MAX44000 데이터 시트보기 (PDF) - Maxim Integrated

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MAX44000

Ambient and Infrared Proximity Sensor

Maxim Integrated 

MAX44000

Ambient and Infrared Proximity Sensor

BIT 1

0

1

Proximity Interrupt Enable (PRXINTE)

OPERATION

The PRXINTS bit remains unasserted, and proximity channel readings are not compared with interrupt thresholds.

Detection of a proximity interrupt event triggers a hardware interrupt (INT pin is pulled low) and sets the PRXINTS

bit (register 0x00, B1). Proximity channel readings are compared with proximity interrupt threshold settings and

proximity persist timer.

BIT 0

0

1

Ambient Interrupt Enable (ALSINTE)

OPERATION

The ALSINTS bit remains unasserted, and ALS channel readings are not compared with interrupt thresholds.

Detection of an ambient light interrupt event triggers a hardware interrupt (INT pin is pulled low) and sets the

ALSINTS bit (register 0x00, B0). ALS channel readings are compared with ALS interrupt threshold settings and

ALS persist timer.

Receive Configuration Register (0x02)

REGISTER

B7

B6

B5

B4

B3

B2

B1

B0

REGISTER

ADDRESS

POWER-ON

RESET

STATE

R/W

Receive Configuration

1

1

1

1

ALSTIM[1:0] ALSPGA[1:0]

0x02

0x00

R/W

This register sets the ADC integration time and front-end photodiode circuitry sensitivity (gain) for the ALS channel.

The ADC integration time also controls the bit resolution of measurements. ADC conversions are made of MSB first

(the IC needs longer conversion times for higher resolution measurements). Use of lower PGA gains helps expand the

full-scale range of the ADC at the expense of per-LSB sensitivity.

12

Maxim Integrated

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