MSM6665C-XX datasheet(12/31 Pages) OKI

Part #	MSM6665C-XX

Description	DOT MATRIX LCD CONTROLLER WITH 17-DOT COMMON DRIVER AND 80-DOT SEGMENT DRIVER

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Manufacturer	OKI [OKI electronic componets]

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¡ Semiconductor

MSM6665C-xx

FEDL6665C-02

Command Description

[D7, D6, D5, D4, D3, D2, D1, D0], X=don’t care

• LPA (Load Pointer Address)

[1,1,A5,A4,A3,A2,A1,A0]

The command sets "address" data into the address pointer to specify an address on

which command execution affects and an address where display data is stored. The

"address" is a number between 0 and 2FH, given by A0 through A5 in hexadecimal.

When addresses 30H through 3FH are specified, display data and CHB, CSC, CSB, CCB

commands become invalid through an address pointer is set up. Normally, the address

pointer is a loop of 0H through 2FH.

• LOT (Load Option)

[1,0,1,1,X,X,I1,I0]

This command indicates some specific operation of display at the current address which

is performed each time of AINC command execution.

Operation is specified by bit I1 and I0 of the command.

I1

I0

Operation

Operation is cancelled. (No operation)

00

Hereafter, equivalent to writing blank code at each AINC execution.

01

Hereafter, Cursor-off and blink-cancellation are executed at each AINC execution.

10

Both of above two operations are made.

11

Note: When blink-cancellation is executed, all RAM data, which controls blinks for each bit

of the arbitrator, go zeros.

• BKCG 1/0 (Bank Change 1/0)

[1,0,0,X,0,0,0,1/0]

Command used to do switching between display address groups (switching between

BANKs), which is valid only when 1/9duty display is selected.

When D0 is "0", display address range becomes 0 through 15, and 32 through 47.

When D0 is "1", display address range becomes 16 through 31, and 32 through 47.

Command execution and display data setting are not affected by Bank setting.

The D0 status is not changed by Reset inputting. The D0 status is unknown when the

system is powered on. So D0 must be set to "0" or "1" with the command.

• SOE/D (Serial Out Enable/Disable)

[1,0,0,X,0,1,1,1/0]

Command used to control the impedance of SO output pin.

When D0 is "1", display data is output via SO pin. When D0 is "0", SO pin goes to high

impedance.

The D0 status is not changed by Reset inputting. The D0 status is unknown when the

system is powered on. So D0 must be set to "0" or "1" with the command.

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