 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
SFH7773 Datasheet(PDF) 8 Page - OSRAM GmbH |
|
||||||||||||||||||||||||||||||
SFH7773 Datasheet(HTML) 8 Page - OSRAM GmbH |
|
|
8 / 23 page  1. Activate Ambient Light Sensor 2. Activate Proximity Sensor 3. Wait 4. Read Out PS Data 5.1 Read Out ALS Data (LSB) 5.2 Read Out ALS Data (MSB) S SFH7773 Address (0x38) W A I_LED Register (0x82) A Set LED Current to 200mA (0x1E) A P S SFH7773 Address (0x38) W A PS Control Register (0x81) A Activate Free Running Mode (0x03) A P S SFH7773 Address (0x38) W A ALS Control Register (0x80) A Activate Free Running Mode (0x03) A P S SFH7773 Address (0x38) W A PS Data Register (0x8F) A P S SFH7773 Address (0x38) R A PS Data N A P S SFH7773 Address (0x38) W A ALS Data Register LSB - (0x8C) A P S SFH7773 Address (0x38) R A ALS Data (LSB) N A P S SFH7773 Address (0x38) W A ALS Data Register MSB - (0x8D) A P S SFH7773 Address (0x38) R A ALS Data (MSB) N A P Communication from Master to SFH 7773 Communication from SFH 7773 to Master W: Master Writes R: Master Reads A: Acknowledge NA: Not Acknowledge S: Start Condition P: Stop Condition Fig. 14: I 2C-bus communication for the example described below. The built-in I2C-bus interface is compatible with all common I2C-bus modes (see Tab. 3). The logic voltage (VIO) of the SFH 7773 ranges from 1.6 V – 2.0 V (according to I2C- bus specification [2]). 8.2 I²C - Bus Communication By embedding the SFH 7773 in an I²C-bus network and after applying VDD = 2.5 V, the communication can start as follows (Fig. 14 illustrates this I²C-bus conversation): 1. Activation of the ALS: The default mode of the sensor is STAND- BY and the SFH 7773 needs to be activated by the master (e.g. microcontroller). Each I²C bus communication begins with a start command “S” of the Master (SDA line is changing from “1” to “0” during SCL line stays “1”) followed by the address of the slave (SFH 7773 address is 0x38). After the 7bit slave address the read (1) and write (0) R/W bit of the master will follow. The R/W bit controls the communication direction between the master and the addressed slave. The slave is responding the proper communication with an acknowledge command. Acknowledge “A” (or not acknowledge “NA”) is performed from the receiver by pulling the SDA line down (or leave in “1” state). For the activation of the sensor the master needs to write an activation command (0x03) into the corresponding control December 12, 2011 page 8 of 23 |
Similar Part No. - SFH7773 |
|
Similar Description - SFH7773 |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
