Microchip ATmega3209-AFR, 8bit AVR Microcontroller, ATmega, 20MHz, 32 kB Flash, 48-Pin TQFP

The ATmega3209 is a microcontroller featuring the 8-bit AVR® processor with hardware multiplier - running at up to 20MHz and with up to 32Kb Flash, 4Kb SRAM and 256 b of EEPROM in 48-pin packages. The series uses the latest Core Independent Peripherals with low power features. Including Event System, intelligent analog and advanced peripherals.

8-bit high-performance AVR RISC CPU
Hardware multiplier
Three sleep modes:
Idle
Standby
Power Down
Event System
Watchdog Timer (WDT)
Power-On Reset (POR)
Brown-Out Detection (BOD)
Single pin programming and debugging interface (UPDI)
Analog Features
16 Channel 10-bit ADC with Voltage Reference
Analog Comparator (AC)
Timing/Waveform/Measurement Control
Configurable Custom Logic (CCL)
5x 16-bit Timer (TCA / TCB)
Cyclical Redundancy Check (CRC/SCAN)
Communication
SPI / I2C / USART