參數(shù)資料
型號： HD66787
廠商： Renesas Technology Corp.
英文描述： 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
中文描述： 528與262,144色顯示RAM和低電源電路通道，單芯片驅(qū)動(dòng)器的溫度和旋鈴聲非晶硅TFT（薄膜晶體管）與Incorporat小組
文件頁數(shù)： 120/159頁
文件大?。?/td> 1607K
代理商： HD66787
HD66787
Preliminary
Rev.0.22, May.23.2003, page 120 of 159
γ
-Correction Registers
Register
Groups
Positive
Polarity
Negative
Polarity
Description
PRP0 2 to 0
PRN0 2 to 0
Variable resistor VRHP (N)
Gradient
adjustment
PRP1 2 to 0
PRN1 2 to 0
Variable resistor VRLP (N)
VRP0 3 to 0
VRN0 3 to 0
Variable resistor VRP (N)0
Amplitude
adjustment
VRP1 4 to 0
VRN1 4 to 0
Variable resistor VRP (N)1
PKP0 2 to 0
PKN0 2 to 0
8-to-1 selector (voltage level of grayscale 1)
PKP1 2 to 0
PKN1 2 to 0
8-to-1 selector (voltage level of grayscale 8)
PKP2 2 to 0
PKN2 2 to 0
8-to-1 selector (voltage level of grayscale 20)
PKP3 2 to 0
PKN3 2 to 0
8-to-1 selector (voltage level of grayscale 43)
PKP4 2 to 0
PKN4 2 to 0
8-to-1 selector (voltage level of grayscale 55)
Fine adjustment
PKP5 2 to 0
PKN5 2 to 0
8-to-1 selector (voltage level of grayscale 62)
Ladder resistors and 8-to-1 selector
Block configuration
The block diagram of page
117
consists of two ladder resistors including variable resistors, and 8-to-1
selectors which select the voltage generated by the ladder resistors to output a reference voltage for the
grayscale voltage. The variable resistors and the 8-to-1 selectors are controlled by the
γ
correction registers.
Pins that are connected to a variable resistor are also provided to compensate the variation among the
panels.
Variable resistor
There are three kinds of variable resistors for the gradient adjustment (VRHP(N)/VRLP(N)), the amplitude
adjustment (1) (VRP(N)0), and the amplitude adjustment (2) (VRP(N)1). The resistance is determined by
the gradient adjustment and amplitude adjustment registers as is shown below.
Gradient adjustment
Amplitude adjustment (1)
Amplitude adjustment (2)
Contents of Register
PRP(N) 0/1[2:0]
Resistance
VRHP(N)
VRLP(N)
Contents of Register
VRP(N)0[3:0]
Resistance
VRP(N)0
Contents of Register
VRP(N)1[4:0]
Resistance
VRP(N)1
000
0R
0000
0R
00000
0R
001
4R
0001
2R
00001
1R
010
8R
0010
1101
4R
26R
00010
11101
2R
29R
011
12R
100
16R
101
20R
110
24R
1111
28R
11110
30R
111
28R
1111
30R
11111
31R
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
HD66840F25 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Controller
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