Nuvoton NUC501BDN

The Nuvoton NUC501BDN is a CPU - ARM7TDMI, up to 108MHz - Boot ROM - Built-in 32KB high speed SRAM - Extensible XIP @ external SpiROM/SpiFlash S/W - Boot loader - ISP for SpiFlash & security OTP key via USB Peripheral - Data write-back & USB downloading to SpiFlash - Secured code/data storage @ SpiROM/SpiFlash - Support LCD panel via SPI interface - AIC Advanced Interrupt Controller with 8-level interrupt scheme - Audio Process Unit (APU), Low-Dropout (LDO) regulator - 8-Level Low Voltage Detector (LVD) - 2 32-Bit Timer with 8-Bit pre-scaler - 1 32-Bit Watchdog Timer, - 16-bit Sigma-Delta DAC for audio output - 10-bit x 8-ch ADC for sensors, MIC, LVD, & LVR - 24-bit watch dog timer - 4 independent PWM for driving motors - 4 capture & compare PWM inputs - Power saving modes: idle, power down with RTC active, power down. - RTC with independent power & dedicated 32KHz clock input - 26 / 37 GPIO @ LQFP48 / LQFP64 - 8 LED pins with 16mA direct sink capability - SPI x 3 (master x 2 & master/slave x 1) - 2 UART ports @ 115.2Kbps / 1Mbps - I2C @ 400 KHz - USB2.0 FS Device Technology & Package - 0.18um CMOS - 3.3-volt single supply - LQFP48 / LQFP64.