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)： 111/159頁
文件大小： 1607K
代理商： HD66787
HD66787
Preliminary
Rev.0.22, May.23.2003, page 111 of 159
Graphics Operation Function
The HD66787 greatly reduces the load on the graphics-processing software in the microcomputer with the
18-bit bus architecture and the graphics bit operation. The graphics bit operation includes:
1. The write data mask function that selectively rewrites some bits of 18-bit write data.
2. The conditional rewrite function that compares the write data and the compare bit data and writes
the data sent from the microcomputer only when the conditions are satisfied.
The graphics bit operation is controlled by setting bits in the entry mode register and RAM-write-data mask
register, and the write operation from the microcomputer.
Graphics Operation
Bit Setting
Operation Mode
I/D
AM
LG2–0
Operation and Usage
Write mode 1
0/1
0
000
Horizontal data replacement
Write mode 2
0/1
1
000
Vertical data replacement
Write mode 3
0/1
0
110 111
Conditional horizontal data replacement
Write mode 4
0/1
1
110 111
Conditional vertical data replacement
Microcomputer
Write data latch
Logical operation bit
(LG2-0)
Compare bit (CP17-0)
Write-mask register
(WM17-0)
Logical/Compare operation (LG2-0)
000: replacement
110: replacement with matched write
111: replacement with unmatched write
Write bit mask
Graphics RAM (GRAM)
Address
counter
(AC)
+1/-1
+256
18
18
16
18
3
18
18
Graphics operation flow
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
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