MAX7360 Maxim, MAX7360 Datasheet - Page 24

• 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

I
Driver/GPIOs with Integrated ESD Protection
Table 13. Autosleep Register Format (0x06)
Table 14. GPIO Global Configuration Register (0x40)
24
No Autosleep
Autosleep for (ms)
8192
4096
2048
1024
512
256
256
Power-up default settings
REGISTER
2
D[2:0]
C-Interfaced Key-Switch Controller and LED
_____________________________________________________________________________________
BIT
D7
D6
D5
D4
D3
AUTOSLEEP REGISTER
Fade in/out time
interrupt enable
DESCRIPTION
PORT6/PORT7
GPIO enable
rotary switch
GPIO reset
I
REGISTER
Reserved
2
C timeout
VALUE
XXX
000
0
1
0
0
1
0
1
0
1
PORT6/PORT7 operate as GPIOs
PORT6/PORT7 operate as a rotary switch input
—
Disabled
INTI is asserted when I
read is performed on the I
PWM, constant-current circuits, and GPIs are shut down. GPO
values depend on their setting. Register 0x41 to 0x5F values are
stored and cannot be changed. The entire part is shut down if the
key switches are in sleep mode (D7 of register 0x01).
Normal GPIO operation. PWM, constant-current circuits, and GPIOs
are enabled regardless of key-switch sleep mode state (see Table 8).
Normal operation
Return all GPIO registers (registers 0x40 to 0x5F) to their POR
value. This bit is momentary and resets itself to 0 after the write
cycle.
No fading
PWM intensity ramps up (down) between the common PWM value
and 0% duty cycle in 16 steps over the following time period:
D[2:0] = 001 = 256ms
D[2:0] = 010 = 512ms
D[2:0] = 011 = 1024ms
D[2:0] = 100 = 2048ms
D[2:0] = 101 = 4096ms
D[2:0] = 110/111 = Undefined
D7
0
0
0
0
0
0
0
0
0
D6
RESERVED
0
0
0
0
0
0
0
0
0
2
C bus times out. INTI is deasserted when a
D5
0
0
0
0
0
0
0
0
0
2
C timeout flag register (0x48).
FUNCTION
REGISTER DATA
D4
0
0
0
0
0
0
0
0
0
D3
0
0
0
0
0
0
0
0
0
AUTOSHUTDOWN TIME
D2
0
0
0
0
1
1
1
1
1
D1
0
0
1
1
0
0
1
1
1
DEFAULT
VALUE
000
0
0
0
0
0
D0
0
1
0
1
0
1
0
1
1