MDT1051

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P.1

2005/6

Ver. 1.9

1. General Description

This ROM-Based 8-bit micro-controller uses a fully

static CMOS technology process to achieve higher

speed

and

smaller

size

with

the

low

power

consump-tion and high noise immunity. On chip

memory incl-udes 1K words of ROM, and 68 bytes of

static RAM.

2. Features

The followings are some of the features on the

hardware and software :

u

Fully CMOS static design

u

8-bit data bus

u

On chip ROM size : 1.0 K words

u

Internal RAM size : 84 bytes

(68 general purpose registers, 16 special

registers)

u

37 single word instructions

u

14-bit instructions

u

8-level stacks

u

Operating voltage : 2.5 V ~ 5.5 V (PRD Disable)

4.5 V ~ 5.5 V (PRD Enable)

u

Operating frequency : DC ~ 20 MHz

u

The most fast execution time is 200 ns under

20 MHz in all single cycle instructions except

the branch instruction

u

Addressing modes include direct, indirect and

relative addressing modes

u

Power-on Reset

u

Power edge-detector Reset

u

Power range-detector Reset

u

Sleep Mode for power saving

u

Four interrupt sources:

-External INT pin

-TMR0 timer

-A/D conversion completion

-PortB<7:4> interrupt on change

u

A/D converter module:

-Four analog inputs multiplexed into one A/D

converter

-8-bit resolution

u

4 types of oscillator can be selected by

programming option:

RC

－Low cost RC oscillator

LFXT

－Low frequency crystal oscillator

XTAL

－Standard crystal oscillator

HFXT

－High frequency crystal oscillator

u

8-bit real time clock/counter(RTCC) with 8-bit

programmable prescaler

u

On-chip RC oscillator based Watchdog

Timer(WDT)

u

13 I/O pins with their own independent

direction control

3. Applications

The application areas of this MDT1051 range from

appliance motor control and high speed automotive

to low power remote transmitters/receivers, pointing

devices, and telecommunications processors, such

as Remote controller, small instruments, chargers,

toy, automobile and PC peripheral … etc.