LMT Cellular LPWAN Extension Boards

Simply put

How it works

Your Infineon AI Kit processes sensor data with AI. This board adds the missing piece — sending that data to the cloud over cellular networks, anywhere in the world.

LMT extension board mounted on Infineon PSoC 6 AI Kit

01

Sensors collect data

Temperature, motion, sound, vibration — your Infineon AI Kit reads the physical world through its sensors.

02

Edge AI processes it

The AI chip analyzes data right on the device. No cloud needed for the heavy computation. Decisions happen in milliseconds.

03

LMT board sends it

This extension board adds cellular connectivity. It transmits results over LTE-M / NB-IoT — works anywhere with cell coverage, no Wi-Fi needed.

04

You see it in the cloud

Data appears on your LMT IoT dashboard. Set up alerts, track trends, control devices remotely.

Wi-Fi

Needs a router nearby
Range: ~50 meters
Indoor use mostly
Requires network setup

vs

Cellular (LTE-M)

Works with cell coverage
Range: kilometers
Outdoor, remote, mobile
Built-in SIM, zero setup

No expertise required

The board comes pre-configured. Built-in global SIM, pre-flashed firmware. Connect the antenna, write a few commands, power on. Data flows to the cloud.

In the box

What's included

📟 Extension Board The cellular connectivity board with built-in global SIM

📶 Cellular Antenna Flexible antenna with plug connector — must be attached before use

🔧 Pin Headers Metal connectors you solder onto your Infineon kit for mounting

Which board do I need?

For Edge E84 AI Kit Smaller board, simpler setup

For PSoC 6 AI Kit More GPIO options, power protection

Not sure which Infineon kit you have? Check the label on your board.

Technical

Specifications

nRF9151

Nordic Semiconductor modem/MCU

LTE-M

Cat-M1 or NB-IoT (Cat-NB1/NB2)

<8 μA

Deep sleep at 3.6V supply

90 mJ

Per upload (100B, good signal)

Ordering

Product #	Compatible Kit	Includes
`EBI151UFI`	Infineon PSoC Edge E84 AI Kit	Board + antenna + pin headers
`EBI251UFI`	Infineon PSoC 6 AI Kit	Board + antenna + pin headers

Full Specifications

Parameter	Value
Main modem / MCU	Nordic Semiconductor nRF9151
Connectivity	LTE-M (Cat-M1) or NB-IoT (Cat-NB1/NB2)
SIM configuration	Global MFF2 SIM included + nano-SIM slot
Deep sleep current	<8 μA at 3.6V
Single upload energy	90 mJ / 25 μWh (100B payload)
Antenna	Molex 824–2170 MHz flexible, U.FL (included)
Firmware updates	FOTA (LMT module only)
Firmware	Pre-flashed, pre-provisioned to your cloud account

Included in box: Extension board, Molex cellular antenna (U.FL), unsoldered female pin headers for Infineon kit mounting.

Hardware

Board Variants

Two variants available — one for each supported Infineon AI Kit.

EBI151UFI Edge E84 AI Kit

EBI251UFI PSoC 6 AI Kit

EBI151UFI — Edge E84 Board

Board Diagram

Infineon connection User interaction Testing / flashing

Components

UART connectionsSerial data link to host

Configurable GPIORouted to Infineon board

Antenna portsU.FL for LTE + GPS

Reset buttonHardware reset

User buttonProgrammable action

RGB LEDStatus indication

Power LEDActive power state

Tag-ConnectnRESET, SWDIO, SWDCLK

Debug headerUART inspection

Test pointsVDD, GND measurement

Nano-SIM slotBack side, custom SIM

Pinout

Connections between the Infineon host board, LMT SoM, and user-accessible I/O:

Header	Infineon Side	LMT SoM Side	Function
`J5`	UART TX	UART RX	Serial data → LMT
`J5`	UART RX	UART TX	Serial data ← LMT
`J5`	GND	GND	Ground reference
`J5`	VDD	VDD	Power supply
`J1`	—	nRESET	Tag-Connect: reset
`J1`	—	SWDIO	Tag-Connect: debug data
`J1`	—	SWDCLK	Tag-Connect: debug clock
TP	—	VDD	Test point: power output
TP	—	GND	Test point: ground

Design Notes

PCB shape prevents RF interference with the host board's Wi-Fi antenna and radar sensor. Keep clearance area free of metallic components.

All unmarked header pins are electrically isolated pass-through connections
Power indicator LED across VDD/GND confirms active state
Tag-Connect: use TC2030-CTX or TC2030-CTX-NL (space-saving)

Dimensions

44.75 × 35.99 mm — 2× Ø3.2 mm mounting holes

EBI251UFI — PSoC 6 Board

Board Diagram

Infineon connection User interaction Testing / flashing

Components

UART connectionsSerial data to host

Configurable GPIOVia solder bridges JP1–JP8

Antenna portsU.FL for LTE + GPS

Reset buttonHardware reset

User buttonProgrammable action

RGB + Power LEDsStatus + power state

Fault LEDPower fault indicator

Tag-ConnectnRESET, SWDIO, SWDCLK

Test points3V3, VDD, GND, EN, FAULT

Solder bridgesJP1–JP8 on back

Nano-SIM slotBack side, custom SIM

Power Protection

120 mA maximum. The host Infineon board supplies max 120 mA. The LMT board uses a TI TPS2553 power switch to enforce this limit and provide short-circuit protection.

