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SFH5721 Datasheet(PDF) 19 Page - OSRAM GmbH

Part # SFH5721
Description  Chip LED Digital Ambient Light Sensor
PDF  54 Pages
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Manufacturer  OSRAM [OSRAM GmbH]
Direct Link  http://www.osram.com
Logo OSRAM - OSRAM GmbH

SFH5721 Datasheet(HTML) 19 Page - OSRAM GmbH

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SFH 5721
DATASHEET
DATASHEET
19 | Version 1.1 | 2022-02-28
Register Set
The Digital Light Sensor (DLS) IC is controlled and monitored by data registers and a command
register accessed through the serial interface. These registers provide for a variety of control
functions and can be read to determine results of the ADC conversions.
For guaranteed startup operation (specifically with a low VDD voltage and a slow VDD rise time) the
following sequence is recommended immediately following power up:
Sequence
Description
1.
VDD power up
2.
Wait 5 ms
3.
Start I2C-addr, 0x62, 0x55, stop
4.
Start I2C-addr, 0xEC, stop
5.
Wait 5 ms
6.
IC is ready for use
Pointer Register
I2C Pointer Register
Bit
NAME
R/W
Default
Description
7:6
-
R/W
00
Not used
5:0
REGSEL[5:0]
R/W
00 0000
Register Select
The SFH 5721 operates in slave mode and is designed for I2C fast mode (400 kHz). The I2C
pointer register is used to select a register for I2C reading and writing. For the selection of the
different SFH 5721 registers you only need 6 bits, B6 and B7 must be 0.



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