Nxp single chip arm7 microcontrollers nxp lpc2141fbd64 151 the lpc2141fbd64 microcontroller is based on a 16 bit32 bit arm7tdmi s cpu with real time emulation and embedded trace support that combines the microcontroller with embedded high speed flash memory a 128 bit wide memory interface and a unique accelerator architecture enable 32 bit code execution at the maximum clock rate for critical code size applications the alternative 16 bit thumb mode reduces code by more than 30 with min