SM8133B
Mode data “5H”: LED ON register
Setting data
High
Low
D1
A group ON
A group OFF
D2
B group ON
B group OFF
D3
DIN7 ON
DIN7 OFF
D4
LDO ON
LDO OFF
This register controls the A group, B group, DIN7, and LDO ON/OFF state. Each state is ON when the corre-
sponding bit is HIGH, and OFF when LOW. Each circuit starts when the corresponding bit in address 5H is set
HIGH, transferring from standby mode. It is recommended that these 4 data settings be held LOW when possi-
ble to control current consumption.
Mode data “6H”: System register
Setting data
High
Low
D1
A group maximum
current = 15mA
A group maximum
current = 30mA
D2
B group maximum
current = 15mA
B group maximum
current = 30mA
D3
DIN7 maximum
current = 75mA
DIN7 maximum
current = 150mA
D4
−
−
Note. Target values only. Current rating accuracy is not guaranteed.
This register sets the maximum current drive for each group. For A and B group, LOW sets 30mA as the maxi-
mum, HIGH sets 15mA. For DIN7, LOW sets 150mA, HIGH sets 75mA as the maximum.
LED drive current (Hexadecimal)
A group
Dimming
register value
0H
1H
2H
3H
4H
5H
6H
7H
8H
9H
AH
BH
CH
DH
EH
FH
A group max.
current = 0
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
A group max.
current = 1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
B group
B group max.
current = 0
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
B group max.
current = 1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
DIN7 max.
current = 0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
DIN7
DIN7 max.
current = 1
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
Unit
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Note. “H”: Hexadecimal
Note. Target values only. Current rating accuracy is not guaranteed.
NIPPON PRECISION CIRCUITS INC.—13
NPC [ NIPPON PRECISION CIRCUITS INC ]
