BU97930MUV_15 Datasheet, PDF (14/32 Pages) Rohm – Multifunction LCD Segment Driver

BU97930MUV MAX 108 segments (SEG27×COM4)
○SEG/GPO port change (OUTSET)
MSB
LSB
D/C D6 D5 D4 D3 D2 D1 D0 Hex
1st byte Command
1
0
0
0
1
0
0
0 88h
2nd byte Command
0
0
0
0
0 P2 P1 *
-
Reset
-
00h
Set output mode, Segment output or GPO output.
P2 to P0: Select changing port number. (SEG23 to SEG26 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 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
1
0
0
1
1
1
0
0
1
0
1
1
1
*
SEG Terminal state (SEG output/GPO output)
SEG23 port SEG24 port SEG25 port SEG26 port
SEG23
SEG24
SEG25
SEG26
SEG23
SEG24
SEG25
GPO1
SEG23
SEG24
GPO2
GPO1
SEG23
GPO3
GPO2
GPO1
GPO4
GPO3
GPO2
GPO1
(OUTSET command will be canceled)
In case SEG port is switched to the GPO port, DDRAM address and Blink RAM address do not change.
In this case DDRAM address and Blink RAM address, selected GPO output mode is dummy address.
The output state of GPO and LED port under the INHb H/L, display on/off, and RESET state are listed below.
Control port
GPO
LED
INHb
H
L
According to
GPOSET
command
Low Fix
According to
PWMSET
Hi-Z
command
DISPLAY
ON
OFF
According to
GPOSET
command
According to
GPOSET
command
According to
PWMSET
command
According to
PWMSET
command
RESET state
GPO unselected
(All SEG output)
LED unselected
(All SEG output)
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TSZ02201-0A0A2D300060-1-2
10.Apr.2015 Rev.004