Arm Cortex-M33 microcontroller family targets embedded applications requiring secure processing and broad peripheral integration. The devices run at up to 150 MHz and include up to 512 KB of on-chip flash with up to 256 KB of SRAM. Integrated peripherals include high-speed and full-speed USB host/device interfaces, SD/MMC/SDIO, nine Flexcomm serial interfaces, timers, PWM, programmable logic, a 16-bit 1.0 Msamples/s ADC, comparator, and temperature sensor. Security features include secure boot support, AES, SHA, RSA support through the CASPER crypto coprocessor, PUF, TRNG, UUID, and debug authentication. The family operates across a 1.8 V to 3.6 V main I/O supply range and a -40 °C to +105 °C ambient temperature range.
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| Core | Arm Cortex-M33 |
| Maximum CPU Frequency | 150MHz |
| On-Chip Flash Memory | Up to 512KB |
| On-Chip SRAM | Up to 256KB |
| Main I/O Supply Voltage | 1.8 to 3.6V |
| Operating Ambient Temperature | -40 to +105°C |
| USB Interfaces | High-speed and full-speed host/device |
| Flexcomm Interfaces | 9 configurable USART/SPI/high-speed SPI/I2C/I2S peripherals |
| GPIO Pins | Up to 64 |
| ADC Resolution | 16bit |
| ADC Sample Rate | 1.0Msamples/s |
| ADC Channels | 5 differential pairs or 10 single-ended channels |
| General-Purpose Timers | Five 32-bit timers/counters |
| SCTimer/PWM | 1 with 8 inputs and 10 outputs |
| SDIO Clock Frequency | 50MHz |
| SPI Master Bit Rate | 50Mbit/s |
| Flash Endurance | 100000 at -40 °C to +85 °C, 10000 at -40 °C to +105 °Ccycles |
| Flash Retention | 25 below 1k erase/program cycles, 15 at or above 1k cyclesyears |
| Security Features | Secure boot, AES-256, SHA2, PUF, TRNG, UUID, PRINCE, debug authentication |
| Package Options | HLQFP100, VFBGA98, HTQFP64 |
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These are design resources that include the NXP LPC552x
Technical guide for flash memory operations on NXP LPC5500 MCUs, covering ROM APIs, Protected Flash Regions (PFR), and ECC-related HardFault prevention.
This application note explains how to use the Debug Authentication Protocol (DAP) on LPC55Sxx MCUs to securely authenticate debuggers using RSA-based cryptographic keys.
