AS7263 datasheet(16/45 Pages) AMSCO

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AS7263 − Detailed Description

Temperature Sensor

The Temperature Sensor is constantly measuring the on-chip

temperature and enables temperature compensation proce-

dures.

Reset

Pulling down the RESN pin for longer than 100ms resets the

AS7263.

Figure 17:

Reset Circuit

Indicator LED

The LED, connected to pin LED_IND, can be used to indicate

programming progress of the device.

While programming the AS7263 via the external SD card the

indicator LED starts flashing (500ms pulses). When program-

ming is completed the indicator LED is switched off. The LED

(LED0) can be turned ON/OFF via AT commands or via I²C reg-

ister control. The LED sink current is programmable from 1mA,

2mA, 4mA and 8mA.

Electronic Shutter with LED_DRV Driver Control

There are two LED driver outputs that can be used to control

up to 2 LEDs. This will allow different wavelength light sources

to be used in the same system. The LED output sink currents are

programmable and can drive external LED sources: LED_IND

from 1mA, 2mA, 4mA and 8mA and LED_DRV from 12.5mA,

25mA, 50mA and 100mA. The sources can be turned off and on

via I²C registers control or AT commands and provides the de-

vice with an electronic shutter.

Reset

AS7263

CLE

RESN

Push > 100ms

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