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AS7341

Functional Description

Datasheet

• PUBLIC

DS000504

• v3-00 • 2020-Jun-25

│ 20

8.5

Integration Mode

The device features three modes to perform a spectral measurement. The integration mode

(INT_MODE) can be configured in register 0x70 (CONFIG). For auto zero configuration refer to

Figure 23:

Integration Mode Description

Mode

Description

Synchronization

Integration Time

Registers

SPM (spectral

measurement,

no sync)

INT_MODE = 0x0

Default setting:

Integration is started with bit SP_EN

= “1”. Integration Time is set by

ATIME [7:0]

ASTEP [15:0]

SP_EN

= “1”

INT_MODE = 0x0

ATIME [7:0]

ASTEP [15:0]

WTIME [7:0]

SYNS (spectral

measurement,

start sync)

INT_MODE = 0x1

Integration with external start:

Integration is started with

rising/falling edge on pin GPIO.

Integration Time is set by register

ATIME and ASTEP.

Yes (start)

ATIME [7:0]

ASTEP [15:0]

SP_EN

= “1”

INT_MODE = 0x1

ATIME [7:0]

ASTEP [15:0]

WTIME [7:0]

SYND (spectral

measurement,

start/stop sync)

INT_MODE = 0x3

Integration with external start and

stop:

Integration is controlled via

rising/falling edge on pin GPIO and

edges on pin GPIO is reached,

integration time is stopped. Actual

integration time can be read out in

Yes (start/stop)

Rising/falling edge

on pin GPIO and

SP_EN

= “1”

INT_MODE = 0x3

EDGE[7:0]

ITIME[23:0]

Figure 24 :

SPM Mode

STATE IDLE

AUTO

ZERO

INTEGRATION

Start

I2C write enable register

ATIME x ASTEP

RES-

ULT

WAIT

WTIME

auto re-start

INTEGRATION

RES-

ULT

I2C read data registers

INT

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