The Z86227 40-pin Low-Cost Digital Television Controller (4LDTC) introduces a new level of sophistication to single-chip architecture. The Z86227 is a member of the Z8 single-chip microcontroller family with 6 Kbytes of ROM and 236 bytes of RAM. The device is offered in a 40-pin package and is CMOS compatible. The 4LDTC offers mask programmed ROM which enables the Z8 microcontroller to be used in a high volume production application device embedded with a custom program (customer supplied program) and combines together with the Z86C27 (DTC) and Z86127 (LDTC) to provide support for high end, mid range and low end TV applications. Zilog's 4LDTC offers fast execution, efficient use of memory, sophisticated interrupts, input/output bit manipulation capabilities, and easy hardware/software system expansion along with low cost and low power consumption. The device provides an ideal performance and reliability solution for consumer and industrial television applications.