-up and watchdog timers On-chip power-on-reset Power Operates directly from 12 V battery supply Current consumption 7.5 mA (10 MHz) Low power monitor mode Package and temperature range 32-pin, 6 mm × 6 mm LFCSP Fully specified for −40°C to +115°C operation APPLICATIONS Battery sensing/management for automotive systems IIN+ IIN– VBAT VTEMP GND_SW FUNCTIONAL BLOCK DIAGRAM RTCK TCK TDI TDO NTRST TMS PRECISION ANALOG ACQUISITION BUF PGA 16-BIT Σ-Δ ADC ADuC7039 LDO POR MEMORY 64KB FLASH 4KB RAM RESET RESULT DIGITAL ACCUMULATOR COMPARATOR MUX BUF 16-BIT Σ-Δ ADC TEMPERATURE...