PJRC Teensy 4.1 ARM Cortex-M7 Processor at 600MHz with a NXP iMXRT1062 (Without pins)

ARM Cortex-M7 IMXRT1062 processor at 600 MHz, 1024K RAM (512K is tightly coupled) 8192K Flash (64K reserved for recovery & EEPROM emulation) 10/100MBIT Ethernet and Micro SD Socket 35 PWM Pins, 18 Analog Inputs, 8 Serial Ports, SPI, I2C, I2S,CAN Bus, IR modulator I2S (for high quality audio interface) 2.4 by 0.7 inch form factor, same as Teensy 3.6