The CR64/U3.6864MHZ is a Generic part that can be used for embedded MCU applications and is a 64-pin low power, 8-bit 8051 microcontroller. It has 3.6864 MHz speed clock, an 8-bit ALU and 64kB flash memory. It features an array of peripherals, including USART/I2C/SPI, 16 Advanced Interrupt Sources, Two 8-bit Timer/Counters, Two 10-bit A/D Converters, and One 12-bit DAC. It also has integrated Watch Dog Timers and Multiple Power Down Modes for low system power usage. The CR64/U3.6864MHZ has an Operating Temperature Range ranging from -40¬8C to 85¬8C, and supports 5V and 3.3V voltage levels.