hd66766r Renesas Electronics Corporation., hd66766r Datasheet - Page 17

• Manufacturer Part Number: hd66766r
• Description: 132 X 176-dot Graphics Lcd Controller/driver For 65k Colors - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

HD66766R
Instructions
Outline
The HD66766R uses the 16-bit bus architecture. Before the internal operation of the HD66766R starts,
control information is temporarily stored in the registers described below to allow high-speed interfacing
with a high-performance microcomputer. The internal operation of the HD66766R is determined by
signals sent from the microcomputer. These signals, which include the register selection signal (RS), the
read/write signal (R/W), and the data bus signals (DB15 to DB0), make up the HD66766R instructions.
Normally, instructions that write data are used the most.
addresses after each data write can lighten the microcomputer program load. Because instructions are
executed in 0 cycles, they can be written in succession.
There are eight categories of instructions that:
Specify the index
Read the status
Control the display
Control power management
Process the graphics data
Set internal GRAM addresses
Transfer data to and from the internal GRAM
Set grayscale level for the internal grayscale palette table
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However, an auto-update of internal GRAM
Rev. 1.0-1 / September 2002