hd66765 Renesas Electronics Corporation., hd66765 Datasheet - Page 11
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)
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HD66765
Liquid Crystal Display Driver Circuit
The liquid crystal display driver circuit consists of 396 segment signal drivers (SEG1 to SEG396).
Display pattern data is latched when 396-bit data has arrived. The latched data then enables the segment
signal drivers to generate drive waveform outputs. The shift direction of 396-bit data can be changed by
the SGS bit by selecting an appropriate direction for the device mounting configuration.
When multiplexing drive is not used, or during standby mode, all of the common and segment signal
drivers listed above, and the common drivers from the HD66764, output the GND level, halting the
display.
Interface with Common Driver
A serial interface circuit provides an interface with the HD66764 common driver. When sending an
instruction setting from the HD66765 to a common driver, a register setting value from within the
HD66765 is transferred via the serial interface circuit. A transfer is started by setting a serial transfer
enable in the HD66765. However, transfer to and reading from the common driver are not possible
during standby. For details, see the Common Serial Transfer section.
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