The Z86L79/L80 family of IR (InfraRed) Controllers are ROM-based members of the Z8 MCU single-chip microcontroller family with 237 bytes of general-purpose RAM. The only differentiating factor between these two versions is the availability of ROM. Zilog's CMOS microcontrollers offer fast execution, efficient use of memory, sophisticated interrupts, input/output bit manipulation capabilities, automated pulse generation/reception, and easy hardware/software system expansion along with cost-effective and low power consumption.