LPC43S37JBD144 Datasheet, NXP

* Cortex-M4 Processor core
* ARM Cortex-M4 processor (version r0p1), running at frequencies of up to 204 MHz.
* Built-in Memory Protection Unit (MPU) supporti.

which include an ARM Cortex-M0 coprocessor, up to 1 MB of flash and 136 kB of on-chip SRAM, 16 kB of EEPROM memory, secu.

The LPC43S5x/S3x are ARM Cortex-M4 based microcontrollers for embedded applications which include an ARM Cortex-M0 coprocessor, up to 1 MB of flash and 136 kB of on-chip SRAM, 16 kB of EEPROM memory, security features with AES engine, a quad SPI Flas.