LP5521TMEV National Semiconductor, LP5521TMEV Datasheet - Page 6

• Manufacturer Part Number: LP5521TMEV
• Description: EVAL BOARD FOR LP5521
• Manufacturer: National Semiconductor

Specifications of LP5521TMEV

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q5109809

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Evaluation Hardware
The evaluation board has four LP5521 circuits with the nec-
essary external components placed around them. Test points
for the signals are on the board edges. INT and TRIG lines
for the four chips are tied together to make it possible to syn-
Jumper P2 on the evaluation board selects supply voltage
VBATT between external power or USB power. If external
power supply is used, the VBATT and ground GND can be
connected in the green power connector X1. Possible supply
voltage range is from 2.8V to 5.5V. When the USB powering
is used, the supply voltage is 3.3V.
There are red indicator LEDs connected to the INT and GPO
pins to visualize the functionality of the pins. With INT LED it
is possible to see when external interrupt is sent. You can
FIGURE 5. LP5521 Evaluation Board Jumper Settings
6
chronize four LP5521 and make interesting lighting effects.
GPO and INT pins has indicator LEDs. Each chip has own
I
clear the interrupt by reading the Status/INT register, or by
simply pressing the Read All button on the evaluation soft-
ware when the chip which has sent the interrupt is selected.
Note that if INT pin is set to work as a CMOS output
(EN_GPO_INT bit high) then the functionality of the LED is
reverse i.e. when GPO_INT is high then the LED is off and
when GPO_INT is low, then the LED is on. See evaluation
board schematic for reference.
2
C address.
30019717