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TCS34723 Datasheet(PDF) 18 Page - ams AG

Part No. TCS34723
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Maker  AMSCO [ams AG]
Homepage  http://www.ams.com
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TCS34723 Datasheet(HTML) 18 Page - ams AG

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ams Datasheet
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[v1-02] 2016-Feb-08
TCS3472 − Principles of Operation
Power Management
Power consumption can be managed with the Wait state,
because the Wait state typically consumes only 65 μA of IDD
current. An example of the power management feature is given
below. With the assumptions provided in the example, average
IDD is estimated to be 152 μA.
Figure 21:
Power Management
Average IDD Current = ((43.2 × 0.065) + (43.2 × 0.235) +
(2.40 × 0.235)) / 89 ≈ 152 μA
Keeping with the same programmed values as the example,
Figure 22 shows how the average IDD current is affected by the
Wait state time, which is determined by WEN, WTIME, and
WLONG. Note that the worst-case current occurs when the Wait
state is not enabled.
Figure 22:
Average IDD Current
System State
Machine State
Programmable
Parameter
Programmed
Value
Duration
Typical
Current
Wait
WTIME
0xEE
43.2 ms
0.065 mA
WLONG
0
RGBC Init
2.40 ms
0.235 mA
RGBC ADC
ATIME
0xEE
43.2 ms
0.235 mA
WEN
WTIME
WLONG
WAIT State
Average IDD Current
0
n/a
n/a
0 ms
291
μA
1
0xFF
0
2.40 ms
280
μA
1
0XEE
0
43.2 ms
152
μA
1
0x00
0
614 ms
82
μA
10x00
1
7.37 s
67
μA


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