AS7225 datasheet(23/76 Pages) OSRAM

Il numero della parte	AS7225

Spiegazioni elettronici	Calibrated XYZ Chromatic Smart Lighting Director

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AS7225

I²C Slave Interface

Datasheet

• PUBLIC

DS000496

• v2-00 • 2019-Jun-28

│ 22

if ((status &

I2C_AS72XX_SLAVE_RX_VALID) !=

// Read data is ready.

break;

}

// Read the data to complete the operation.

d = i2cm_read(I2C_AS72XX_SLAVE_READ_REG) ;

return d ;s

}

The details of the i2cm_read() and i2cm_write() functions in previous Figures are dependent upon the

nature and implementation of the external I²C master device.

8.4

I²C Slave Timing Characteristics

Figure 14:

Electrical Characteristics of AS7225

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

I²C Interface

fSCLK

SCL Clock Frequency

100

400

kHz

tBUF

Bus Free Time

Between a STOP and

START

1.3

μs

tHD:STA

Hold Time

(Repeated) Start

0.6

µs

tLOW

LOW Period of SCL

Clock

1.3

μs

tHIGH

HIGH Period of SCL

Clock

0.6

μs

tSU:STA

Setup Time for a

Repeated START

0.6

μs

tHD:DAT

Data Hold Time

0.9

μs

tSU:DAT

Data Setup Time

100

Rise Time of Both

SDA and SCL

300

Fall Time of Both

SDA and SCL

300

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