Wurth Elektronik SETEBOS-I User manual

USER MANUAL
SETEBOS-I
2611011024020
VERSION 1.1
JULY 1, 2022

***************
MUST READ
Check for firmware updates
Before using the product make sure you use the most recent firmware version, data sheet
and user manual. This is especially important for Wireless Connectivity products that were
not purchased directly from Würth Elektronik eiSos. A firmware update on these respective
products may be required.
We strongly recommend to include in the customer system design, the possibility for a firmware
update of the product.

WIRELESS CONNECTIVITY & SENSORS
User manual Setebos-I
Revision history
Manual
version
FW
version
HW
version Notes Date
1.0 1.0 1.2 • Initial release June 2021
1.1 1.1 1.2
• Updated chapter Firmware
history
• Added helpful application notes
related to Setebos-I
July 2022
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User manual Setebos-I
Abbreviations
Abbreviation Name Description
EV (Board) Evaluation (Board) Proteus-III populated on motherboard with USB
interface for test and evaluation purpose.
I/O Input/output Pinout description.
RF Radio frequency Describes wireless transmission.
UART
Universal
Asynchronous
Receiver
Transmitter
Allows the serial communication with the module.
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User manual Setebos-I
Contents
Overview of helpful application notes 6
1 Introduction 8
1.1 Blockdiagram..................................... 9
1.2 Orderinginformation................................. 9
2 Electrical specifications 10
2.1 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Powerconsumption.................................. 11
2.3.1 Static..................................... 11
2.4 Radiocharacteristics................................. 11
2.5 Pincharacteristics .................................. 13
3 Pinout 14
4 Quick start 17
4.1 Minimalpinconnections ............................... 17
4.2 Antennaconnection ................................. 19
4.2.1 On-board PCB antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2.2 Externalantenna .............................. 19
5 Functional description 20
6 Host connection 21
7 Firmware updates 22
8 Firmware history 23
9 Design in guide 24
9.1 Advice for schematic and layout . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9.2 Dimensioning of the micro strip antenna line . . . . . . . . . . . . . . . . . . . . 26
9.3 Antennasolutions .................................. 27
9.3.1 Wireantenna ................................ 28
9.3.2 Chipantenna ................................ 28
9.3.3 PCBantenna ................................ 28
9.3.4 Antennas provided by Würth Elektronik eiSos . . . . . . . . . . . . . . 29
9.3.4.1 2600130021 - Himalia - 2.4 GHz dipole antenna . . . . . . . . . . 29
10 Reference design 30
10.1 EV-Board ....................................... 31
10.2 Tracedesign ..................................... 34
11 Manufacturing information 37
11.1 Moisture sensitivity level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
11.2 Soldering ....................................... 37
11.2.1Reflowsoldering .............................. 37
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11.2.2Cleaning................................... 39
11.2.3 Potting and coating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
11.2.4Othernotations ............................... 40
11.3 ESDhandling..................................... 40
11.4 Safety recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
12 Physical specifications 42
12.1 Dimensions ...................................... 42
12.2 Weight......................................... 42
12.3 Moduledrawing.................................... 43
12.4 FootprintWE-FP-4+ ................................. 44
12.5 Antennafreearea .................................. 44
13 Marking 45
13.1 Lotnumber ...................................... 45
13.2 General labeling information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
14 Information for explosion protection 47
15 References 48
16 Regulatory compliance information 49
16.1 ImportantnoticeEU ................................. 49
16.2 ImportantnoticeFCC ................................ 49
16.3 Conformity assessment of the final product . . . . . . . . . . . . . . . . . . . . 49
16.4 Exemptionclause................................... 49
16.5 EU Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
16.6 FCC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
16.7 IC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
16.8 FCC and IC requirements to OEM integrators . . . . . . . . . . . . . . . . . . . 51
16.8.1 Pre-certified antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
17 Important notes 54
17.1 General customer responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
17.2 Customer responsibility related to specific, in particular safety-relevant appli-
cations......................................... 54
