LPC11U3x 32-bit ARM Cortex-M0 microcontroller; up.
NXP
LPC11U37 - 32-bit ARM Cortex-M0 microcontroller
LPC11U3x 32-bit ARM Cortex-M0 microcontroller; up to 128 kB flash; up to 12 kB SRAM and 4 kB EEPROM; USB device; USART Rev. 2.4 — March 27, 2020 Pr.