hd66765 Renesas Electronics Corporation., hd66765 Datasheet - Page 14
hd66765
Manufacturer Part Number
hd66765
Description
396-channel Segment Driver With Internal Ram For 4096-color Displays - Hitachi Semiconductor
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD66765.pdf
(71 pages)
- Current page: 14 of 71
- Download datasheet (696Kb)
Instructions
Outline
The HD66765 uses the 16-bit bus architecture. Before the internal operation of the HD66765 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 HD66765 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 HD66765 instructions.
There are nine categories of instructions that:
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Normally, instructions that write data are used the most. However, an auto-update of internal GRAM
addresses after each data write can lighten the microcomputer program load.
Because instructions are executed in 0 cycles, they can be written in succession.
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
Interface with the common driver
14
HD66765
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