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參數(shù)資料
| 型號(hào)： | HD66781 |
| 廠商： | Renesas Technology Corp. |
| 英文描述： | 720-channel Source Driver for a-Si TFT/Low Temperature Poly-Si TFT Panels with 262,144-color display RAM |
| 中文描述： | 720通道源驅(qū)動(dòng)的非晶硅薄膜晶體管/低溫多晶硅TFT面板與262,144色顯示RAM |
| 文件頁(yè)數(shù)： | 68/196頁(yè) |
| 文件大?。?/td> | 2416K |
| 代理商： | HD66781 |
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HD66781
Preliminary
Rev.0.5, July.31.2003, page 68 of 196
Power control 1 (R100h)
R/W
RS
IB15 IB14 IB13 IB12 IB11
DC
4
3
IB10
SAP
2
IB9
SAP
1
IB8
SAP
0
IB7
IB6
AP
2
IB5
AP
1
IB4
AP
0
IB3
IB2
DS
TB
IB1
IB0
W
1
DC
0
0
0
0
0
SLP
STB
STB:
When STB = 1, the HD66781 enters into the standby mode. In the standby mode, display operation
is completely halted, and all internal operations including the internal R-C oscillator and reception of
external clock pulse, are halted. Only instructions to release from the standby mode (STB = 0) and to start
oscillation are accepted during the standby mode.
In the standby mode, a serial transfer to the gate driver/power supply IC cannot be made and it requires
retransfer after release from the standby mode. Also in the standby mode, any change in the GRAM data or
instruction setting cannot be made, but GRAM data are retained.
SLP:
When SLP = 1, the HD66781 enters into the sleep mode. In the sleep mode, internal display
operation is halted except the R-C oscillator to reduce current consumption. No change is made to the
GRAM data or instructions during the sleep mode, and the GRAM data and the instructions are retained.
DSTB:
When DSTB = 1, the HD66781 enters into the deep standby mode, where the power supply for the
internal logic is turned off to save more power than the standby mode. The GRAM data and the instruction
setting are destroyed in the deep standby mode and it requires resetting after release from the deep standby
mode. Also in the deep standby mode, a serial transfer to the gate driver cannot be made and it requires a
retransfer after the release from the deep standby mode.
AP[2:0]:
Adjust the amount of constant current in the operational amplifier in the liquid crystal drive
power supply. When the amount of constant current is set large, the liquid crystal drive capacity will be
enhanced and the display quality will improve, while the current consumption will increase. Select an
optimum amount of current taking both the display quality and the current consumption into account.
When no display operation is required, set AP[2:0] = “3’h0” to halt the operation of operational amplifier
and step-up circuits to reduce the current consumption. Also if AP[2:0] is set to other than 0, the clock for
the step-up circuit DCCLK is output.
SAP[2:0]:
Adjust the amount of constant current in the operational amplifier of source driver. When the
amount of constant current is set large, the liquid crystal drive capacity is enhanced and the display quality
will improve, while the current consumption will increase. Select an optimum amount of current taking
both the display quality and the current consumption into account. When no display operation is required,
set SAP[2:0] = “3’h0” to halt the operation of operational amplifier and step-up circuits to reduce the
current consumption.
DC[4:3]:
Select the frequency of clocks for the step-up circuit (DCCLK). If the DCCLK frequency is set
high, display quality is enhanced due to increased drive capacity of step-up circuit, while power
consumption will be increased. Make an adjustment taking both display quality and power consumption
into consideration.
相關(guān)PDF資料 |
PDF描述 |
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| HD66787 | 528-channel, One-chip Driver with 262,144-color Display RAM and Power Supply Circuit for Low-temperature Poli-Si TFT (LTPS-TFT) Panels with Incorporat |
| HD66840 | Peripheral IC |
| HD66840F25 | LCD Controller |
| HD66840F30 | LCD Controller |
| HD66841FP | LCD Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD66787 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:528-channel, One-chip Driver with 262,144-color Display RAM and Power Supply Circuit for Low-temperature Poli-Si TFT (LTPS-TFT) Panels with Incorporat |
| HD66789 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:528-channel, One-chip Driver for Amorphous TFT Panels with 262,144-color display RAM, Power Supply Circuit, and Gate Circuit |
| HD667A66R | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:132 x 176-dot Graphics LCD Controller/Driver for 65K Colors |
| HD667B66R | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:132 x 176-dot Graphics LCD Controller/Driver for 65K Colors |
| HD66840 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
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