The AT89C51RC2T-RLTUM from Microchip is an 8-bit microcontroller with low power CMOS technology. It has a 4-KB Flash with 16 bytes data EEPROM, 128 bytes RAM, 32 Interrupt Sources, and 3 levels of power saving modes. The on-chip oscillator and timer circuitry allow for its use as an independent timing system. It has an 8-bit CPU with four 16-bit timers/counters, an 8-bit, 255-byte stack pointer, and a multi-source 8-level interrupt structure. It also features three serial ports including a universal asynchronous receiver and transmitter, and a serial peripheral interface. It is functionally compatible with the industry standard 8051 microcontroller. The AT89C51RC2T-RLTUM is well suited for applications that require low power consumption and high performance, such as automotive, instrumentation and medical applications.