BU97931FV Datasheet, PDF (14/32 Pages) Rohm – Multifunction LCD Segment Driver

BU97931FV MAX 112 segments (SEG28×COM4)
○SEG/GPO port change (OUTSET)
MSB
LSB
D/C D6 D5 D4 D3 D2 D1 D0 Hex Reset
1st byte Command
1
0
0
0
1
0
0
0 88h
-
2nd byte Command
0
0
0
0
0 P2 P1 P0
-
00h
Set output mode, Segment output or GPO output.
P2 to P0: Select changing port number. (SEG23 to SEG27 ports are SEG mode/GPO mode selectable)
In case GPO output is selected, terminal output data is set by GPOSET command.
Ex) In case SEG 26 port is assigned to GPO,
If GPO1 data is "H", GPO1 (SEG26) port outputs "H" (VLCD Level).
If GPO1 data is "L", GPO1 (SEG26) port outputs "L" (VSS level).
Output terminal state under the P2 to P0 set condition is listed below.
Output Terminal state
Condition
P2 P1 P0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
*
SEG23 port
SEG23
SEG23
SEG23
SEG23
SEG23
GPO4
SEG Terminal state (SEG output/GPO output)
SEG24 port SEG25 port SEG26 port
SEG24
SEG25
SEG26
SEG24
SEG25
SEG26
SEG24
SEG25
GPO1
SEG24
GPO2
GPO1
GPO3
GPO2
GPO1
GPO3
GPO2
GPO1
(OUTSET command will be canceled)
SEG27 port
SEG27
GPO0
GPO0
GPO0
GPO0
GPO0
In case the SEG port is switched to the GPO port, DDRAM address and Blink RAM address do not change.
In case DDRAM address and Blink RAM address, selected GPO output mode is dummy address.
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10.Apr.2015 Rev.004