T6LE2

2006-09-20

4

Pin Function

Pin Name

I/O

Function

DI/O

DO/I

I/O

Vertical shift clock, output enable input / output select pin

These pins are used to input and output shift data. These pins are switched between input and

output by setting the U/D pin as shown below.

U/D

DI/O

DO/I

H

Input

Output

L

Output

Input

• When set for input

This pin is used to feed data into the shift registers at the first stage of the LCD driver. The data is

latched into the shift registers at the rising edge of CPVL/R.

• When set for output

When two or more T6LE2 are cascaded, this pin outputs the data to be fed into the next stage.

This data changes state synchronously with the falling edge of CPVL/R.

U/DL

U/DR

I/O

Transfer direction select / vertical shift clock, output enable input / output select pin

This pin specifies the direction in which data is transferred through the shift registers.

The shift register data is shifted synchronously with the rising edge of CPV as follows:

When U/D is high, data is shifted in the direction

U/D

= “H”: G1 → G2 → G3 → G4 → ··· → G300

When U / D is low, the direction is reversed to give

U/D

= “L”: G300 → G299 → G298 → G297 → ··· → G1

U/D

Input

Output

CPVR

CPVL

L

OE

R

OE

L

CPVL

CPVR

H

OE

L

OE

R

CPVL

CPVR

I/O

Vertical shift clock

• When set for input:

This is the shift clock for the shift registers. Data is shifted through the shift registers

synchronously with the rising edge of CPVL/R.

• When set for output:

The signal input to CPVL/R is output to CPVR/L asynchronous to other signals.

These pins are switched between input and output by setting the U/D pin as below.

U/D

CPVL

CPVR

H

Input

Output

L

Output

Input

OE

L

OE

R

I/O

Output enable pin

When set for input:

These signals control the data appearing at the LCD panel drive pins (G1 through G300).

OE

L/R doesn’t synchronize with the CPVL/R.

When set for output:

These pins are switched between input and output by setting the U/D pin as below.

U/D

OE

L

OE

R

H

Input

Output

L

Output

Input