參數(shù)資料
型號: HD66728
廠商: Hitachi,Ltd.
英文描述: 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點圖形LCD控制器)
中文描述: 112 × 80點圖形LCD控制器/驅(qū)動器(112 × 80點圖形液晶顯示控制器)
文件頁數(shù): 35/138頁
文件大?。?/td> 2158K
代理商: HD66728
HD66728
35
Instructions
Outline
Only the instruction register (IR) and the data register (DR) of the HD66728 can be controlled by the MPU.
Before starting internal operation of the HD66728, control information is temporarily stored in these
registers to allow interfacing with various peripheral control devices or MPUs which operate at different
speeds. The internal operation of the HD66728 is determined by signals sent from the MPU. These signals,
which include the register selection signal (RS), the read/write signal (R/W), and the data bus signal (DB0
to DB7), make up the HD66728 instructions. There are five categories of instructions that:
Control the display
Control power management
Set internal RAM addresses
Transfer data with the internal RAM
Control key scan (when serial interface mode)
Normally, instructions that perform data transfer with the internal RAM are used the most. However, auto-
incrementation by 1 (or auto-decrementation by 1) of internal HD66728 RAM addresses after each data
write can lighten the MPU program load.
Because instructions other than clear display instruction are executed in 0 cycle, instructions can be written
in succession.
While the clear display instruction is being executed for internal operation, or during reset, no instruction
other than the key scan read instruction can be executed.
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