MAX7315 Ver la hoja de datos (PDF) - Maxim Integrated
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componentes Descripción
Fabricante
MAX7315
Maxim Integrated
MAX7315 Datasheet PDF : 26 Pages
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8-Port I/O Expander with LED Intensity
Control, Interrupt, and Hot-Insertion Protection
MASTER INTENSITY TIMESLOT
NEXT MASTER INTENSITY TIMESLOT
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
Figure 15. Individual (or Global) Set to 1/16
MASTER INTENSITY TIMESLOT
NEXT MASTER INTENSITY TIMESLOT
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
Figure 16. Individual (or Global) Set to 15/16
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
Figure 17. Individual (or Global) Set to 16/16
Table 11. PWM Intensity Settings (Blink Disabled)
OUTPUT
(OR
GLOBAL)
INTENSITY
SETTING
PWM DUTY CYCLE
OUTPUT BLINK PHASE 0
REGISTER BIT = 0
LOW TIME HIGH TIME
0x0
1/16
15/16
0x1
2/16
14/16
0x2
3/16
13/16
0x3
4/16
12/16
0x4
5/16
11/16
0x5
6/16
10/16
0x6
7/16
9/16
0x7
8/16
8/16
0x8
9/16
7/16
0x9
10/16
6/16
0xA
11/16
5/16
0xB
12/16
4/16
0xC
13/16
3/16
0xD
14/16
2/16
0xE
15/16
1/16
0xF
Static low Static low
LED BEHAVIOR WHEN
OUTPUT BLINK PHASE 0
REGISTER BIT = 0
(LED IS ON WHEN
OUTPUT IS LOW)
Lowest PWM intensity
Highest PWM intensity
Full intensity, no PWM
(LED on continuously)
PWM DUTY CYCLE
OUTPUT BLINK PHASE 0
REGISTER BIT = 1
LOW TIME
15/16
14/16
13/16
12/16
11/16
10/16
9/16
8/16
7/16
6/16
5/16
4/16
3/16
2/16
1/16
Static high
impedance
HIGH TIME
1/16
2/16
3/16
4/16
5/16
6/16
7/16
8/16
9/16
10/16
11/16
12/16
13/16
14/16
15/16
Static high
impedance
LED BEHAVIOR WHEN
OUTPUT BLINK PHASE 0
REGISTER BIT = 1
(LED IS ON WHEN
OUTPUT IS LOW)
Highest PWM intensity
Lowest PWM intensity
LED off continuously
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