ams Datasheet

Page 17

[v1-00] 2017-Oct-05

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AS7264N − Detailed Descriptions

Figure 16:

I²C Register Programming Flow Chart

Note(s):

1. When using shuttered LEDs, the LED source(s) should be at desired brightness before conversion starts.

YES

Turn off Low Power Mode (if on)

PWR_MODE, DATA_EN

Sensor Configuration

INT_T, GAIN_IDRV, BANK, WTIME

Read For Conversion Complete

INTR_POLL_CLR

= 0x04 ?

NO

Read Sensor Data

If BANK MODE 0, read X, Y, D & C

If BANK MODE 1, read X, Y, Z, & NIR

More Data?

Turn on Low Power Mode

DATA_EN, PWR_MODE

Latch Data for Acquisition

DATA_EN

NO

One Time Device Configuration

DEV_Config_1, DEV_Config_2,

DEV_Config_3, DEV_Config_4,

DEV_Config_5

AS7264N

Power-on or device reset

AS7264N

System Configuration

Interrupt Configuration

INTR_PIN_Config,

INTR_POLL_CLR,

INTR_POLL_EN

AS7264N

Start Data Acquisition

Conversion Start

INTR_POLL_CLR,

DATA_EN (first write),

DATA_EN (separate write)

AS7264N

Interrupt Service Entry Point

(if Interrupt enabled)

YES

Clear Poll Bit

INTR_POLL_CLR

Configure LEDs

LED_IND, LED_DRV

Turn off LEDs

LED_IND, LED_DRV

Perform Auto Zero

Auto_Zero, TMPH, TMPL, TMP_Config

External

Micro-

Controller