The LPC55S69JBD64 is an ARM Cortex-M33 based microcontroller for embedded applications. These devices include ARM Cortex-M33 coprocessor, CASPER Crypto/FFT engine, PowerQuad hardware accelerator for DSP functions, up to 320 KB on-chip SRAM, up to 640 KB on-chip flash, PRINCE module for on-the-fly flash encryption/decryption , high-speed and full-speed USB host and device interface with crystal-less operation for full-speed, SD/MMC/SDIO interface, five general-purpose timers, one SCTimer/PWM, one RTC/alarm timer, one 24-bit multi-rate timer device (MRT), a window watchdog timer (WWDT), nine flexible serial communication peripherals (configurable as USART, SPI, high-speed SPI, I2C or I2S interface), programmable logic unit (PLU), A 16-bit 1.0 Msamples/sec ADC capable of simultaneous conversions. The ARM Cortex-M33 provides a secure foundation, providing isolation to protect valuable IP and data with TrustZone® technology. It simplifies the design and development of software-integrated digital signal processing (DSP) instructions for digital signal control systems. To support security requirements, the LPC55S6x also provides support for secure boot, HASH, AES, RSA, UUID, DICE, dynamic encryption and decryption, debug authentication and TBSA compliance.