uCXpresso nano11U37-BLE (Arduino Compatible, Bluetooth 4.0, NXP LPC11U37 ARM Cortex-M0/ 48MHz) NXP LPC11U37- ARM Cortex-M0 / 48MHz 128K Flash Code Size, 8K RAM Size, 4K EEPROM GPIO x 24, Flex Interrupt x 8, ADC x 6, PWM x 4, SPI x 1, I2C x1, UART x 1 (with RTS/CTS) Bluetooth Low Energy (BT 4.0), Full Bluetooth Qualified Fully iOS and Android SDK supported. (Free LPCXpresso IDE platform)