Teensy 3.5 (Without Pins)

120 MHz ARM Cortex-M4 with Floating Point Unit 512K Flash, 192K RAM, 4K EEPROM Microcontroller Chip MK64FX512VMD12 1 CAN Bus Port 16 General Purpose DMA Channels 5 Volt Tolerance On All Digital I/O Pins 62 I/O Pins (42 breadboard friendly) 25 Analog Inputs to 2 ADCs with 13 bits resolution 2 Analog Outputs (DACs) with 12 bit resolution 20 PWM Outputs USB Full Speed (12 Mbit/sec) Port Ethernet mac, capable of full 100 Mbit/sec speed Native (4 bit SDIO) micro SD card port I2S Audio Port, 4 Channel Digital Audio Input & Output 14 Hardware Timers Cryptographic Acceleration Unit Random Number Generator CRC Computation Unit 6 Serial Ports (2 with FIFO & Fast Baud Rates) 3 SPI Ports (1 with FIFO) 3 I2C Ports Real Time Clock