This is preliminary information on a new product in development or undergoing evaluation. Details are subject to change without notice. ST72104G, ST72215G, ST72216G, ST72254G are 8-bit MCUs with single voltage flash memory, ADC, 16-bit timers, SPI, and I2C interfaces. The product features include program memory, clock, reset and supply management, interrupt management, I/O ports, timers, communication interfaces, and an analog peripheral.