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HD66520T

Hitachi
Part Number HD66520T
Manufacturer Hitachi
Description 160-Channel 4-Level Grayscale Display Column Driver
Published Apr 16, 2018
Detailed Description HD66520T (160-Channel 4-Level Grayscale Display Column Driver with Internal Bit-Map RAM) Preliminary Description The HD...
Datasheet PDF File HD66520T PDF File

HD66520T
HD66520T

Overview
HD66520T (160-Channel 4-Level Grayscale Display Column Driver with Internal Bit-Map RAM) Preliminary Description The HD66520 is a column driver for liquid crystal dot-matrix graphic display systems.
This LSI incorporates 160 liquid crystal drive circuits and a 160 × 240 × 2-bit bit-map RAM, which is suitable for LCDs in portable information devices.
It also includes a general-purpose SRAM interface so that draw access can be easily implemented from a general-purpose CPU.
The HD66520 also has a new arbitration method which prevents flicker when the CPU performs draw access asynchronously.
The on-chip display RAM greatly decreases power consumption compared to previous liquid crystal display systems because there is no need for high-speed data transfer.
The chip also incorporates a four-level grayscale controller for enhanced graphics capabilities, such as icons on a screen.
Features • Duty cycle: 1/64 to 1/240 • Liquid crystal drive circuits: 160 • Low-voltage logic circuit: 3.
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