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