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BU97981KV-E2 Datasheet, PDF (15/50 Pages) Rohm – Multi-function LCD Segment Drivers | |||
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BU97981xxx Series MAX 196 segments (SEG49xCOM4)
Datasheet
Example of Recommended Circuit â Continued
(BU97981GU)
1. LED/GPO Using Case
LED ï¼ 3port
GPO ï¼ 5port
LCD ï¼ 164segments
VLED
5.0V 3.3V
VLCD
VDD
SEG48 (LED1)
SEG47 (LED2)
SEG46 (LED3)
BU97981GU
Regarding resistor value
Please detect the value according to
input current value. (current MAX =
20mA)
SEG45(GPO1)ï½
SEG41(GPO5)
Other
device
VSS1
VSS2
CSB SCL SD INHb CLKIN
SEG0ï½SEG40
COM0ï½COM3
LCD
CLKIN
Input signal from controller
External CLK input terminal
In case being unused, connect to VSS.
2. SEG Output Only Case
5.0V
3.3V
VLCD
VDD
BU97981GU
VSS1
VSS2
CSB SCL SD INHb CLKIN
SEG0ï½SEG48
COM0ï½COM3
LCD
ï¼CLKIN
External CLK input teminal
Input signal from controller In case being unused, connect to VSS.
Figure 14. BU97981GU E.g. of Recommended Circuit
www.rohm.com
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TSZ02201-0A2A0D300110-1-2
10.Apr.2015 Rev.006
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