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SI1133 数据表(PDF) 11 Page - Silicon Laboratories

部件名 SI1133
功能描述  UV Index/Ambient Light Sensor IC with IC Interface
Download  43 Pages
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制造商  SILABS [Silicon Laboratories]
网页  http://www.silabs.com
标志 SILABS - Silicon Laboratories

SI1133 数据表(HTML) 11 Page - Silicon Laboratories

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5. User to Sensor Communication
5.1 Basic I2C Operation
I2C operation is dependent on serial I2C reads and writes to an addressable bank of memory referred to as I2C space. The diagram
below outlines the registers used, some functionality and the direction of data flow. The I2C address is initially fixed but can be program-
med to a new value. This new value is volatile and reverts to the old value on hardware or software reset. Only 7-bit I2C addressing is
supported; 10-bit I2C addressing is not supported. The Si1133 responds to the I2C address of 0x55 or to an alternate address of 0x52.
SDA
SCL
SDA
Engine
PART ID
MFR ID
REV ID
MCU
INPUT3 -> 0
COMMAND
RESPONSE_1
OUTPUT0 to 25
AND
OR
INT
6
6
6
IRQ_EN
IRQ_STATUS
RESPONSE_0
Bit7: RUNNING
INFO_0 & 1 (SPARES)
CR
Sequencial Write Group
Sequencial Read Group
Part and Version ID Group
COMMAND_WR_INT
Interrupt
Logic
OD
Bit6: SUSPEND
SFR
SPACE
5
I2C
SPACE
Bit5: SLEEP
Figure 5.1. I2C Interface Block Diagram
Si1133 Data Sheet
User to Sensor Communication
silabs.com | Smart. Connected. Energy-friendly.
Rev. 0.91 | 10


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