Functional Safety Ready AVR® DA MCUs

Microchip’s AVR DA family of MCUs enable CPU speeds of 24 MHz over the full supply voltage range, memory density of up to 128 KB Flash, 16 KB SRAM, and 512 bytes of EEPROM, 12-bit differential analog-to-digital converter (ADC), 10-bit digital-to-analog converter (DAC), analog comparators and zero-cross detectors (ZCDs). The PTC enables capacitive touch interface designs supporting buttons, sliders, wheels, touchpads, and smaller touch screens, as well as gesture controls used in a wide range of consumer and industrial products and vehicles. The AVR DA family of MCUs supports up to 46 self-capacitance and 529 mutual capacitive touch channels and features the latest generation PTC with driven shield+ and boost mode technologies providing enhanced noise immunity, water tolerance, touch sensitivity, and response time.

Microchip’s functional safety ready designation is applied to devices that incorporate the latest safety features and are supported by safety manuals, failure modes, effects, and diagnostic analysis (FMEDA) reports, and in some cases, diagnostic software reducing the time and cost of certifying safety end applications. The AVR DA MCU family includes several integrated safety functions to ensure robust operation features ensuring a sufficient supply voltage such as power-on reset, brown-out detector, and voltage-level monitor. The cyclic redundancy check (CRC) scan ensures the application code in the Flash memory is valid. By ensuring code integrity, unintended and potentially unsafe behavior of the application can be avoided. The AVR DA MCUs offer several options for software and hardware support. Software support includes MPLAB® X, MPLAB Xpress, and Atmel studio, code configuration tools including MCC and START, and compilers including GCC, XC8, and the IAR embedded workbench. A functional safety certified version of the XC8 compiler is available via Microchip’s functional safety ready program. Hardware support is included in debuggers/programmers including MPLAB PICkit™ 4, MPLAB SNAP, Atmel ICE, and the AVR128DA48 curiosity nano evaluation kit. The AVR DA MCUs are ideal for functional safety or any other safe, real-time control, and interface applications.