MLX75031 Datasheet, PDF (29/67 Pages) Melexis Microelectronic Systems – Optical Gesture & Proximity Sensing IC

MLX75031
Optical Gesture & Proximity Sensing IC
with Integrated LED Drivers
Datasheet
8.11.2. Operation Modes
The MLX75031 can work in three operation modes :
1. Normal mode :
Normal operation is the state during which all internal blocks are powered on (default state after power-
on). Measurement sequences and their conversion to digital values are regularly ongoing.
The pin SLEEPB is set high when the device is in Normal mode.
2. Standby mode :
Standby mode is defined as the state in which only the Watchdog and oscillator is active.
The pin SLEEPB is set low when the device is in Standby mode.
3. Sleep mode :
In Sleep mode the complete system is switched off. Only the SPI can work.
The Optical Gesture & Proximity Sensing IC can switch in the normal mode via SPI.
The pin SLEEPB is set low when the device is in Sleep mode.
An overview of modes in which the device can operate is shown in Figure 10 below. It is also indicates which
commands are available in the different operation modes and it shows the state of the different flags in the
Status Flags byte.
Figure 10 : State Diagram of the MLX75031
REVISION 001 – JANUARY, 2013
39010xxxxx
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