Datasheet

NXP Semiconductors
AN12395
OM-SE050ARD hardware overview
AN12395 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2019. All rights reserved.
Application note Rev. 1.1 — 27 June 2019
534311 13 / 24
5 OM-SE050ARD board use cases
This section details the jumper settings to configure the differnet interfaces and to enable
specific use cases with the OM-SE050ARD board.
5.1 SE050 via Arduino header
This section details the jumper configuration to enable the I
2
C slave interface in the
Arduino header. The related jumpers of the OM-SE050ARD for I
2
C slave interface
configuration are:
• J37 and J38: Configure the pull up resistors of the I
2
C interface.
• J19: Configures V
DD
supply voltage options.
• J24: Configures V
DD
supply voltage options in case the LDO is used.
Table 7. Jumper settings for I
2
C slave interface configuration
Jumper Configuration Comment
J6 Set to 1-2
(Default)
Contactless operation disabled
J7 Set to 2-3
(Default)
Contactless operation disabled
J9, J10 Set to
“Open” (Default)
I
2
C master pull ups disabled
J12 Set to 2-3
(Default)
SE_RST routed to ARD_RST on J1:3
J13 Set to 2-3
(Default)
SE_ENA set to ARD_ENA on J1:6
J14 Set to 3-4
(Default)
SE_V
OUT
as SE_V
DD
Set to 3-4
(Default)
I
2
C_SDA routed to ARD_SDA_R3 (J2:9)J15
Set to 1-2 I
2
C_SDA routed to ARD_SDA (J4:5)
J16 Set to 2-3 V
DD
as SE_V
IN
Set to 3-4
(Default)
I
2
C_SCL routed to ARD_SCL_R3 (J2:10)J17
Set to 1-2 I
2
C_SCL routed to ARD_SCL (J4:6)
Set to 2-3
(Default)
SE_V
DD
=3.3V from Arduino-R3 voltagesJ19
Set to 1-2 SE_V
DD
=3.3V from LDO.
Set to 1-2
(Default)
No input LDOJ24
Set to 5-6 5V_ARD to LDO
J25, J26 Do not care Dummy jumpers
Set to
“Open” (Default)
3k3 pull-up resistor for I
2
C standard modeJ37, J38
Set to "Closed" 560 Ohm parallel pull-up resistor for I
2
C high speed mode