Nuvoton NUC502ADN User Manual

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Nuvoton NUC502ADN User Manual Manual pdf 6 page image

NUC502Apr 30, 2015 Page 6 of 266 Rev 1.11 General DescriptionThe NUC502 is an ARM7TDMI-based MCU, specifically designed to offer low-cost andhigh performance for various applications, like interactive toys, edutainment robots, andhome appliances. It integrates the 32-bit RISC CPU with 64KB high-speed SRAM, cryptoengine with OTP key, boot ROM, LDO regulator, ADC, DAC, I2C, SPI, USB2.0 FS Device, &GPIO into a cost-affordable while feature-rich micro-controller.Owing to the simplicity of the NUC502 architecture that boots SpiMemory into the high-speed SRAM for program execution, the total system BOM is reduced to its minimum. Unlikeusual ARM-based MCU products, the NUC502 operates without the use of SDRAM, which isusually the source of complexity, higher power consumption, and cost.The ARM7TDMI runs up to 81MHz on the high-speed SRAM to offer enough horsepowerfor many MIPS-hungry tasks, while the remaining MIPS is still able to serve the need ofapplication program. For those applications, like cartridge games, that require large codestorage and variation of game play scenarios, the patented Extensible XIP Addressing onSpiMemory gives the flexibility whenever program execution speed is not a critical concern.To protect the code against illegal pirating, the NUC502 provides a crypto engine thatworks with internal OTP2 key to encrypt the data stored at external SpiMemory when thedesign-in is finished. Without the knowledge of the OTP key, others can’t decrypt the dataeven by means of ICE debugging.The NUC502 is designed with special care to minimize the power consumption whileallowing for the flexibility to reach for high performance. It includes the clock gating,variable frequency control for individual IP’s, and bus control to reduce signal toggle.Besides, the NUC502 can be further operated under different power-saving modes: idle,power down with RTC active, and power down mode.With so many practical peripherals integrated around the high-performance ARM7 CPU,the NUC502 is suitable for such applications as Interactive toys, edutainment robots, andhome appliances. Whenever MIPS-hungry task meets cost-effective demand, you’ll find theNUC502 truly useful to satisfy the requirement.