stmpe16m31 STMicroelectronics, stmpe16m31 Datasheet - Page 74
stmpe16m31
Manufacturer Part Number
stmpe16m31
Description
S-touch? 16/24-channel Touchkey Controller With Pwm And Ratio Engines
Manufacturer
STMicroelectronics
Datasheet
1.STMPE16M31.pdf
(85 pages)
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Application information
17
17.1
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Application information
Average current consumption
In application, it is unlikely that touch event occurs 100% of the time. Power consumption for
STMPExxM31 can be reduced significantly with the proper use of the available device Sleep
mode. The device can be programmed into Sleep mode upon detecting of the finger lift.
During the Sleep mode, upon detecting a touch, STMPExxM31 goes from Sleep to Active
mode after 15 ms.
As such, for an example touch profiles in
over the 6 seconds is:
= [(0.185+0.285+0.285) * 400 uA + ( 5.245 * 50 uA)]/6
= 94 uA.
Figure 20. Average current consumption
400 u A
5 0 u A
0 .0 s
0 .3 s
0 .5 s
0 .8 s
Doc ID 16174 Rev 3
1 .1 s
Figure 20
below, the Average current consumption
2 .3 s
STMPE16M31, STMPE24M31
2 .6 s
6 .0 s
AM08687V1
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