MTU420 Ver la hoja de datos (PDF) - Unspecified

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Fabricante

MTU420

4-Bit Micro-Controller with LCD Driver, 2K Word

Unspecified 

MYSON

TECHNOLOGY

MTU420

GENERAL DESCRIPTION

The MTU420 is an LCD driver with an embedded high-performance 4-bit microcomputer. It contains all the

necessary functions in a single chip: dual clock, 4-bit parallel processing ALU, ROM, RAM, input/output

ports, timer, clock generator, LCD driver, look-up table and watchdog timer. The set of 118 instructions

includes not only 4-bit operation and manipulation instruction but also various conditional branch

instructions, and LCD driver data transfer instructions that are powerful and easy to follow. The halt function

stops internal operations other than the oscillator, divider and LCD driver in order to minimize power

dissipation. The stop function stops all clocks in the chip.

BLOCK DIAGRAM

I/O I/O

A1~4 B1~4 P1~4

BI-

DIRECTION

I/O PORT

OUTPUT

PORT

S1~4

M1~4

COM1~6

VDD1 VDD2 VDD3

26 SEGMENTS

LCD DRIVE

INPUT

PORT

SEGMENT PLA

XTIN

AC

XTOUT

OSC

DAA

CKT

CFIN

CFOUT WAIT CNT

ALU

T1

SCG T2

T3

T4

CUP1

CUP2

PREDIVIDER

WATCHDOG

TIMER

6-BIT

PRESET

TIMER

CONTROL

CIRCUIT

RES INT

LOOK-UP

TABLE

128x8

INDEX

BUFFER

RAM

(128x4)

11-BIT PC

STACK 8

LEVELS

INSTRUCTION

DECODE

ROM (2048x16)

MTU420 Revision 2.9 02/17/1998

2/11

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