1

1

Read display data

1

0

Write display data

0

1

Read status

0

0

Write to internal register (command)

Display start line

register

Line counter

Display Data RAM

( DD RAM )

Display data latch

LCD drive circuit

MPU

interface

Colume

address

register

Colume

address

counter

To LCD Panel

D0 ~ D7

A0 , E1 , E2

R/W

RES

6. Display Control Instruction

Block Diagram

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◆

◆

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This 122×32 dots LCD Module built in two SBN1661G_M18-D LSI controller.

MPU interface

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◆

◆

◆

The SBN1661G_M18-D controller transfers data via 8-bit bidirecional data buses (Do to

D7), it can fit any MPU if it corresponds to SBN1661G_M18-D Read and Write Timing

Characteristics.

Data transfer

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◆

◆

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The SBN1661G_M18-D driver uses the A0, E and R/W signals to transfer data between

the system MPU and internal registers, The combinations used are given in the table

below.

A0

R/W

Function

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