BU97520AKV-M Datasheet, PDF (11/44 Pages) Rohm – AEC-Q100 Qualified

BU97520AKV-M
Datasheet
Control Data Functions
17. KM0 to KM2: Key Scan output port/Segment output port control data
These control data bits switch the functions of the KS1/S56 to KS6/S61 output pins between key scan output and segment
output.
KM0
0
0
0
0
1
1
1
1
KM1
0
0
1
1
0
0
1
1
KM2
0
1
0
1
0
1
0
1
KS1/S56
KS1
S56
S56
S56
S56
S56
S56
S56
KS2/S57
KS2
KS2
S57
S57
S57
S57
S57
S57
Output Pin State
KS3/S58 KS4/S59
KS3
KS4
KS3
KS4
KS3
KS4
S58
KS4
S58
S59
S58
S59
S58
S59
S58
S59
KS5/S60
KS5
KS5
KS5
KS5
KS5
S60
S60
S60
KS6/S61
KS6
KS6
KS6
KS6
KS6
KS6
S61
S61
Maximum Number
of Input keys
30
25
20
15
10
5
0
0
2. P0 to P2: Segment / PWM / General Purpose output port control data
These control bits are used to select the function of the S1/P1 to S6/P6 output pins (Segment Output Pins or PWM Output
Pins or General Purpose Output Pins).
P0
P1
P2 S1/P1/G1 S2/P2/G2 S3/P3/G3 S4/P4/G4 S5/P5/G5 S6/P6/G6
0
0
0
S1
S2
S3
S4
S5
S6
0
0
1
P1/G1
S2
S3
S4
S5
S6
0
1
0
P1/G1
P2/G2
S3
S4
S5
S6
0
1
1
P1/G1
P2/G2
P3/G3
S4
S5
S6
1
0
0
P1/G1
P2/G2
P3/G3
P4/G4
S5
S6
1
0
1
P1/G1
P2/G2
P3/G3
P4/G4
P5/G5
S6
1
1
0
P1/G1
P2/G2
P3/G3
P4/G4
P5/G5
P6/G6
1
1
1
S1
S2
S3
S4
S5
S6
PWM output or General Purpose output is selected by PGx (x=1 to 6) control data bit.
When the General Purpose Output Port Function is selected, the correspondence between the output pins and the
respective display data is given in the table below.
Output Pins
Corresponding Display Data
1/4-Duty mode
1/3-Duty mode
S1/P1/G1
D1
D1
S2/P2/G2
D5
D4
S3/P3/G3
D9
D7
S4/P4/G4
D13
D10
S5/P5/G5
D17
D13
S6/P6/G6
D21
D16
When the General Purpose Output Port Function is selected, the respective output pin outputs a “HIGH” level when its
corresponding display data is set to “1”. Likewise, it will output a “LOW” level, if its corresponding display data is set to “0”.
For example, S4/P4/G4 is used as a General Purpose Output Port in case of 1/4-Duty, if its corresponding display data – D13
is set to “1”, then S4/P4/G4 will output “HIGH” level. Likewise, if D13 is set to “0”, then S4/P4/G4 will output “LOW” level.
3. DR: 1/3-Bias drive or 1/2-Bias drive control data
This control data bit selects either 1/3-Bias drive or 1/2-Bias drive.
DR
Bias Drive Scheme
0
1/3-Bias drive
1
1/2-Bias drive
4. FL: Line Inversion or Frame Inversion control data
This control data but selects either Line Inversion or Frame Inversion.
FL
Inversion Setting
0
Line
1
Frame
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19.Mar.2015 Rev.006