HD66137T

7

Pin Functions (cont)

Classification

Symbol

Pin No.

Connected

to

I/O

Function

Control signal

SHL

251

—

Input

This pin switches shift directions.

MODE0

"H"

"H"

"L"

"H"

"H"

"L"

SHL

"H"

level

"L"

level

MODE1

"H"

"L"

"H"

"H"

"L"

"H"

Shift direction

DIO2

→SR1········SR240→DIO1

DIO2

→SR21········SR220→DIO1

DIO2

→SR41········SR200→DIO1

Right shift

DIO1

→SR240········SR1→DIO2

DIO1

→SR220········SR21→DIO2

DIO1

→SR200········SR41→DIO2

Left shift

SR1, SR2•••SR240 correspond to X1,

X2•••X240.

Note: The 40 or 80 pins invalidated at the

200-output or 160-output mode output the

non-selected level synchronized every time;

release these pins.

LCD drive

output

X1 to

X240

1 to 240 LCD

Output

LCD drive output

By a combination of the display data and the

M signal, when

DISPOFF is set to V

VH, VL, or VM is selected and transmitted to

the output circuit.

1

0

11

00

VL

VM

VH

M

D

Output

level

VM

Note:

Configuring the LCD panel using the HD66137 when using the select SEGMENT driver.

The Select SEGMENT driver

SEGMENT driver

Select

HD66130 (320 OUT)

q

HD66132 (240 OUT)

×

HD66134S (240 OUT)

q

HD66136 (400 OUT)

q