17.3 Bestcareandattention ............................... 54
17.4 Customer support for product specifications . . . . . . . . . . . . . . . . . . . . 54
17.5 Productimprovements................................ 55
17.6 Productlifecycle ................................... 55
17.7 Propertyrights .................................... 55
17.8 General terms and conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
18 Legal notice 56
18.1 Exclusionofliability.................................. 56
18.2 Suitability in customer applications . . . . . . . . . . . . . . . . . . . . . . . . . 56
18.3 Trademarks ...................................... 56
18.4 Usagerestriction ................................... 56
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19 License terms 58
19.1 Limitedlicense .................................... 58
19.2 Usageandobligations ................................ 58
19.3 Ownership....................................... 59
19.4 Firmwareupdate(s).................................. 59
19.5 Disclaimerofwarranty ................................ 59
19.6 Limitationofliability.................................. 60
19.7 Applicable law and jurisdiction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
19.8 Severabilityclause .................................. 60
19.9 Miscellaneous..................................... 60
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Overview of helpful application notes
Application note ANR004 - Peripheral only mode
http://www.we-online.com/ANR004
The Bluetooth®LE modules Proteus-I,-II,-III provide the so called ¨peripheral only mode¨, that
supports a serial cable replacement by offering a transparent UART bridge functionality. This
document explains how to set the module into the corresponding operation mode and how to
establish a Bluetooth®LE connection to a Bluetooth®LE enabled central device.
Application note ANR006 - Proteus High throughput mode
http://www.we-online.com/ANR006
The Proteus-II and Proteus-III provide the so called ¨high throughput mode¨. This mode sends
several data packets per connection interval to increase the data throughput to a remote
Bluetooth®LE device. This application note describes how to set the radio module in this
mode, and how to test it in a module-to-module setup. It presents measurements and test
scenarios for throughput measurements.
Application note ANR008 - Wireless Connectivity Software Development Kit
http://www.we-online.com/ANR008
To ease the integration of the Würth Elektronik eiSos radio modules into an application, Würth
Elektronik eiSos offers the corresponding Software Development Kit (SDK) for most commonly
used host processors. This SDK contains drivers and examples in C-code to communicate
with the corresponding radio module. This application note shows which SDKs are available
and describes how to download and use them.
Application note ANR009 - Proteus-III Advanced developer guide
http://www.we-online.com/ANR009
This advanced developer guide covers the details on the Proteus-III radio module that are re-
quired to implement compatible App for smart devices. It covers the documentation on the
SPP-like Bluetooth®LE profile, the used protocols and data coding for arbitrary user payload.
In addition all information required to develop a custom firmware on the Proteus module hard-
ware platform are provided within.
Application note ANR010 - Range estimation
http://www.we-online.com/ANR010
This application note presents the two most used mathematical range estimation models, Friis
and two ray ground reflection, and its implementation in the range estimation tool of the RED-
EXPERT.
Application note ANR014 - Proteus-I,-II,-III Quickstart
http://www.we-online.com/ANR014
This application note describes how to set up a Bluetooth®LE connection between one of a
Proteus-I,-II,-III and a Bluetooth®LE enabled device, like a smart phone. Furthermore the data
transmission via Bluetooth®LE is presented.
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Application note ANR019 - Proteus-III UART vs. SPI - a comparison
http://www.we-online.com/ANR019
This application note shows the differences, advantages and disadvantages between the Proteus-
III module with UART interface compared to the module variant with SPI slave interface.
Application note ANR020 - Proteus-III Remote GPIO control
http://www.we-online.com/ANR020
The Proteus-III module offers six remote controllable GPIOs that can be configured as input,
output and PWM. This application note describes that feature which provides the possibility to
perform simple and quick hostless operation for simple applications.
Application note ANR026 - Proteus beacons
http://www.we-online.com/ANR026
Besides the standard Bluetooth®LE connection based data transmission, it is possible to trans-
mit data via Bluetooth®LE without an active connection in a broadcast message, called ¨Bea-
con¨. This application note describes what beacons are and how to they can be used.
