NOTE: ATSAMD21E15A is not recommended for new designs, please use ATSAMD21E15B. A low-power, high-performance Microchip's ARM® Cortex®-M0+ based flash microcontroller, the ATSAMD21E15 is ideal for a wide range of home automation, consumer, metering, and industrial applications. It features: It features: 32KB of Flash and 4KB of SRAM Up to 48MHz operating frequency Five serial communication (SERCOM) modules configurable as UART/USART, SPI or I2C, four 16-bit timer/counters, two 24-bit timer/counters, 32-bit Real-Time Clock and calendar, one 14-channel 12-bit ADC, one 10-bit DAC and four analog comparators 1.62V to 3.63V power supply 32-pin package with up to 26 GPIO pins Supported by MPLAB X IDE and MPLAB Harmony. Functional Safety This device supports the ISO 26262 (ASIL B), IEC 61508 (SIL 2) and IEC 60730 (Class B) functional safety standards. · The Functional Safety Manual, FMEDA and information on the Diagnostic Software are available under NDA through the request form on the 32-bit Microcontrollers Functional Safety web page. · To request any information about the SIL 2 STL, please fill out and submit the request form on Industrial Safety Self-Test Library web page. · Learn more about 32-bit MCUs with Functional Safety capabilities including device hardware and certified software libraries.