PIC32MX250F128BT-50I/ML

Microcontroller - MIPS32 M4K - 32-Bit Single-Core - 50MHz - 19 I/O - 128KB (128K x 8) FLASH - 32K x 8 RAM - 2.3 to 3.6V - 28-QFN (6x6) - T&R.