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MAX7370 Datasheet(PDF) 31 Page - Maxim Integrated Products

Part # MAX7370
Description  8 x 8 Key-Switch Controller and LED Driver/GPIOs
PDF  37 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX7370 Datasheet(HTML) 31 Page - Maxim Integrated Products

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���������������������������������������������������������������� Maxim Integrated Products 31
MAX7370
8 x 8 Key-Switch Controller and LED Driver/GPIOs
with I2C Interface and High Level of ESD Protection
Table 26. LED Constant-Current Setting Register (0x43)
Table 27. Common PWM Register (0x45)
Table 28. I2C Timeout Flag Register (0x48) (Read Only)
REGISTER BIT
DESCRIPTION
VALUE
FUNCTION
DEFAULT VALUE
D[7:6]
Reserved
11
Set always as 11
11
D[5:1]
Reserved
00000
—
00000
D0
Constant-current
setting
0
Constant current is 20mA
0
1
Constant current is 10mA
REGISTER DESCRIPTION
REGISTER DATA
D7
D6
D5
D4
D3
D2
D1
D0
COMMON PWM
Power-up default setting
Common PWM ratio is 0/256
0
0
0
0
0
0
0
0
Common PWM ratio is 1/256
0
0
0
0
0
0
0
1
Common PWM ratio is 2/256
0
0
0
0
0
0
1
0
Common PWM ratio is 3/256
0
0
0
0
0
0
1
1
⋮
Common PWM ratio is 252/256
1
1
1
1
1
1
0
0
Common PWM ratio is 253/256
1
1
1
1
1
1
0
1
Common PWM ratio is 254/256
1
1
1
1
1
1
1
0
Common PWM ratio is 256/256 (100% duty cycle)
1
1
1
1
1
1
1
1
REGISTER BIT
DESCRIPTION
VALUE
FUNCTION
DEFAULT VALUE
D[7:1]
Reserved
0000000
—
0000000
D0
I2C timeout flag
0
No I2C timeout has occurred since last read or
POR.
0
1
I2C timeout has occurred since last read or POR.
This bit is reset to zero when a read is performed
on this register. I2C timeouts must be enabled for
this function to work (see Table 8).



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