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MAX44004 Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX44004 Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 17 page 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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