BU97941FV Datasheet, PDF (5/25 Pages) Rohm – Multifunction LCD Segment Driver

BU97941FV MAX 104 segments (SEG26×COM4)
●I/O equivalent circuit
VLCD
VDD
VSS
VSS
Datasheet
VDD
CSB, SD,
SCL,
CLKIN
VSS
VLCD
SEG0-25
COM0-3
VSS
LED1-4
VSS
●Example of recommended circuit
Figure 5. I/O equivalent circuit
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 6. Recommended circuit example
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TSZ02201-0A0A2D300080-1-2
1.Jun.2012 Rev.001