BU9797FUV Datasheet, PDF (11/28 Pages) Rohm – Integrated Buffer AMP for LCD Driving

BU9797FUV MAX 144 segments (SEG36×COM4)
Datasheet
Detailed command description
D7 (MSB) is bit for command or data judgment.
Refer to Command and data transfer method.
C: 0: Next byte is RAM write data.
1: Next byte is command.
Set IC Operation (ICSET)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C
1
1
0
1 P2 P1 P0
P2: MSB data of DDRAM address. Please refer to “ADSET” command.
Set Software Reset condition.
Setup
P1
No operation
0
Software reset
1
When “Software Reset” is executed, this device is reset to initial condition. (Refer to Reset initialize condition)
Don’t set Software Reset (P1) with P2, P0 at the same time.
Switch between internal clock and external clock.
Setup
Internal clock
External clock input
P0 Initial condition
0
○
1
In Internal clock mode:
In external clock input mode::
OSCIN must be connect to VSS level.
Input external clock from OSCIN terminal..
Command
OSCIN_EN
（^{Internal signal}）
ICSET
Internal clock mode
Internal oscillation
（^{Internal signal}）
External clock
（^OSCIN ）
OSC MODE switch timing
External clock mode
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111ï½¥15ï½¥001
11/25
TSZ02201-0P4P0D300820-1-2
5.Aug.2014 Rev.001