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MAX7370 Datasheet(PDF) 32 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) 32 Page - Maxim Integrated Products

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���������������������������������������������������������������� Maxim Integrated Products 32
MAX7370
8 x 8 Key-Switch Controller and LED Driver/GPIOs
with I2C Interface and High Level of ESD Protection
Table 29. COL4–COL7 Individual PWM Ratio Registers (0x50 to 0x53)
Table 30. COL4–COL7 LED Configuration Registers (0x54 to 0x57)
REGISTER DESCRIPTION
REGISTER DATA
D7
D6
D5
D4
D3
D2
D1
D0
PORT PWM
Power-up default setting
PORT PWM ratio is 0/256
0
0
0
0
0
0
0
0
PORT PWM ratio is 1/256
0
0
0
0
0
0
0
1
PORT PWM ratio is 2/256
0
0
0
0
0
0
1
0
PORT PWM ratio is 3/256
0
0
0
0
0
0
1
1
⋮
PORT PWM ratio is 252/256
1
1
1
1
1
1
0
0
PORT PWM ratio is 253/256
1
1
1
1
1
1
0
1
PORT PWM ratio is 254/256
1
1
1
1
1
1
1
0
PORT PWM ratio is 256/256 (100% duty cycle)
1
1
1
1
1
1
1
1
REGISTER BIT
DESCRIPTION
VALUE
FUNCTION
DEFAULT VALUE
D[7:6]
Don’t care
00
—
00
D5
Common PWM
0
Port uses individual PWM intensity register to set
the PWM ratio
0
1
Port uses common PWM intensity register to set
the PWM ratio
D[4:2]
Blink period
000
Port does not blink
000
001
Port blink period is 256ms
010
Port blink period is 512ms
011
Port blink period is 1024ms
100
Port blink period is 2048ms
101
Port blink period is 4096ms
110/111
Undefined
D[1:0]
Blink-on time
00
LED is on for 50% of the blink period
00
01
LED is on for 25% of the blink period
10
LED is on for 12.5% of the blink period
11
LED is on for 6.25% of the blink period



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