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.
Non-volatile program and data memories
Peripheral features - Four-channel enhanced DMA controller with 8/16-bit address match
Three 16-bit timers/counters - One timer/counter with four output compare or input capture channels
CRC-16 (CRC-CCITT) and CRC-32 (IEEE 802.3) generator
XMEGA Custom Logic (XCL) module with timer, counter and logic functions
Two USARTs with full-duplex and single wire half-duplex configuration - Master SPI mode
One Two-Wire interface with dual address match (I²C and SMBus compatible)
One serial peripheral interface (SPI)
16-bit Real time counter with separate oscillator and digital correction
One sixteen-channel, 12-bit, 300ksps analogue to digital converter with offset and gain correction
One two-channel, 12-bit, 1Msps digital to analogue converter
Two analogue comparators with window compare function and current sources
External interrupts on all general purpose I/O pins
Programmable watchdog timer with separate on-chip ultra low power oscillator
QTouch® library support - Capacitive touch buttons, sliders and wheels
Power-on reset (POR) and programmable brown-out detection
