LPC11U1x 32-bit ARM Cortex-M0 microcontroller; up.
NXP
LPC11U12 - 32-bit ARM Cortex-M0 microcontroller
LPC11U1x 32-bit ARM Cortex-M0 microcontroller; up to 32 kB flash; 6 kB SRAM; USB device; USART Rev. 2.2 — 11 March 2014 Product data sheet 1. Gene.