MAX44000EVSYS# Maxim Integrated, MAX44000EVSYS# Datasheet - Page 6

• Manufacturer Part Number: MAX44000EVSYS#
• Description: Optical Sensor Development Tools MAX44000 EVAL KIT
• Manufacturer: Maxim Integrated

Specifications of MAX44000EVSYS#

• Rohs: yes
• Tool Is For Evaluation Of: MAX44000
• Interface Type: I2C
• Maximum Operating Temperature: + 105 C
• Description/function: Evaluation system
• Minimum Operating Temperature: - 40 C
• Operating Supply Current: 7 uA
• Operating Supply Voltage: 1.7 V to 3.6 V
• Product Type: Evaluation Module

The Proximity Sensor Configuration tab sheet
(Figure 2) has all the functions to configure the proximity
sensor of the device.
In the Transmit Configuration group box, use the LED
Drive Current (DRV[3:0]) track bar to select the desired
IRLED drive current. The IR Proximity LED current is
shown on the right of the track bar. Press the Set button
to set the DRV register.
The Proximity Threshold group box can be used to
control the proximity interrupt function. Use the Receiver
Threshold (PRXTHR[7:0]) track bar to select the proxim-
ity threshold level and press the adjacent Set button to
set the PRXTHR register. After the Proximity Interrupt
Enable checkbox is checked, if the Above the Receiver
Threshold radio button is selected in the ABOVE /
BELOW Proximity Receiver Select (ABOVE) group
box, and the proximity measurement is greater than the
value stored in the PRXTHR register, the interrupt event is
recorded. Similarly, if the Below the Receiver Threshold
radio button is selected, and the proximity measurement
is less than the value stored in the PRXTHR register, the
interrupt event is recorded. Use the PRXPST[1:0] drop-
down list in the Timer Threshold group box to set the
persist value that controls how readily the proximity inter-
rupt logic reacts to a detected event.
The Ambient Sensor Configuration tab sheet (Figure 3)
has all the functions to configure the ambient sensor of
the device.
In the Receive Configuration group box, use the
ALSTIM[1:0] drop-down list to set the integration time
and resolution for the ALS ADC. The ALSPGA[1:0]
drop-down list sets the gain of the ambient light sensing
measurement.
Use the LUX Thresholds group box to set the upper and
lower lux threshold. After the Ambient Interrupt Enable
checkbox is checked, if the ambient measurement is
higher than the upper threshold or lower than the lower
threshold, the interrupt event is recorded. The interrupt
bit is reset only after reading the interrupt status register.
Proximity Sensor Configuration Tab
Ambient Sensor Configuration Tab
_________________________________________________________________ Maxim Integrated Products 6
In the Upper Threshold group box, use the UPTHR[13:0]
track bar to select the desired upper lux threshold. Press
the adjacent Set button to set the UPTHR register.
Similarly use the LOTHR[13:0] track bar in the Lower
Threshold group box to select the desired lower lux
threshold and press the adjacent Set button to set the
LOTHR register.
Use the ALSPST[1:0] drop-down list in the Timer
Threshold group box to set the persist value that con-
trols how readily the ambient interrupt logic reacts to a
detected event.
The Gain Control group box is used to modify the
gain of the green channel and the IR channel. Use the
TRIM_GAIN_GREEN[6:0] track bar to select the gain
trim for the green channel. Use the TRIM_GAIN_IR[8:0]
track bar to select the gain trim for the IR channel. Press
the Set button to set the TRIM_GAIN_GREEN and TRIM_
GAIN_IR registers. Check the TRIM Enable checkbox to
force the part to use the trim value written in the trim gain
registers.
In the Status group box, the Last ALS/PROX Reading
group box displays the last set of ambient and proximity
ADC data from the graphs on the Data Conversion tab
sheet (Figure 1).
Press the Read button to read the status of the interrupt
pin (INT). If the interrupt signal is asserted, the status reg-
ister (0x00) is read and displayed in the Power/Interrupt
Status group box.
The Register Map tab sheet (Figure 4) contains a regis-
ter map of the device. The tab is organized from left to
right with register names, bit names, register addresses,
edit boxes, Read buttons, and Write buttons. The bit
names are used to display the current state of each bit
(bold text = 1). In addition, a register’s bits can be indi-
vidually toggled by single-clicking on the bit’s name. The
edit boxes are used to display a register’s state and are
updated after a bit click or Read button press. The user
can also change the value of the register by entering a
value in the edit box and pressing the adjacent Write
button.
Evaluates: MAX44000
Register Map
Status