LH168M 데이터 시트보기 (PDF) - Sharp Electronics

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LH168M

384-output TFT-LCD Source Driver IC

Sharp Electronics 

LH168M

VLS

Operational Amplifier

+

O

–

GND

From Internal Circuit

¿Applicable pins¡

XO1-XO128,

YO1-YO128,

ZO1-ZO128

Fig. 5 Output Circuit

FUNCTIONAL DESCRIPTION

Pin Functions

SYMBOL

VCC

VLS

GND

SPIO

SPOI

LBR

LS

CKP

CKN

VH0-VH64

VL0-VL64

X0P-X2N

Y0P-Y2N

Z0P-Z2N

XO1-XO128,

YO1-YO128,

ZO1-ZO128

FUNCTIONS

Used as power supply pin for digital circuit, connected to +3.0 to +3.6 V.

Used as power supply pin for analog circuit, connected to +8.0 to +12.0 V.

Used as ground pin, connected to 0 V.

Used as input pins of start pulse and also used as output pins for cascade connection.

When "H" is input into start pulse input pin, data sampling is started. On completion of

sampling, "H" pulse is output to output pin for cascade connection. Pin functions are

selected by LBR. For selecting, refer to "Functional Operations".

Used as input pin for selecting the shift register direction. For selecting, refer to

"Functional Operations".

Used as input pin for parallel transfer from sampling memory to hold memory. Data is

transferred at the rising edge and output from LCD drive output pin.

Used as shift clock input pin. Data is latched into sampling memory from data input pin at

the falling edge and the rising edge. (Use RSDS input voltage : 0 V to VCC – 1.0 V)

Used as reference voltage input pins. Hold the reference voltage fixed during the period of

LCD drive output. For relation between input data and output voltage values, refer to

"Output Voltage Value". For internal gamma correction, refer to "Gamma Correction

Value". Observe the following relation for input voltage.

VLS > VH0 ≥ VH8 ≥ π ≥ VH64 ≥ VL64 ≥ VL56 ≥ π ≥ VL0 > GND.

Used as data input pins of R, G, and B colors. 3-bit data are input from data pins at the

falling edge and the rising edge of CKP (CKN). For relation between input data and output

voltage values, refer to "Functional Operations" and "Output Voltage Value". Select the

data to be entered into X, Y, and Z according to picture element arrays of the panel.

Used as LCD drive output pins which output the voltage c/orresponding to the input of data

input pins (X0P to X2N, Y0P to Y2N, Z0P to Z2N). Data of XO1 to XO128 correspond to X0P

to X2N. Data of YO1 to YO128 correspond to Y0P to Y2N, and data of ZO1 to ZO128

correspond to Z0P to Z2N. For relation between input data and output voltage values, refer

to "Functional Operations" and "Output Voltage Value".

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