BU97540KV-M Datasheet, PDF (17/70 Pages) Rohm – Multi-function Segment Drivers

BU97540KV-M
Control Data Functions
1.KM0, KM1 and KM2 : Key Scan output port/Segment output port switching control data
These control data bits switch the functions of the KS1/S53 to KS6/S58 output pins between key scan output and segment
output.
KM0 KM1 KM2 _{KS1/S53 KS2/S54}
Output Pin State
KS3/S55 KS4/S56
KS5/S57
KS6/S58
Maximum Number
of Input keys
0
0
0
KS1
KS2
KS3
KS4
KS5
KS6
30
0
0
1
S53
KS2
KS3
KS4
KS5
KS6
25
0
1
0
S53
S54
KS3
KS4
KS5
KS6
20
0
1
1
S53
S54
S55
KS4
KS5
KS6
15
1
0
0
S53
S54
S55
S56
KS5
KS6
10
1
0
1
S53
S54
S55
S56
S57
KS6
5
1
1
0
S53
S54
S55
S56
S57
S58
0
1
1
1
S53
S54
S55
S56
S57
S58
0
In Slave Mode, it is automatically set to all segment output and cannot be controlled by Serial Interface.
2. P0, P1, P2, and P3: Segment / PWM / General Purpose output port switching control data
These control bits are used to select the function of the S1/P1/G1 to S9/P9/G9 output pins (Segment Output Pins or PWM
Output Pins or General Purpose Output Pins).
P0 P1 P2 P3 S1/P1/G1 S2/P2/G2 S3/P3/G3 S4/P4/G4 S5/P5/G5 S6/P6/G6
0000
S1
S2
S3
S4
S5
S6
0 0 0 1 P1/G1
S2
S3
S4
S5
S6
0 0 1 0 P1/G1 P2/G2
S3
S4
S5
S6
0 0 1 1 P1/G1 P2/G2 P3/G3
S4
S5
S6
0 1 0 0 P1/G1 P2/G2 P3/G3 P4/G4
S5
S6
0 1 0 1 P1/G1 P2/G2 P3/G3 P4/G4 P5/G5
S6
0 1 1 0 P1/G1 P2/G2 P3/G3 P4/G4 P5/G5 P6/G6
0 1 1 1 P1/G1 P2/G2 P3/G3 P4/G4 P5/G5 P6/G6
1 0 0 0 P1/G1 P2/G2 P3/G3 P4/G4 P5/G5 P6/G6
1 0 0 1 P1/G1 P2/G2 P3/G3 P4/G4 P5/G5 P6/G6
1010
S1
S2
S3
S4
S5
S6
1011
S1
S2
S3
S4
S5
S6
1100
S1
S2
S3
S4
S5
S6
1101
S1
S2
S3
S4
S5
S6
1110
S1
S2
S3
S4
S5
S6
1111
S1
S2
S3
S4
S5
S6
PWM output or General Purpose output is selected by PGx(x=1 to 9) control data bit.
S7/P7/G7
S7
S7
S7
S7
S7
S7
S7
P7/G7
P7/G7
P7/G7
S7
S7
S7
S7
S7
S7
S8/P8/G8
S8
S8
S8
S8
S8
S8
S8
S8
P8/G8
P8/G8
S8
S8
S8
S8
S8
S8
S9/P9/G9
S9
S9
S9
S9
S9
S9
S9
S9
S9
P9/S9
S9
S9
S9
S9
S9
S9
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.
Corresponding Display Data
Output Pins
1/5 Duty mode 1/4 Duty mode 1/3 Duty mode
1/1 Duty
(static) mode
S1/P1/G1
D1
D1
D1
D1
S2/P2/G2
D6
D5
D4
D2
S3/P3/G3
D11
D9
D7
D3
S4/P4/G4
D16
D13
D10
D4
S5/P5/G5
D21
D17
D13
D4
S6/P6/G6
D26
D21
D16
D5
S7/P7/G7
D31
D25
D19
D7
S8/P8/G8
D36
D29
D22
D8
S9/P9/G9
D41
D33
D25
D9
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, at 1/4 Duty mode, S4/P4/G4 is used as a General Purpose Output Port, 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. FL: Line Inversion or Frame Inversion switching control data
This control data bit selects either line inversion mode or frame inversion mode.
FL
Inversion mode
0
Line Inversion
1
Frame Inversion
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
17/66
TSZ02201-0P4P0D300970-1-2
29.Jun.2015 Rev.002