HD66520 datasheet(1/45 Pages) HITACHI

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HD66520 Datasheet(PDF) 1 Page - Hitachi Semiconductor

Part #	HD66520

Description	160-Channel 4-Level Grayscale Display Column Driver with Internal Bit-Map RAM

Download	45 Pages

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Manufacturer	HITACHI [Hitachi Semiconductor]

Direct Link	http://www.renesas.com/eng

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1 / 45 page

1014

HD66520T

(160-Channel 4-Level Grayscale Display Column Driver with

Internal Bit-Map RAM)

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: 3.0 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 × two planes)

• CPU interface

 SRAM interface

 Address bus: 16 bits, data bus: 8 bits

Manufacturer	Part #	Datasheet	Description
Hitachi Semiconductor	HD66523	145Kb / 19P	(240-Channel Common Driver with Internal LCD Timing Circuit)

Manufacturer	Part #	Datasheet	Description
NEC	UPD16661A	187Kb / 36P	160-OUTPUT LCD COLUMN SEGMENT DRIVER WITH RAM
NEC	UPD16664	347Kb / 52P	144/160/184/208-OUTPUT LCD COLUMN SEGMENT DRIVER WITH RAM
New Japan Radio	NJU6675	1Mb / 36P	BIT MAP LCD DRIVER????
Supertex, Inc	HV633PG-G	813Kb / 13P	32-Channel, 128-Level Amplitude Gray-Shade Display Column Driver
	HV623	64Kb / 10P	32-Channel 128-Level Amplitude Gray-Shade Display Column Driver
	HV633	390Kb / 10P	32-Channel 128-Level Amplitude Gray-Shade Display Column Driver
	HV633	1Mb / 12P	32-Channel, 128-Level Amplitude Gray-Shade Display Column Driver
	HV633	109Kb / 11P	32-Channel 128-Level Amplitude Gray-Shade Display Column Driver
New Japan Radio	NJU6578	1Mb / 36P	BIT MAP LCD DRIVER????
New Japan Radio	NJU6583	1Mb / 40P	BIT MAP LCD DRIVER????

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