
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
This pin is used to perform input / output settings for CPVL, CPVR,
OE
L,
OE
R.
U/D
Input
Output
CPVR
CPVL
L
OE
R
OE
L
CPVL
CPVR
H
OE
L
OE
R
The voltage applied to this pin must be a DC-level voltage that is either high (V
DD
) or low (V
SS
).
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
OE
L/R is low : outputs shift data and data contents.
When
OE
L/R is high : controls the LCD panel drive output to V
EE
level.
When set for output:
The signal input to
OE
L/R is output to
OE
R/L.
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