hd66520t Renesas Electronics Corporation., hd66520t Datasheet

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hd66520t

Manufacturer Part Number
hd66520t
Description
160-channel 4-level Grayscale Display Column Driver With Internal Bit-map Ram - Hitachi Semiconductor
Manufacturer
Renesas Electronics Corporation.
Datasheet

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Part Number:
hd66520tB0
Manufacturer:
TOYOCOM
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Part Number:
hd66520tB0
Manufacturer:
HITACHI/日立
Quantity:
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Description
The HD66520 is a column driver for liquid crystal dot-matrix graphic
incorporates 160 liquid crystal drive circuits and a 160
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
1014
(160-Channel 4-Level Grayscale Display Column Driver with
Duty cycle: 1/64 to 1/240
Liquid crystal drive circuits: 160
Low-voltage logic circuit: 3.0 to 5.5-V operation power supply voltage
High-voltage liquid crystal drive circuit: 8 to 28-V liquid crystal drive voltage
Grayscale display: FRC four-level grayscale display
Grayscale memory management: Packed pixel
Internal bit-map display RAM: 76800 bits (160 240 lines
CPU interface
SRAM interface
Address bus: 16 bits, data bus: 8 bits
Internal Bit-Map RAM)
HD66520T
240
2-bit bit-map RAM, which is suitable for
two planes)
display systems. This LSI

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