- May 05, 2020
May 6, 2020 – Microchip Technology announced its AVR DA family of microcontrollers (MCUs) – its first Functional Safety Ready AVR MCU family with Peripheral Touch Controller (PTC).
Microchip’s Functional Safety Ready designation is applied to devices that incorporate 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.
Microchip’s AVR DA family of MCUs enables 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 ADC, 10-bit DAC, analog comparators and zero cross detectors. The PTC enables capacitive touch interface designs supporting buttons, sliders, wheels, touchpads, 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 PTC with Driven Shield+ and boost mode technologies providing noise immunity, water tolerance, touch sensitivity and response time.
In addition, the AVR DA family of MCUs brings additional value to embedded real-time control systems. The integrated event system enables inter-peripheral communication without involving the CPU.
The configurable custom logic peripheral enables the setup of logical functions internally, eliminating the need for external components, reducing board space and bill of material costs. With the new advanced analog features like the 12-bit differential ADC, the AVR DA family of MCUs can measure small amplitude signals in noisy environments, making them suited for sensor node applications in harsh environments.