BH1721FVC-TR Rohm Semiconductor, BH1721FVC-TR Datasheet - Page 10

• Manufacturer Part Number: BH1721FVC-TR
• Description: Industrial Optical Sensors Ambient Light Sensor Digital 16bit Serial
• Manufacturer: Rohm Semiconductor
• Type: Ambient Light Sensor with Digital Outputr

Specifications of BH1721FVC-TR

• Product: Ambient Light Sensor
• Wavelength: 560nm
• Output Type: I²C™
• Package / Case: SOT-665
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

●I
© 2010 ROHM Co., Ltd. All rights reserved.
BH1721FVC
www.rohm.com
2
C Bus Access
1 ) I
2 ) Write Format
3 ) Read Format
ex )
* Please refer formality I
Write measurement command and Read measurement result are done by I
specification of I
BH1721FVC is not able to accept plural command without stop condition. Please insert SP every 1 Opecode.
2
ST
ST
High Byte = "1000_0011"
Low Byte = "1001_0000"
C Bus Interface Timing chart
SDA
SCL
( 2
t
f
15
+ 2
S
9
from Master to Slave
+ 2
2
t
C Bus interface, and follow the formally timing chart.
8
t
HD ; STA
2
LOW
C bus specification of NXP semiconductors.
+ 2
Slave Address
Slave Address
7
"0100011"
"0100011"
+ 2
4
) / 1.2 ≒ 28067 [ lx ]
t
r
t
HD ; DAT
2
7
t
SU ; DAT
2
6
t
HIGH
2
t
Low Byte [7:0]
5
2
R/W
4
R/W
0
t
1
f
t
2
SU ; STA
3
10/15
Ack
Ack
2
2
2
1
Sr
2
0
2
15
t
2
HD ; STA
14
HD
2
Ack
C Bus interface. Please refer the formally
from Slave to Master
High Byte [15:8]
2
13
Opecode
2
SP
12
2
11
t
SU;STO
2
10
2
9
t
r
2
8
Technical Note
2010.02 - Rev.A
P
t
BUF
Ack
Ack
S
SP