BU97941FV Datasheet, PDF (8/25 Pages) Rohm – Multifunction LCD Segment Driver

BU97941FV MAX 104 segments (SEG26×COM4)
Datasheet
○LCD Driver Bias / Duty Circuit
Voltage is generated for LCD drive.
Buffer amplifier is integrated low power consumption is possible.
＊Line, frame inversion can be set via MODESET command.
＊1/4, 1/3, static duty can be set via DISCTL command.
For each liquid crystal drive waveform, see ”Liquid crystal Drive Waveform”.
○Reset Initial State
The Reset Initial State after executing Software Reset is as follows:
・ Display is turned OFF.
・ Each command register enters Reset state.
・ DDRAM address is initialized.
(DDRAM data is not initialized. Therefore, it is recommended to write initial values to all DDRAM before Display on.）
●Command / Function Table
Function Description Table
NO Command
1 Mode Set (MODESET)
2 Display control (DISCTL)
3 Address set (ADSET)
4 LED control (LEDCTL)
5 RAM WRITE (RAMWR)
6 All Pixel ON (APON)
7 All Pixel OFF (APOFF)
8 All Pixel On/Off mode off (NORON)
9 Software Reset (SWRST)
Function
Liquid crystal Drive setting
LCD setting1
LCD setting2
LED board ON/OFF setting
RAM Write Start setting
All display ON
All display OFF
Normal display APON/APOFF setting release）
Software reset
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TSZ02201-0A0A2D300080-1-2
1.Jun.2012 Rev.001