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

BU97931FV-LB MAX 112 segments (SEG28×COM4)
Example of recommended circuit
(1) LED/GPO using case
VLED=5.0V
Datasheet
5.0V
3.3V
VLCD
LED
VDD
BU97931FV-LB
*Regarding resistor value
Please detect the value according to
input current value (current MAX = 20mA)
SEG27(GPO0) to
SEG23(GPO4)
Other
device
VSS
CSB SD SCL
CLKIN
SEG0 toSEG22
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
5.0V 3.3V
VLCD
LED
VDD
BU97931FV-LB
In case being unused, OPEN
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-LB E.g. of recommended circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111ï½¥15ï½¥001
6/29
TSZ02201-0P4P0D300490-1-2
26.Feb.2014 Rev.002