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GMS81C3004

CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER WITH LCD DRIVER

Hyundai Micro Electronics 

GMS81C3004

GMS81C3004

CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

WITH LCD DRIVER

1. OVERVIEW

1.1 Description

The GMS81C3004 is an advanced CMOS 8-bit microcontroller with 4K bytes of ROM. The device is one of GMS800 fam-

ily. The LG Semicon GMS81C3004 is a powerful microcontroller which provides a highly flexible and cost effective solu-

tion to many LCD applications such as controller with LCD and toys. The GMS81C3004 provides the following standard

features: 4K bytes of ROM, 256 bytes of RAM, 8-bit timer/counter, on-chip oscillator and clock circuitry. In addition, the

GMS81C3004 supports power saving modes to reduce power consumption.

Device name

GMS81C3004

ROM Size

4K bytes

RAM Size

256 bytes

Package

80QFP or DIE

1.2 Features

• 4K Bytes On-chip Program Memory

• 256 Bytes of On-chip Data RAM

(Included 64 bytes stack memory)

• Dot Matrix LCD Driver

- Max. 320 dots (40 seg. x 8 com.)

- 40 bytes of Display RAM

• Instruction Cycle Time:

- 0.5us, 1.9us, 3.8us, 15.2us at 4.19MHz

- 61us, 244us, 488us, 1.95ms at 32.768KHz

• 51 Programmable I/O pins

(Included 32 LCD pins)

• 2.2V to 5.5V Wide Operating Range

• Dual Clock Operation (4.19MHz, 32kHz)

• One 8-bit Basic Interval Timer

• Key Scan

• One 8-bit Timer/ Counter

• Watch Timer

• Watchdog timer

• Eight Interrupt sources

- External input: 3

- Keyscan input: 1

- Timer: 4

• Buzzer Driving port

- 500Hz ~ 130kHz

• 4-channel 5-bit On-chip Comparator

• Power Down Mode

- STOP mode

- SLEEP mode

1.3 Development Tools

The GMS81C3004 is supported by a full-featured macro

assembler, an in-circuit emulator CHOICE-DrTM.

In Circuit Emulators

LCD Simulator

Assembler

CHOICE-Dr. (with EVA81C)

Under development

LGS Macro Assembler

MAR. 1999 Ver 1.01

1

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