INTRODUCTION

The DMC73C168 is an 8-Bit microcontroller that contains Prescaler, PLL Frequency Synthesizer and 2 channel A/D converter for Digital Tuning System.

The device is provided with abundant I/O ports and 2 channel serial interface ports (SI/O) controlled by powerful instruction. The package is 80-pin QFP and high performance CPU and internal peripheral allow flexible and easy system design in car-stereo, radio tuner and Hi-Fi audio system.

Key Features

■ CMOS Technology

■ Memory Configuration

● 256 Byte On-Chip RAM Register file plus 128 Byte Peripheral Free RAM

● Memory-Mapped Ports for Easy Addressing

● 16K-Byte On-Chip ROM

■ On-Chip PLL Frequency Synthesizer with Dual Modules Prescaler

● Independant Frequency input ports : Max 150MHz at FM, 40MHz at AM

● Two Types of Frequency Dividing Method : Pulse Swallow and Direct

● 8 Kinds of reference Frequencies : 1, 5, 6.25, 9, 10, 12.5, 25 and 50KHz

■ 2 Channel SIO port

■ 2 Channel On-Chip Timer

● 16-Bit with 5-Bit Prescaler and 16-Bit capture latch, timer outputs

● Internal interrupt with Automatic timer Reload

■ On-Chip A/D Converter

● 2-channels with 8 bit resolution

● Ratiometric Conversion

● 144 Machine-Cycles Conversion time (64us)

■ On-Chip IF Counter

● 17-Bit, Gate Time : Program can select from 1ms to 15ms

● maximum Input Frequency : FM IF = 20MHz, AM IF = 5MHz

■ Easy Interrupt Handling

● External Interrupts with Schmitt-Trigger Input

● Software Calls through Interrupt Vectors

● Software Monitoring of Interrupt Status

● Precise Interrupt Timing through Capture Latch

■ Selectable Beep clock : 417Hz, 1KHz, 1.25KHz, 2.5KHz

■ 64 I/O Pins

● 64 Bidirectional Pins

■ Wide Operating Range

● Voltage(VDD) : 5V ¡ 10 ¾

● Clock : 4.5MHz

● Temperature : -40 deg to 85 deg

● One Machine Execution Time : 0.44us (with 4.5MHz Crystal Oscillator)

■ Low operating Current

● Halt Mode for Power Savings (Typical : 1uA at OSC stop)

● Warm-up mode for avoid unstable osc operation at the wake time from Halt mode.

The warm-up time can be adjustable by S/W.

■ Package

● 80 QFP (Quad Flat Package)

■ Development Support

● Evaluation Module : EVM73C00A & ADP73C168

● Assembler/Linker Cross Support for Popular Hosts