Application note ANR027 - Bluetooth listing guide
http://www.we-online.com/ANR027
Every product containing Bluetooth®technology needs to be listed at the Bluetooth®SIG (spe-
cial interest group). This application explains the steps to be done to gain a Bluetooth®listing
for the end product using a Würth Elektronik eiSos Bluetooth®LE radio module.
Application note ANR030 - nRF Connect
http://www.we-online.com/ANR030
This application note gives a short overview about the options to create a custom firmware
for Würth Elektronik eiSos radio modules by using the hardware platform and the embedded
nRF5x system on chip. It presents options on firmware development environments and acces-
sories (like SDKs) for the use within the nRF5 ecosystem. The reader is informed on how to
access to a multitude of radio standards (like Bluetooth®LE, Bluetooth®MESH, Bluetooth®LE
Audio, Matter, Zigbee, Thread, Wirepas) for custom firmware developments whilst the hardware
platform can stay the same.
Application note ANR031 - Certification of custom modules
http://www.we-online.com/ANR031
This application note explains how certifications of a standard product can be used to gain
the certification of a customized product. This is done for firmware, that has been adapted by
Würth Elektronik eiSos, as well as for firmware written by customer.
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User manual Setebos-I
1 Introduction
The Setebos-I is a radio module for wireless communication between devices such as control
systems, remote controls, sensor nodes etc. Operating in the globally available 2.4 GHz license
free band, it combines two radio standards in a single hardware platform. The Setebos-I can
be configured to work with either Bluetooth®LE, or with WE-ProWare radio stack.
• When selecting the Bluetooth®LE standard, the Setebos-I acts as a Proteus-III radio
module.
• When selecting the WE-ProWare radio stack, the Setebos-I acts as a Thyone-I radio
module.
Depending on the selected standard, the corresponding module’s specifications apply. These
are available in the dedicated Proteus-III [1] and Thyone-I [2] user manuals.
Small dimensions (8 x 12 mm) comparable to a nano-sim card including an on-board PCB
antenna make Setebos-I ideal for small form factor design. The Setebos-I interfaces the host
system via serial UART.
Figure 1: Setebos-I
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1.1 Block diagram
Setebos-I
Shielding
Wireless MCU
High accuracy
crystal
RF Filter & 50Ω
matching
UART,
Reset, GPIO,
SWD
Power
supply
DCDC voltage
regulator
ARM Cortex M4,
Flash, RAM
2.4GHz
Radio core
50Ω port to λ/4
antenna
external wiring
according to trace
design
Antenna
Figure 2: Block diagram of the module
1.2 Ordering information
WE order code Description
2611011024020 Setebos-I Module, Tape & Reel
2611129024021 Mini evaluation board for Setebos-I
Table 3: Ordering information
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2 Electrical specifications
As not otherwise stated measured on the evaluation board Setebos-I-EV with T=25°C, VDDS=3V,
f=2.44GHz, internal DC-DC converter in use.
2.1 Recommended operating conditions
Description Min. Typ. Max. Unit
Ambient temperature -40 25 85 °C
Supply voltage (VDDS) 1.813 3.6 V
Supply rise time (0V to ≥1.8V) 60 ms
Table 4: Recommended operating conditions
The on-chip power-on reset circuitry may not function properly for rise times
longer than the specified maximum.
An instable supply voltage may significantly decrease the radio performance
and stability.
2.2 Absolute maximum ratings
Description Min. Typ. Max. Unit
Supply voltage (VDD) -0.3 +3.9 V
Voltage on any digital pin, VDD≤3.6V -0.3 VDD+0.3 V
Voltage on any digital pin, VDD≥3.6V -0.3 3.9 V
Input RF level 10 dBm
Flash endurance 10 000 Write/erase cycles
Table 5: Absolute maximum ratings
1Power fail comparator is set to 1.8V to avoid flash fail due to voltage drop.
