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SX8661Z Datasheet(PDF) 27 Page - Semtech Corporation

Part # SX8661Z
Description  Low Power, Capacitive Button Touch and Proximity Controller with LED Drivers and Analog Output
PDF  87 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SX8661Z Datasheet(HTML) 27 Page - Semtech Corporation

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ADVANCED COMMUNICATIONS & SENSING
DATASHEET
Revision v4.0, February 2016
© 2012 Semtech Corp.
www.semtech.com
27
SX8661Z
Low Power, Capacitive Button Touch and Proximity Controller
(8 sensors) with LED Drivers and Analog Output
During the power on period the SX8661Z stabilizes the internal regulators, RC clocks and the firmware initializes
all registers.
During the power up the SX8661Z is not accessible and I2C communications are forbidden.
As soon as the INTB rises the SX8661Z will be ready for I2C communication.
3.16.2 RESETB
When RESETB is driven low the SX8661Z will reset and start the power up sequence as soon as RESETB is
driven high or pulled high.
In case the user does not require a hardware reset control pin then the RESETB pin can be connected to VDD.
VDD
t res
RESETB
time
SX8661 startup
VDD
INTB
time
t por
SX8661Z ready
Figure 24
Hardware Reset
3.16.3 Software Reset
To perform a software reset the host needs to write 0xDE followed by 0x00 at the SoftReset register at address
0xB1.
SoftReset
register
time
SX8661 startup
VDD
INTB
time
t por
0xDE
0x00
SX8661Z ready
Figure 25
Software Reset



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