The MAXQ7665B smart system-on-a-chip (SoC) is a data acquisition system based on a microcontroller (μC).

As a member of the MAXQ® family of 16-bit, reduced instruction set computing (RISC) μCs, the MAXQ7665B is ideal for low-cost, low power, embedded applications such as automotive, industrial controls, and building automation. The flexible, modular architecture design used in this μC allows development of targeted products for specific applications with minimal effort.

The MAXQ7665B incorporates a high-performance 16-bit RISC core, a 12-bit 500ksps SAR ADC with a programmable gain amplifier (PGA), and a full CAN 2.0B controller supporting transfer rates up to 1Mbps. The device includes a 12-bit DAC with a buffered voltage output and on-chip oscillator circuitry to operate from an external high frequency (8MHz) crystal.

There is also a built-in internal RC oscillator as an alternative to using an external crystal. The MAXQ7665B contains an internal temperature sensor to measure die temperature and a remote temperature-sensor driver. The analog functions and digital I/O are powered from a 5V supply, while the internal digital core is powered from 3.3V that can be supplied by an onchip linear regulator. The device also includes a dual power-supply supervisor with reset, and a JTAG interface for in-system programming and debugging. The 16-bit RISC μC includes up to 64kB (32kb x 16) of flash memory and 512 bytes (256 x16) of RAM.

The MAXQ7665B is available in a 48-pin TQFN package and is specified to operate from -40°C to +125°C.

An evaluation kit (MAXQ7665EVKIT) will be available soon, this is a convenient platform to evaluate the capabilities of the MAXQ7665 data-acquisition microcontroller. The kit contains all the hardware needed to interface to a PC and run demo application software. In addition to the MAXQ7665 microcontroller, the EV kit includes an I2C EEPROM for nonvolatile storage. The EV kit also includes external temperature sensors, along with the MAXQ7665 internal sensor.

Development tools for MAXQ family microcontroller are available from IAR System (IAR Embedded Work Bench) and from Rowley Asociates (CrossWorks for MAXQ).