LC5812 View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LC5812

4-Bit Microcomputer with Internal LCD Driver

SANYO -> Panasonic 

LC5812

Continued from preceding page.

• Micro-level oprerating current.

Only micro-level current is needed to operate the equipment if the HALT function is used efficiently. Although the

exact current drain depends on the oscillation frequency (and the oscillator) and the program structure, a typical current

requirement is about 5µA to run the clock program if the optimum technique is used to design the program.

• Enhanced HALT/HOLD release and interrupt functions.

· Five types of HALT/HOLD release functions and five types of interrupt functions.

· External interrupt function (included in the above 5 interrupt functions).

· Up to 8 levels of subroutine nesting (common with interrupts).

• Enhanced hardware for greater processing capability.

· Built-in segment PLA circuit : Is able to join the LCD driver outputs to any patterns on the LCD panel without

software.

· Built-in decimal up/down counter.

· Built-in 8-bit programmable timer.

· The entire RAM area can be used as a working area (bank switching).

· Built-in data pointer.

· All instructions per step operation.

· Built-in clock oscillator and frequency divider circuit.

• Various LCD output terminals for LCD panel drive (42 terminals).

LCD panel

1/3 bias 1/3 duty

1/2 bias 1/3 duty

1/2 bias 1/2 duty

Static

Number of LCD segments

126 segments (max.)

126 segments (max.)

84 segments (max.)

42 segments (max.)

• The LCD panel drive output terminal can be switched to the general-purpose output terminal.

• A number of input and output terminals are provided.

Input dedicated port : 2 ports/8 pins

Input/output port :

2 ports/8 pins

Output dedicated port : 1 port/4 pins

• An initial reset terminal is provided.

• Built-in oscillation circuit for system clock.

Two kinds of oscillation circuits are available : one for the system clock and the other for clock oscillation.

• Number of instructions : 134

• ROM : 2,048×16bits

• RAM : 152×4bits

• Form of shipment : QIP80 (or chip)

Application Development Support System

An evaluation chip (LC5897) and special devices for the application development tool will be provided.

• SDS410 system

Enables the user to create an application development program in assembler language (edit-assembling).

• EVA510+TB5812+DCB1+Application Evaluation Board+LC5897

Modification and debugging of the application development program are possible by connecting to the SDS410.

The EVA510 is identical with the EVA410 except that the control ROM has been replaced.

• TB5812+DCB1+Application Evaluation Board+LC5897

Load and evaluation is possible using the EPROM (2732) in which the data for the application development program is

contained.

Note) The application evaluation board is created by the user.

Either LEDs or on LCD can be used as the display element.

Application Examples

• Portable equipment (camera control, various card controls, high-quality electric calculators and timers).

• Acoustic equipment (electronic control, electronic tuning, and clocks).

• Household electrical apparatus (remote control, and timer control).

• Telephone equipment (telephone control, and display control).

No.2058–2/17

Share Link: