參數(shù)資料
型號(hào): 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): 63/159頁
文件大小: 1607K
代理商: HD66787
HD66787
Preliminary
Rev.0.22, May.23.2003, page 63 of 159
Read Data Read from GRAM (R22h)
RD17–0:
Read 18-bit data from GRAM. The bit assignment for the data that are read out from GRAM is
different according to the interface.
When data are read out from GRAM to the microcomputer, the first word read immediately after GRAM
address set are latched in the internal read-data latch, and thereby nullify the data in the data bus (DB17–0).
The second word is read as valid data. When the HD66787 performs an internal bit processing, such as
logical operation, it uses the data latched in the read-data latch. Therefore the processing is completed by
single read out operation. The data are expanded internally into 18 bits before going through the logical
operation. When the 8-/16-bit interfaces are selected, the GRAM data in the LSBs of R and B pixels are
not read out. This function is not available in RGB interface mode.
Read
data
GRAM data
R5
R4
R3
R2
R1
R0
G5
G4
G3
G2
G1
G0
B5
B4
B2
B1
B0
B3
Output
One pixel
DB
17
DB
16
DB
15
DB
14
DB
13
DB
12
DB
11
DB
10
DB
9
DB
8
DB
7
DB
6
DB
5
DB
4
DB
3
DB
2
DB
1
DB
0
RD
17
RD
16
RD
15
RD
14
RD
13
RD
12
RD
11
RD
10
RD
9
RD
8
RD
7
RD
6
RD
5
RD
4
RD
3
RD
2
RD
1
RD
0
18-bit interface
Read data from GRAM: Bit assignment
R/W RS
R
1
RAM Read data (RD17-0) The pin assignment for DB17-0 varies for each interface (see below).
相關(guān)PDF資料
PDF描述
HD66840 Peripheral IC
HD66840F25 LCD Controller
HD66840F30 LCD Controller
HD66841FP LCD Controller
HD66841FS LCD Controller
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