BU97941FV_15 Datasheet, PDF (5/27 Pages) Rohm – Multifunction LCD Segment Driver

BU97941FV MAX 104 segments (SEG26×COM4)
●I/O equivalent circuit
VLCD
VDD
VSS
VDD
CSB, SD,
SCL,CLKIN
VSS
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
BU97941FV
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
10.Apr.2015 Rev.004