BU97931FV Datasheet, PDF (6/32 Pages) Rohm – Multifunction LCD Segment Driver

BU97931FV MAX 112 segments (SEG28×COM4)
●Example of recommended circuit
1) LED/GPO using case
VLED=5.0V
5.0V
3.3V
VLCD
LED
VDD
BU97931FV
*Regarding resistor value
Please detect the value sccoring to
input current value (current MAX = 20mA)
SEG27(GPO0 ) to
SEG23(GPO4)
Other
device
VSS
CSB SD SCL CLKIN
SEG0 to SEG22
COM0 to COM3
LCD
Input signal from controller
＊ CLKIN
External CLK input terminal
In case being unused, connect to VSS or be opened.
2) SEG output only case
VLCD
VDD
LED Open if unused
5.0V
3.3V
BU97931FV
VSS
CSB SD SCL CLKIN
SEG0 to SEG27
COM0 to COM3
LCD
Input signal from controller
＊ CLKIN
External CLK input terminal
In case being unused, connect to VSS or be opened.
Figure 6. BU97931FV E.g. of recommended circuit
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TSZ02201-0A0A2D300070-1-2
10.Apr.2015 Rev.004