STCF03I datasheet(16/33 Pages) STMICROELECTRONICS

Teilenummer	STCF03I

Bauteilbeschribung	High power white LED driver with I2CTM interface

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Hersteller	STMICROELECTRONICS [STMicroelectronics]

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Introduction

STCF03I

16/33

pulse. The data on the SDA line must remain stable during the HIGH period of the clock

pulse. Any change in the SDA line at this time will be interpreted as a control signal.

7.7

Acknowledge

The master (µP) puts a resistive HIGH level on the SDA line during the acknowledge clock

pulse (see Figure 7). The peripheral (STCF03I) that acknowledges has to pull-down (LOW)

the SDA line during the acknowledge clock pulse, so that the SDA line is stable LOW during

this clock pulse. The peripheral which has been addressed has to generate an acknowledge

pulse after the reception of each byte, otherwise the SDA line remains at the HIGH level

during the ninth clock pulse duration. In this case, the master transmitter can generate the

STOP information in order to abort the transfer.

Figure 6.

Bit transfer

Figure 7.

Acknowledge on I2C Bus

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