AVR® LA Microcontrollers (MCUs)

The EVSYS allows peripherals to communicate directly with each other without involving the CPU or bus resources. This means that different triggers at the peripheral level can result in an event, such as a timer’s interrupts triggering an action in another peripheral. The EVSYS has three independent channels for direct peripheral-to-peripheral signaling. This deterministic signaling method is an excellent fit for real-time applications. The events are handled at the peripheral level even if the CPU is occupied handling interrupts or in sleep mode.

You can use the built-in features that support safety-critical applications to add robustness and reliability to your design. These include the Windowed Watchdog Timer (WWDT) for system supervision, the Cyclic Redundancy Check (CRC) for scanning Flash memory, and the Event System for fault detection. Other features include a Voltage Level Monitor (VLM), a Brown-Out Reset (BOR) and Power-On Reset (POR) for monitoring the supply voltage. 

The Configurable Custom Logic (CCL) peripheral is a programmable logic peripheral that can be connected to the device pins, events or other internal peripherals. Each Lookup Table (LUT) consists of three inputs: a truth table, an optional synchronizer and a filter and edge detector. An LUT can generate an output to be routed internally or to an I/O pin. This eliminates the need for external logic and reduces BoM cost.

The on-board 12-bit, 300 ksps differential Analog-to-Digital Converter (ADC) features selectable internal voltage references with minimal temperature drift, and  Programmable Gain Amplifier (PGA) supporting up to 16× gain making it possible to retrieve small signals in noisy environments. Using the Event System, the on-board Analog Comparators (ACs) can be connected to trigger autonomous operation in other peripherals, which is ideal for real-time control and closed-loop operations.