S9706_15 Datasheet, PDF (4/6 Pages) Hamamatsu Corporation – Digital color sensor

Digital color sensor
S9706
Output vs. illuminance
Low range
10000
(Typ. A light source, Green)
Tg=100 s
1000
10 s
1s
100 ms
100
10 ms
1 ms
10
100 μs
10 μs
1
0.1 1 10 100 1000 10000 100000 1000000
Illuminance (lx)
KPICB0099EA
10000
High range
(Typ. A light source, Green)
Tg=100 s
1000
10 s
1s
100
100 ms
10 ms
1 ms
10
100 μs
10 μs
1
0.01 0.1
1 10 100 1000 10000 100000
Illuminance (lx)
KPICB0100EA
Timing chart
Range
Gate
t4
CK
Dout
t5
t3
tg
12 pulses
12 pulses
12 pulses
····
····
····
t1
t2
tck
tw
Red output (12-bit output)
Green output (12-bit output)
Blue output (12-bit output)
LSB
····
MSB LSB
····
MSB LSB
····
MSB
Operating sequence
(1) Set the Gate terminal and CK terminal to “Low”.
(2) Select the desired sensitivity with the Range terminal.
(3) Set the Gate terminal from “Low” to “High”, to start integrating the light intensity.
(4) After the desired integration time (tg) has passed, set the Gate terminal from “High” to “Low” to end the light intensity integration.
(5) Measurement data is output from the Dout terminal by inputting 36 CK pulses to the CK terminal.
Note 1: A total of 36 CK pulses are required to read out 3-color measurement data. Red data is output by the first 12 pulses,
green data by the next 12 pulses, and blue data by the last 12 pulses. Measurement data is output from the LSB side.
Note 2: Measurement data changes at the CK pulse rising edge.
Note 3: Do not switch the Range terminal during integration time (tg).
KPICC0115EB
4