BU97941FV Datasheet, PDF (1/25 Pages) Rohm – Multifunction LCD Segment Driver

BU97941FV
Datasheet
Multifunction LCD Segment Driver
BU97941FV MAX 104 segments (SEG26×COM4)
●Features
„ Integrated RAM for display data (DDRAM):
26 x 4 bit (Max 104 Segments)
„ LCD drive output:
4 Common output, 26 Segment output
„ Integrated 4ch LED driver circuit
„ Support standby mode
„ Integrated Power-on-Reset circuit (POR)
„ Integrated Oscillator circuit
„ No external component
„ Low power consumption design
„ Independent power supply for LCD driving
●Key Specifications
■ Supply Voltage Range:
+1.8V to +3.6V
■ LCD drive power supply Range: +2.7V to +5.5V
■ Operating Temperature Range: -40°C to +85°C
■ Max Segments:
104 Segments
■ Display Duty:
Static, 1/3, 1/4 selectable
■ Bias:
Static, 1/3
■ Interface:
3wire 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 appliance
„ Meter equipment
etc.
●Typical Application Circuit
SSOP-B40
13.60mm x 7.80mm x 2.00mm
5.0V
3.3V
*About resistor value
Determine the optimal value
based on the applied current
With 25mA as max per 1 port
VLCD
VDD
LED1
LED2
LED3
LED4
BU979 41FV
VSS
CSB SD SCL
SEG0 to SEG25
COM0 to COM3
VLED=5.0V
LCD
Signal input from controller
Figure 1. Typical application circuit
○Product structure：Silicon monolithic integrated circuit
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© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111ï½¥14ï½¥001
○This product is not designed protection against radioactive rays.
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TSZ02201-0A0A2D300080-1-2
1.Jun.2012 Rev.001