Testing The Cyclic Sense Function With Onboard Switches; Setting Vsup As An Input For Wake1 Pin (Global) - NXP Semiconductors KITFS23LDOEVM User Manual

NXP Semiconductors

4.4.11.3 Testing the cyclic sense function with onboard switches

HVIO1, HVIO2, WAKE1, and WAKE2 pins can be configured for cyclic sensing when coupled with their
corresponding HSx.
The KITFS23LDOEVM provides a means to emulate door switches sensing with onboard switches, as an
application example for the cyclic sense configuration.
Figure 8. Door switch emulation for cyclic sense configuration
Table 15. Cyclic sense application examples (SW3/SW6)
Schematic label
SW3-1 (OFF)
SW3-2 (ON)
SW6-1 (OFF)
SW6-2 (ON)

4.4.11.4 Setting VSUP as an input for WAKE1 pin (global)

The WAKE1 and WAKE2 pins can be configured as global input pins.
The KITFS23LDOEVM provides a means to test the global input pin configuration with onboard switches.
Switching SW4 ON configures VSUP as input for WAKE1 pin.
Figure 9. Wake pins configuration as global input pins
Table 16. Wake pins as global input application examples (SW4)
Schematic label
SW4-1 (OFF)
SW4-2 (ON)
UM11879
User manual
R24
HVIOx_CS_IN
HS2
10 kΩ
1 2
SW3
GND
Signal name
Open switch
HVIOx_CS
Open switch
WAKEx_CS
VSUP
1 2
SW4
Signal name
Open switch
VSUP_TO_WAKE1
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 25 September 2023
R25
10 kΩ
C132
C131
1000 pF
0.01 µF
DNP
GND GND
Description
HVIOx senses HS2 output.
HVIOx senses 0 V (GND).
WAKEx senses HS4 output.
WAKEx senses 0 V (GND).
R56
WAKE1_IN
5.1 kΩ
C54 C55
0.022 µF 0.01 µF
GND GND
Description
Place input on WAKE1_IN (J10-1).
VSUP configured as input for WAKE1 pin (global).
KITFS23LDOEVM evaluation board
HVIOx_CS
aaa-049450
WAKE1_GBL
aaa-049451
UM11879
© 2023 NXP B.V. All rights reserved.
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