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ML9058E

132-Channel LCD Driver with Built-in RAM for LCD Dot Matrix Displays

LAPIS Semiconductor Co., Ltd. 

LAPIS Semiconductor

FEDL9058E-01

ML9058E

PIN DESCRIPTION

Function

Pin name

Number

of pins

DB0 to

DB7

8

A0

1

RES

1

CS1

2

CS2

MPU

Interface

RD

1

(E)

WR

(R/W)

1

C86

1

I/O

Description

These are 8-bit bi-directional data bus pins that can be connected to

8-bit standard MPU data bus pins. When a serial interface is selected

(P/S = “L”):

DB7: Serial data input pin (SI)

I/O DB6: Serial clock input pin (SCL)

In this case, DB0 to DB5 will be in the high impedance state. DB0 to

DB7 will all be in the high impedance state when the chip select is in

the inactive state.

Fix the DB0 to DB5 pins at “H” or “L” level.

Normally, the lowest bit of the MPU address bus is connected and

used for distinguishing between data and commands.

I

A0 = “H”: Indicates that DB0 to DB7 is display data.

A1 = “L”: Indicates that DB0 to DB7 is control data.

I

Initial setting is made by making RES = “L”. The reset operation is

made during the active level of the RES signal.

These are the chip select signals. The Chip Select of the LSI

I becomes active when CS1 is “L” and also CS2 is “H” and allows the

input/output of data or commands.

The active level of this signal is “L” when connected to an 80-series

MPU. This pin is connected to the RD signal of the 80-series MPU,

and the data bus of the ML9058E goes into the output state when this

signal is “L”.

I The active level of this signal is “H” when connected to a 68-series

MPU. This pin will be the Enable and clock input pin when connected

to a 68-series MPU.

When a serial interface is selected (P/S = “L”), fix this pin at “H” or “L”

level.

The active level of this signal is “L” when connected to an 80-series

MPU. This pin is connected to the WR signal of the 80-series MPU.

The data on the data bus is latched into the ML9058E at the rising

edge of the WR signal.

I When connected to a 68-series MPU, this pin becomes the input pin

for the Read/Write control signal.

R/W = “H”: Read, R/W = “L”: Write

When a serial interface is selected (P/S = “L”), fix this pin at “H” or “L”

level.

This is the pin for selecting the MPU interface type.

I C86 = “H”: 68-Series MPU interface.

C86 = “L”: 80-Series MPU interface.

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