AS7221 datasheet(22/36 Pages) AMSCO

Part #	AS7221

Description	Calibrated XYZ tri-stimulus color sensing for direct translation to CIE 1931/1976 standard observer color MAPS

PDF	36 Pages

Scroll/Zoom	100%

Manufacturer	AMSCO [ams AG]

Direct Link	http://www.ams.com

Logo

22 / 36 page

Page 22

ams Datasheet

Document Feedback

[v1-01] 2016-Dec-08

AS7221 − Detailed Description

Figure 26:

I²C Sequential Read

I²C Sequential Read: Shows the format of an I²C sequential read access.

Sequential Read is the extended form of Random Read, as more

than one register-data bytes are transferred subsequently. In

difference to the Random Read, for a sequential read the

transferred register-data bytes are responded by an

acknowledgement from the master. The number of data bytes

transferred in one sequence is unlimited (consider the behavior

of the word-address counter). To terminate the transmission the

master has to send a not-acknowledge following the last data

byte and generate the STOP condition subsequently.

The AS7221 is compatible to the NXP two wire specifications.

www.nxp.com/documents/user_manual/UM10204.pdf

Version 4.0 Feb 2012 for standard mode and fast mode.

Data 1

N P

WA++

read WA++

Data n

read WA++

AS7221 Datasheet(PDF) 22 Page - ams AG