DESCRIPTION
The µPD178076, 178078, 178096, and 178098 are 8-bit single-chip CMOS microcontrollers containing hardware for digital tuning systems.
These microcontrollers employ a 78K/0 series architecture CPU and allow easy access to internal memories at high speed and easy control of peripheral hardware units. The high-speed 78K/0 series instructions are ideal for system control.
As peripheral hardware, a prescaler, PLL frequency synthesizer, and frequency counter for digital tuning systems are provided, as well as many I/O ports, timers, A/D converter, serial interface, and a power-ON clear circuit. In addition, the µPD178076 and 178078 have an asynchronous serial interface (UART) mode, and the µPD178096 and 178098 have an IEBusTM controller.
Moreover, a flash memory model, the µPD178F098, that operates in the same supply voltage range as the mask ROM models, and various development tools are also under development.

FEATURES
• High-capacity ROM and RAM
• Instruction cycle:
    0.32 µs (with crystal resonator of fX = 6.3 MHz)
• Many internal hardware units
    General-purpose I/O ports, A/D converter, serial
    interface (UART mode: µPD178076 and 178078
    only), IEBus controller (µPD178096 and 178098
    only), timers, frequency counter, power-ON clear
    circuit
• Hardware for PLL frequency synthesizer
    dual modulus prescaler, programmable divider,
    phase comparator, charge pump
• Vectored interrupt sources
• µPD178076, 178078: 22
• µPD178096, 178098: 21
• Supply voltage
    :VDD = 4.5 to 5.5 V (during PLL and CPU operations)
    :VDD = 3.5 to 5.5 V (during CPU operation)

APPLICATION FIELD
    Car stereos