AS3661 datasheet(57/87 Pages) AMSCO

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AS3661

Datasheet - D e t a i l e d D e s c r i p t i o n

8.10.16 TEMPERATURE WRITE

Note: When writing temperature data outside the range of the temperature compensation: Values greater than 89°C

will be set to 89°C; values less than -38°C will be set to -38°C.

8.10.17 LED TEST CONTROL

Table 51. TEMPERATURE WRITE Register

TEMPERATURE WRITE

Bit

Bit Name

Default

Access

Bit Description

7:0

TEMPERATURE

_WRITE

0000 0000

R/W

These bits are used for storing an 8-bit temperature reading

acquired from an external temperature sensor, if such a sensor

is used. Temperature reading is stored in 8-bit two's

complement format, see the table below.

1101 1010: -38°C

...

0001 1001: 25°C

...

0101 1000: 88°C

0101 1001: 89°C

Table 52. LED TEST CONTROL Register

LED TEST CONTROL

Bit

Bit Name

Default

Access

Bit Description

EN_LED_TEST

_ADC

R/W

Writing this bit high (1) fires single LED test conversation. Thus

each time you want to start a conversion it is necessary to

write a “1” to this register. The measurement cycle is 2.7

milliseconds per conversion.

0: LED test measurement disabled.

1: LED test measurement enabled

EN_LED_TEST_INT

R/W

This register enabled the interrupt for the LED test ADC.

Interrupt can be cleared by reading STATUS/INTERRUPT

0: no interrupt signal will be send to the INT pin when the

LED test is accomplished.

1: interrupt signal will be send to the INT pin when the LED test

is accomplished.

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