LC75874E Schematic ( PDF Datasheet ) - Sanyo Semicon Device

Teilenummer	LC75874E
Beschreibung	1/4-Duty General-Purpose LCD Display Driver
Hersteller	Sanyo Semicon Device
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Gesamt 16 Seiten Ordering number : EN5800 CMOS LSI LC75874E, 75874W 1/4-Duty General-Purpose LCD Display Driver Overview The LC75874E and LC75874W are 1/4-duty general- purpose microprocessor-controlled LCD driver that can be used in applications such as frequency display in products with electronic tuning. In addition to being able to drive up to 264 segments directly, the LC75874E and LC75874W can also control up to 8 general-purpose output ports. Since the LC75874E and LC75874W use separate power supply systems for the LCD drive block and the logic block, the LCD driver block power-supply voltage can be set to any voltage in the range 2.7 to 6.0 V, regardless of the logic block power-supply voltage. Features • Support for 1/4-duty 1/2-bias or 1/4-duty 1/3-bias drive techniques under serial data control (up to 264 segments) • Serial data input supports CCB format communication with the system controller. • Serial data control of the power-saving mode based backup function and the all segments forced off function. • Serial data control of switching between the segment output port and general-purpose output port functions. • High generality, since display data is displayed directly without the intervention of a decoder circuit. • Independent VLCD for the LCD driver block (VLCD can be set to any voltage in the range 2.7 to 6.0 V, regardless of the logic block power-supply voltage.) • The INH pin allows the display to be forced to the off state. • RC oscillator circuit Package Dimensions unit: mm 3174-QFP80E [LC75874E] unit: mm 3220-SQFP80 [LC75874W] SANYO: QFP80E SANYO: SQFP80 • CCB is a trademark of SANYO ELECTRIC CO., LTD. • CCB is SANYO’s original bus format and all the bus addresses are controlled by SANYO. SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 31398RM (OT) No. 5800-1/16 Serial Data Transfer Format 1. When CL is stopped at the low level LC75874E, 75874W CCB address 8 bits Display data 68 bits Control data 10 bits DD 2 bits CCB address 8 bits Display data 68 bits Fixed data 10 bits DD 2 bits CCB address 8 bits Display data 64 bits Fixed data 14 bits DD 2 bits CCB address 8 bits Note: DD is the direction data. Display data 64 bits Fixed data 14 bits DD 2 bits No. 4465-No. 5800-6/16 6 Page 1/4-Duty 1/3-Bias Drive Scheme LC75874E, 75874W COM1 COM2 COM3 COM4 LCD driver output when all LCD segments corresponding to COM1, COM2, COM3, and COM4 are off. LCD driver output when only LCD segments corresponding to COM1 are on (lit). LCD driver output when only LCD segments corresponding to COM2 are on. LCD driver output when LCD segments corresponding to COM1 and COM2 are on. LCD driver output when only LCD segments corresponding to COM3 are on. LCD driver output when LCD segments corresponding to COM1 and COM3 are on. LCD driver output when LCD segments corresponding to COM2 and COM3 are on. LCD driver output when LCD segments corresponding to COM1, COM2, and COM3 are on. LCD driver output when only LCD segments corresponding to COM4 are on. LCD driver output when LCD segments corresponding to COM2, and COM4 are on. LCD driver output when all LCD segments corresponding to COM1, COM2, COM3, and COM4 are on. 1/4-Duty 1/3-Bias Waveforms No. 4465-No. 5800-12/16 12 Page
Seiten	Gesamt 16 Seiten
PDF Download	[ LC75874E Schematic.PDF ]

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Besondere Datenblatt

Teilenummer	Beschreibung	Hersteller
LC75874	1/4-Duty General-Purpose LCD Display Driver	Sanyo Semicon Device
LC75874E	1/4-Duty General-Purpose LCD Display Driver	Sanyo Semicon Device
LC75874W	1/4-Duty General-Purpose LCD Display Driver	Sanyo Semicon Device

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