E909-05 Datasheet, PDF (16/67 Pages) ELMOS Semiconductor AG – The HALIOS® multi purpose optical sensor is based on an optical bridge which provides a contactless detec-tion of gestures (e.g. movement of a finger).

HALIOS® MULTI-PURPOSE OPTICAL SENSOR WITH HIGH LIGHT IMMUNITY
E909.05
PRELIMINARY INFORMATION AUG 02, 2011
5.4 Reset Generation
5.4.1 Reset Generation (RESGEN)
The ASIC is equipped with a reset input pin which can be used to reset the chip. Any low pulse longer than
TDEBNRST on the external reset line will be sensed and causes an ASIC reset.
The ASIC contains different dynamic and static reset sources. The static sources trigger the master reset as
long as the cause for the reset persists. The dynamic sources trigger the reset for a defined minimum reset
time. After that time has expired the system reset is released. In case the dynamic source is still signaling a
reset the reset is re-triggered.
● Static reset sources:
• A power up sequence of the core voltage (power on reset)
• Brown out of the core voltage
● Dynamic reset sources:
• SRAM parity error
• CPU register parity error
• watchdog time out
NRST_PAD in
NRST_DEB
TDEB_NRST
t
Filtered by debouncer
Figure 5.4.1-1 Timing of the external reset signal
This document contains information on a pre-production product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.
ELMOS Semiconductor AG
Data Sheet 16 / 67
QM-No.: 25DS0014E.00