MAX7360 Maxim, MAX7360 Datasheet - Page 29

• Manufacturer Part Number: MAX7360
• Description: The MAX7360 I²C-interfaced peripheral provides microprocessors with management of up to 64 key switches, with an additional eight LED drivers/GPIOs that feature constant-current, PWM intensity control, and rotary switch control options
• Manufacturer: Maxim

Table 24. PORT0–PORT7 Individual PWM Ratio Registers (0x50 to 0x57)
Table 25. PORT0–PORT7 Configuration Registers (0x58 to 0x5F)
Power-up default setting (port PWM ratio is
0/256)
PORT PWM ratio is 1/256
PORT PWM ratio is 2/256
PORT PWM ratio is 3/256
PORT PWM ratio is 252/256
PORT PWM ratio is 253/256
PORT PWM ratio is 254/256
PORT PWM ratio is 256/256 (100% duty cycle)
REGISTER
D[4:2]
D[1:0]
I
BIT
D7
D6
D5
2
Driver/GPIOs with Integrated ESD Protection
C-Interfaced Key-Switch Controller and LED
REGISTER DESCRIPTION
DESCRIPTION
Common PWM
Interrupt mask
Blink-on time
Blink period
Edge/level
______________________________________________________________________________________
detect
110/111
VALUE
000
001
010
011
100
101
00
01
10
11
0
1
0
1
0
1
Interrupt is not masked
Interrupt is masked. PORT7 interrupt mask is ignored when the
device is configured for rotary switch input.
Rising edge-triggered
interrupts
Rising or falling edge-
triggered interrupts
Port uses individual PWM intensity register to set the PWM ratio
Port uses common PWM intensity register to set the PWM ratio
Port does not blink
Port blink period is 256ms
Port blink period is 512ms
Port blink period is 1024ms
Port blink period is 2048ms
Port blink period is 4096ms
Undefined
LED is on for 50% of the blink period
LED is on for 25% of the blink period
LED is on for 12.5% of the blink period
LED is on for 6.25% of the blink period
D7
0
0
0
0
1
1
1
1
D6
0
0
0
0
1
1
1
1
.
.
.
D5
0
0
0
0
1
1
1
1
Interrupts only occur when the GPIO port
is configured as an input
FUNCTION
REGISTER DATA
D4
PORT PWM
0
0
0
0
1
1
1
1
D3
0
0
0
0
1
1
1
1
D2
0
0
0
0
1
1
1
1
D1
0
0
1
1
0
0
1
1
DEFAULT
VALUE
000
00
0
0
0
D0
0
1
0
1
0
1
0
1
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