sx8635 Semtech Corporation, sx8635 Datasheet - Page 22
sx8635
Manufacturer Part Number
sx8635
Description
Low Power, Capacitive Button And Wheel Touch Controller 12 Sensors With Enhanced Led Drivers And Proximity Sensing
Manufacturer
Semtech Corporation
Datasheet
1.SX8635.pdf
(81 pages)
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SX8635
Low Power, Capacitive Button and Wheel Touch Controller
(12 sensors) with Enhanced LED Drivers and Proximity Sensing
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
3.14 Reset
The reset can be performed by 3 sources:
- power up,
- RESETB pin,
- software reset.
3.14.1 Power up
During power up the INTB is kept low. Once the power up sequence is terminated the INTB is released
autonomously. The SX8635 is then ready for operation.
Power Up vs. INTB
Figure 21
During the power on period the SX8635 stabilizes the internal regulators, RC clocks and the firmware initializes all
registers.
During the power up the SX8635 is not accessible and I2C communications are forbidden.
As soon as the INTB rises the SX8635 will be ready for I2C communication.
3.14.2 RESETB
When RESETB is driven low the SX8635 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 22
Revision 7_8, October 10
© 2010 Semtech Corp.
www.semtech.com
22
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