sx8661 Semtech Corporation, sx8661 Datasheet - Page 29

• Manufacturer Part Number: sx8661
• Description: Low Power, Capacitive Button Touch And Proximity Controller 8 Sensors With Led Drivers And Analog Output
• Manufacturer: Semtech Corporation

SX8661
Low Power, Capacitive Button Touch and Proximity Controller
(8 sensors) with LED Drivers and Analog Output
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
During the power on period the SX8661 stabilizes the internal regulators, RC clocks and the firmware initializes all
registers.
During the power up the SX8661 is not accessible and I2C communications are forbidden.
As soon as the INTB rises the SX8661 will be ready for I2C communication.
3.17.2 RESETB
When RESETB is driven low the SX8661 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.
Hardware Reset
Figure 26
3.17.3 Software Reset
To perform a software reset the host needs to write 0xDE followed by 0x00 at the SoftReset register at address
0xB1.
Software Reset
Figure 27
Revision v3.2, January 2011
© 2011 Semtech Corp.
www.semtech.com
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