ATXMEGA16E5-M4U

The ATXMEGA16E5-M4U is a 8-bit high-performance low-power AVR® XMEGA® Microcontroller combines 16kB ISP flash memory (plus 4kB boot code section) with read-while-write capabilities, 512B EEPROM, 2kB SRAM, eight-channel event system, a programmable multi-level interrupt controller, 26 general purpose I/O lines, one 16-bit real time counter, three flexible 16-bit timer/counters with compare modes and PWM, two USARTs (with SPI Master mode), one Two-Wire Interfaces (TWI) with SMBus Level 1 support, one Serial Peripheral Interface (SPI), one 16-channel/12-bit 300kSPS A/D converter with optional differential input with programmable gain, one two-channel 12-bit 1MSPS D/A converter, two analogue comparators with window mode, a programmable watchdog timer with separate internal oscillator, accurate internal oscillators with PLL and prescaler and programmable brown-out detection.