MAX7315 Maxim, MAX7315 Datasheet - Page 19

• Manufacturer Part Number: MAX7315
• Description: The MAX7315 I²C-/SMBus™-compatible serial interfaced peripheral provides microprocessors with 8 I/O ports
• Manufacturer: Maxim

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