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
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