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STMPE16M31 Folha de dados(PDF) 74 Page - STMicroelectronics

Nome de Peças STMPE16M31
Descrição Electrónicos  S-Touch® 16/24-channel touchkey controller with PWM and ratio engines
PDF  85 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE16M31 Folha de dados(HTML) 74 Page - STMicroelectronics

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Application information
STMPE16M31, STMPE24M31
74/85
Doc ID 16174 Rev 4
17
Application information
17.1
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 Figure 20 below, the Average current consumption
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
AM08687V1
0.3s
0.5s
0.8s
1.1s
2.3s 2.6s
0.0s
6.0s
50uA
400uA
Obsolete
Product(s)
- Obsolete
Product(s)



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