BU9799KV Datasheet, PDF (1/28 Pages) Rohm – Standard LCD Segment Driver

Datasheet
Standard LCD Segment Driver
BU9799KV MAX 200 segments (SEG50×COM4)
●Features
„ Integrated RAM for display data (DDRAM):
50 x 4 bit (Max 200 Segment)
„ LCD drive output :
4 Common output, 50 Segment output
„ Integrated Buffer AMP for LCD driving
„ Integrated Oscillator circuit
„ No external components
„ Low power consumption design
„ Independent power supply for LCD driving
„ Integrated Electrical volume register (EVR) function
●Key Specifications
■ Supply Voltage Range:
+2.5V to +5.5V
■ LCD drive power supply Range: +2.5V to +5.5V
■ Operating Temperature Range: -40°C to +85°C
■ Max Segments:
200 Segments
■ Display Duty:
1/4
■ Bias:
1/2, 1/3 selectable
■ Interface:
2wire serial interface
●Package
W (Typ.) x D (Typ.) x H (Max.)
●Applications
„ Telephone
„ FAX
„ Portable equipment (POS, ECR, PDA etc.)
„ DSC
„ DVC
„ Car audio
„ Home electrical appliances
„ Meter equipment, etc.
VQFP64
12.00mm x 12.00mm x 1.60mm
●Typical Application Circuit
VLCD
VDD
VDD
VLCD
Controller
VDD
SD
SCL
INHb
OSCIN
TEST1
TEST2
TEST3
VSS
COM0
COM1
COM2
COM3
SEG0
SEG1
SEG49
Segment
LCD
Internal oscillator circuit mode
Figure 1. Typical application circuit
○Product structure：Silicon monolithic integrated circuit
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TSZ22111ï½¥14ï½¥001
○This product is not designed for protection against radioactive rays.
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TSZ02201-0A0A2D300040-1-2
23.Jan.2015 Rev.003