BU97941FV-LB Datasheet, PDF (1/26 Pages) Rohm – Multifunction LCD Segment Driver

Datasheet
MAX 104 segments (SEG26×COM4)
Multifunction LCD Segment Driver
BU97941FV-LB
This is the product guarantees long time support in Industrial
market.
Features
„ Long Time Support Product for Industrial
Applications.
„ 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
„ Industrial Equipment
„ Telephone
„ FAX
„ Portable Equipment (POS, ECR, PDA etc.)
„ DSC
„ DVC
„ Car Audio
„ Home Electrical Appliance
„ Meter Equipment
Etc.
SSOP-B40
13.60mm x 7.80mm x 2.00mm
Typical Application Circuit
About resistor value:
Determine the optimal value
based on the applied current
With 25mA as max per 1 port
VLED=5.0
5.0V
3.3V
VLCD
VDD
LED1
LED2
LED3
LED4
BU97941FV-LB
SEG0 to SEG25
LCD
VSS
CSB SD SCL
COM0 to COM3
Signal input from controller
Figure 1. Typical application circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111ï½¥14ï½¥001
○This product has no designed protection against radioactive rays.
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TSZ02201-0P4P0D300500-1-2
26.Feb.2014 Rev.002