MLX75031 Datasheet, PDF (31/67 Pages) Melexis Microelectronic Systems – Optical Gesture & Proximity Sensing IC

MLX75031
Optical Gesture & Proximity Sensing IC
with Integrated LED Drivers
Datasheet
8.11.3.4. RSTBY/CSTBY - Request Standby/Confirm Standby
To put the device in Standby Mode, a similar system is used: the master shall send the RSTBY command,
requesting the slave to go into Standby Mode. The slave device sets bit 3 of the internal status flag byte
high, indicating that it wants to go into standby. The master has to confirm this by sending the CSTBY byte.
The pin SLEEPB will be set low a time t_sleepb after the pin CS is set high at the end of the CSTBY command.
The status flag can be cleared by uploading a CR command or a NRM command.
Note that uploading a Chip Reset makes the device switching into normal running mode.
The state of the DR pin will not be changed when going into Standby Mode. However, after a wake-up event
the DR pin is set low during a time t_{wakeup_stby}.
8.11.3.5. NRM – Normal Running Mode
The NRM command shall be used to wake up the device from Sleep Mode, or to go from Standby into
Normal Running Mode. This requires a time t_{wakeup_slp} resp. t_{wakeup_stby} before the internal analog circuitry is
fully set up again. The NRM will also clear the Sleep Request or Standby Request flag.
When the device wakes up from Standby or Sleep mode, the pin SLEEPB will go high, to indicate that the
device state changed into Normal Running Mode. The t_sleepb time is not applicable in case of wake-up.
When the NRM command is uploaded during normal running mode, the state of the device will not be
influenced, except when the Sleep Request or Standby Request flag was set high due to a RSLP or RSTBY
command. In this case, the Sleep Request or Standby Request flag will be cleared; the state of the DR pin
will not change.
REVISION 001 – JANUARY, 2013
39010xxxxx
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