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MAX44004 Datasheet(PDF) 7 Page - Maxim Integrated Products

Part # MAX44004
Description  Digital Ambient Light Sensor
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX44004 Datasheet(HTML) 7 Page - Maxim Integrated Products

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7
MAX44004
Digital Ambient Light Sensor
Register Description
Table 1 is the register description.
The individual register bits are explained in Table 2.
Default power-up bit states are highlighted in bold.
Interrupt Status 0x00
The PWRON bit in the Status register 0x00, if set,
indicates that a power-on-reset (POR) condition has
occurred, and any user-programmed thresholds may not
be valid anymore. The ALSINTS bit in the Status register
0x00 indicates that an ambient-light-interrupt condition
has occurred. If any of these bits are set to 1, the INT pin
is pulled low and is asserted. See Table 2.
Reading the Interrupt Status register clears the PWRON
and ALSINTS bits if set, AND deasserts the INT pin
(i.e., INT is pulled high by the off-chip pullup resistor).
The ALSINTS bit is disabled and set to 0 if the ALSINTE
interrupt enable bit in Register 0x01 is set to 0.
Table 1. Component List
Table 2. Interrupt Status
REGISTER
BIT7
BIT6
BIT5
BIT4
BIT3
BIT2
BIT1
BIT0
REGISTER
ADDRESS
POWER-
ON RESET
STATE
R/W
STATUS
Interrupt Status
PWRON
ALSINTS
0x00
0x04
R
CONFIGURATION
Main Configuration
TRIM
MODE[1:0]
ALSINTE
0x01
0x24
R/W
Receiver
Configuration
ALSTIM[1:0]
ALSPGA[1:0]
0x02
0x00
R/W
ADC DATA
ADC High Byte—ALS
OFL
ALSDATA[13:8]
0x04
0x00
R
ADC Low Byte—ALS
ALSDATA[7:0]
0x05
0x00
R
THRESHOLD SET
ALS Upper
Threshold—High Byte
UPTHR [13:8]
0x06
0x00
R/W
ALS Upper
Threshold—Low Byte
UPTHR[7:0]
0x07
0x00
R/W
ALS Lower
Threshold—High Byte
LOTHR[13:8]
0x08
0x00
R/W
ALS Lower
Threshold—Low Byte
LOTHR [7:0]
0x09
0x00
R/W
Threshold Persist
Timer
ALSPST[1:0]
0x0A
0x00
R/W
Digital Gain Trim of
Green Channel
TRIM _GAIN_GREEN [6:0]
TRIM_GAIN_IR
[0]
0x0F
0x80
R/TW
Digital Gain Trim of
Infrared Channel
TRIM _GAIN_IR [8:1]
0x10
0x80
R/TW
REGISTER
BIT7
BIT6
BIT5
BIT4
BIT3
BIT2
BIT1
BIT0
REGISTER
ADDRESS
POWER-
ON RESET
STATE
R/W
Interrupt Status
PWRON
ALSINTS
0x00
0x04
R


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