BH1751FVI-TR Rohm Semiconductor, BH1751FVI-TR Datasheet - Page 7

• Manufacturer Part Number: BH1751FVI-TR
• Description: IC AMBIENT LIGHT SENSOR 6WSOF
• Manufacturer: Rohm Semiconductor
• Series: -r

Specifications of BH1751FVI-TR

• Wavelength: 560nm
• Output Type: I²C™
• Package / Case: 6-WSOF Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

●Measurement sequence example from "Write instruction" to "Read measurement result"
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BH1751FVI
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ex1) Continuously H-resolution mode ( ADDR = 'L' )
ex2 ) One time L-resolution mode ( ADDR = 'H' )
① Send "Continuously H-resolution mode " instruction
② Wait to complete 1st H-resolution mode measurement.( max. 180ms. )
③ Read measurement result.
How to calculate when the data High Byte is "10000011" and Low Byte is "10010000"
The result of continuously measurement mode is updated.( 120ms.typ at H-resolution mode, 16ms.typ at L-resolution
mode )
① Send "One time L-resolution mode " instruction
② Wait to complete L-resolution mode measurement.( max. 24ms. )
③ Read measurement result
How to calculate when the data High Byte is "00000001" and Low Byte is "00010000"
In one time measurement, Statement moves to power down mode after measurement completion.If updated result is need
then please resend measurement instruction.
ST
ST
S T
S T
( 2
( 2
15
8
+ 2
+ 2
4
from Master to Slave
9
) / 1.2 ≒ 227 [ lx ]
+ 2
8
+ 2
0100011
1011100
7
1011100
+ 2
0100011
4
) / 1.2 ≒ 28067 [ lx ]
Low Byte [ 7:0 ]
Low Byte [ 7:0 ]
0
0
1
1
Ack
Ack
7/16
Ack
Ack
00010000
00100011
High Byte [ 15:8 ]
High Byte [ 15:8 ]
Ack
Ack
from Slave to Master
SP
SP
Ack
Ack
Technical Note
2010.02 - Rev.A
Ack
Ack
SP
SP