The Z86E7X family of IR (Infrared) CCPTM (Consumer Controller Processor) are OTP-based members of the Z8 single-chip microcontroller family with 256 or 768 bytes of general-purpose RAM. The only differentiating factor between the E72/73 versions is the availability of RAM and ROM. This EPROM Microcontroller family of OTP IR controllers also offer the use of external memory which enables this Z8 microcontroller to be used where code flexibility is required. 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.