Extended cellular TX (large payloads) can exceed the limit — buffering capacitors absorb transient spikes
On short-circuit: power disconnected immediately, fault LED illuminates, auto-recovery after brief delay
Bridge JP8 to route FAULT signal to Infineon P9.0
Test points: 3V3 (raw supply) and VDD (after power limiter)

Pinout — J2 Header (Infineon PSoC side)

Pin	Infineon	LMT SoM	Bridge	Function
1	VDD	VDD	—	Power supply
2	GND	GND	—	Ground
3	P5.0	GPIO_1	`JP1`	Configurable I/O
4	P5.1	GPIO_2	`JP2`	Configurable I/O
5	P5.2	GPIO_3	`JP3`	Configurable I/O
6	P5.3	GPIO_4	`JP4`	Configurable I/O
7	P9.0	FAULT	`JP8`	Power fault signal
8–12	Pass-through (electrically isolated)			—

Pinout — J3 Header (Infineon PSoC side)

Pin	Infineon	LMT SoM	Bridge	Function
1	P6.0 (TX)	UART RX	—	Serial data → LMT (default)
2	P6.1 (RX)	UART TX	—	Serial data ← LMT (default)
3	P6.2	GPIO_5	`JP5`	Configurable I/O
4	P6.3	GPIO_6	`JP6`	Configurable I/O
5	P6.4	GPIO_7	`JP7`	Configurable I/O
6–10	Pass-through (electrically isolated)			—

Pinout — J1 Connector (Tag-Connect)

Pad	LMT SoM	Function
1	VDD	Power reference
2	SWDIO	Debug data
3	nRESET	Module reset
4	SWDCLK	Debug clock
5	GND	Ground

Solder Bridges (JP1–JP8)

JP1–JP8 on board back

Jumper	Infineon	LMT	Notes
`JP1`	P5.0	GPIO_1	General purpose
`JP2`	P5.1	GPIO_2	General purpose
`JP3`	P5.2	GPIO_3	General purpose
`JP4`	P5.3	GPIO_4	General purpose
`JP5`	P6.2	GPIO_5	General purpose
`JP6`	P6.3	GPIO_6	General purpose
`JP7`	P6.4	GPIO_7	General purpose
`JP8`	P9.0	FAULT	Power fault readback

Bridging requires custom firmware on the LMT board. Pre-flashed firmware only supports default UART data transfer.

Mechanical

Dimensions

Board dimensions and mounting hole positions.

E84 Board (EBI151UFI)

Width	44.75 mm
Height	35.99 mm
Mounting holes	2× Ø3.2 mm, 14.65 mm spacing
Corner radii	5× R2, 3× R1
Board thickness	~2.35 mm (with components)

PSoC 6 Board (EBI251UFI)

Form factor	Matches PSoC 6 AI Kit footprint
Mounting	4× corner mounting holes
Capacitors	3× bulk caps (C9, C10, C11) for TX current buffering

STEP files available for 3D CAD integration. Contact the LMT IoT team for access.

Getting started

Setup in 3 steps

📦 1. Unbox & assemble Solder the included pin headers onto your Infineon kit. Plug the antenna into the LTE port. Mount the board on top.

☁️ 2. Check the cloud Log into LMT IoT Cloud. Your device is already registered. Set up what data you want to send using the simple wizard.

🚀 3. Write & upload code Add a few lines to your Infineon firmware using the LMT SDK. Power on — data flows to the cloud automatically.

This is what it looks like assembled

Board plugs right on top

What if something doesn't work?

The board has a debug port you can connect to see what's happening. There's also a reset button and status LEDs that tell you the connection state. Switch to Technical mode for detailed troubleshooting.

Getting Started

Setup Guide

Three phases: cloud configuration, firmware development, and hardware mounting.

1. Cloud Configuration

1

Verify Cloud Registration

Your device is pre-provisioned to your LMT IoT Cloud account. Verify it appears in your device list.

Actions → Set up device

2

Configure Data Payload

Define the structure of transmitted data using the configuration wizard. Set up CoAP protocol tracks for incoming messages.

Configure tracks: measurement name, multiplier, unit

2. Firmware Development

Implement the "serial-to-cloud gateway" commands in your host Infineon firmware. Ensure the data packet format matches the cloud configuration.

Refer to the LMT IoT SDK documentation for the full command reference and integration examples.

3. Hardware Mounting

1

Prepare the Extension Board

Connect the U.FL cellular antenna to the port labeled LTE. For the EBI251UFI: bridge any needed solder pads before mounting.

2

Solder Pin Headers

Solder the included female pin headers onto the Infineon PSoC AI Kit. Both sides are needed for proper mechanical support.

3

Mount & Power On

Flash your firmware onto the host board. Mount the LMT extension board. Apply power and verify data uploads in the cloud dashboard.

Assembly Result

E84 Kit — assembled

PSoC 6 Kit — assembled

Support

Troubleshooting

Issue	Tool	Action
No data in cloud	UART debug header	Inspect serial communication between host and LMT module
Custom button/LED behavior	Tag-Connect pads	Reflash LMT module firmware via `TC2030-CTX`
Fault LED illuminated	Test points	Measure `3V3` vs `VDD` — check for short circuit
No cellular connection	Antenna	Verify U.FL connected to LTE port (not GPS)
Custom SIM not working	SDK docs	Toggle active SIM via SDK commands