Table 11. pwm intensity settings (blink disabled) – Rainbow Electronics MAX7315 User Manual
Page 19
MAX7315
8-Port I/O Expander with LED Intensity
Control and Interrupt
______________________________________________________________________________________
19
Figure 16. Individual (or Global) Set to 15/16
MASTER INTENSITY TIMESLOT
1 2 3 4 5 6 7 8 9
10
11
12 13 14
15 16
NEXT MASTER INTENSITY TIMESLOT
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
Figure 15. Individual (or Global) Set to 1/16
MASTER INTENSITY TIMESLOT
1 2 3 4 5 6 7 8 9
10
11
12 13 14
15 16
NEXT MASTER INTENSITY TIMESLOT
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
Figure 17. Individual (or Global) Set to 16/16
MASTER INTENSITY TIMESLOT CONTROL IS IGNORED
1 2 3 4 5 6 7 8 9
10
11
12 13 14
15 16 1 2 3 4 5 6 7 8 9
10
11 12
13 14
15
16
Table 11. PWM Intensity Settings (Blink Disabled)
PWM DUTY CYCLE
OUTPUT BLINK PHASE 0
REGISTER BIT = 0
PWM DUTY CYCLE
OUTPUT BLINK PHASE 0
REGISTER BIT = 1
OUTPUT
(OR
GLOBAL)
INTENSITY
SETTING
LOW TIME
HIGH TIME
LED BEHAVIOR WHEN
OUTPUT BLINK PHASE 0
REGISTER BIT = 0
(LED IS ON WHEN
OUTPUT IS LOW)
LOW TIME
HIGH TIME
LED BEHAVIOR WHEN
OUTPUT BLINK PHASE 0
REGISTER BIT = 1
(LED IS ON WHEN
OUTPUT IS LOW)
0x0
1/16
15/16
Lowest PWM intensity
15/16
1/16
Highest PWM intensity
0x1
2/16
14/16
14/16
2/16
0x2
3/16
13/16
13/16
3/16
0x3
4/16
12/16
12/16
4/16
0x4
5/16
11/16
11/16
5/16
0x5
6/16
10/16
10/16
6/16
0x6
7/16
9/16
9/16
7/16
0x7
8/16
8/16
8/16
8/16
0x8
9/16
7/16
7/16
9/16
0x9
10/16
6/16
6/16
10/16
0xA
11/16
5/16
5/16
11/16
0xB
12/16
4/16
4/16
12/16
0xC
13/16
3/16
3/16
13/16
0xD
14/16
2/16
Increasing PWM intensity
2/16
14/16
Increasing PWM intensity
0xE
15/16
1/16
Highest PWM intensity
1/16
15/16
Lowest PWM intensity
0xF
Static low
Static low
Full intensity, no PWM
(LED on continuously)
Static high
impedance
Static high
impedance
LED off continuously