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2.3 Power consumption
2.3.1 Static
Continuous test mode Min. Typ. Max. Unit
TX current consumption at +8 dBm 16.41mA
TX current consumption at 0 dBm 6.41mA
RX current consumption 6.251mA
TX current consumption at +8 dBm 18.92mA
TX current consumption at 0 dBm 82mA
RX current consumption 7.72mA
Sleep (system off mode) 0.4 µA
Table 6: Power consumption for 100% transmission/reception
2.4 Radio characteristics
Specifications of timing and RSSI value
Description Min. Typ. Max. Unit
RSSI accuracy valid range (±2dB) -90 -20 dBm
Enable TX or RX delay 140 µs
Enable TX or RX delay (fast mode) 40 µs
Disable TX delay 6 µs
Disable RX delay 0 µs
Table 7: Timing and RSSI
Description Typ. Unit
Output power conducted +6 dBm
Output power integrated antenna +4 dBm
Input sensitivity conducted (BER=1E-3, 1Mbps) -92 dBm
Input sensitivity integrated antenna (BER=1E-3, 1Mbps) -90 dBm
Table 8: Transmit and receive power
All transmit and receive power levels are measured on the evaluation board. The values already
include losses of transitions from module to motherboard to SMA or modules PCB antenna.
They are realistic values for the end application. Sensitivity in the table above is stated for the
1Transmitter only with DC/DC converter from nRF52 data sheet, CPU current not included.
2Full module power consumption.
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common used bit error rate of 0.1%. In the table below, the sensitivity is stated for a packet
error rate of 1% with a payload length of 38 byte at different data rates. The PER 1% is a harder
criteria resulting in 2 dBm less sensitivity.
Data rate [kbit/s] Typ. Unit
1000 ( PER 1% ) -90 dBm
2000 ( PER 1% ) -87 dBm
500 ( PER 1% ) -94 dBm
125 ( PER 1% ) -98 dBm
Table 9: Sensitivity at different data rates
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2.5 Pin characteristics
Specifications from nRF52 data sheet
Description Min. Typ. Max. Unit
Input high voltage 0.7 ×VCC VCC V
Input low voltage VSS 0.3 ×VCC V
Current at VSS+0.4 V, output set low, standard
drive, VDD ≥1.7V 1 2 4 mA
Current at VSS+0.4 V, output set low, high drive,
VDD ≥2.7 V 6 10 15 mA
Current at VSS+0.4 V, output set low, high drive,
VDD ≥1.7 V 3 mA
Current at VDD-0.4 V, output set high, standard
drive, VCC ≥1.7V 1 2 4 mA
Current at VDD-0.4 V, output set high, high
drive, VDD ≥2.7 V 6 9 14 mA
Current at VDD-0.4 V, output set high, high
drive, VDD ≥1.7 V 3 mA
Internal pull-up resistance 11 13 16 kΩ
Internal pull-down resistance 11 13 16 kΩ
Table 10: Pin characteristics
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3 Pinout
18
RPS 9
12
1318
B3
B6
ANT
RF
GND
SWDCLK
SWDIO
/RESET
BOOT
VDD
GND
WAKE_UP
/CTS
/RTS
URXD
UTXD
LED_2 LED_1
BUSY
MODE_1
B2
Figure 3: Pinout (top view)
No µC Pin Designation I/O Description
1ANT I/O RF connection to PCB antenna. (see sec-
tion 4.2 )
2RF I/O 50ΩRF connection through radio front end to
transceiver part of chipset. (see section 4.2 )
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3GND Supply Ground
4SWDCLK Input
Serial wire clock (SWD Interface). Uses inter-
nal pull down resistor. Do not connect if not
needed.
5SWDIO Input
Serial wire input/output (SWD Interface). Uses
internal pull up resistor. Do not connect if not
needed.
6 P0.18 /RESET Input Reset pin. A low signal resets the module. Uses
internal pull up resistor.
7 P0.02 BOOT Input
Boot pin. A low signal during and short after re-
set starts the module in OTA bootloader mode.
Uses internal pull up resistor1. Do not connect
if not needed.
8VDD Supply Supply voltage
9 P0.19 MODE_1 Input
Operation mode pin with internal pull down re-
sistor1during start-up. Low level or open: Nor-
mal Mode. High level: Peripheral only Mode.
Do not connect if not needed.
10 P0.22 BUSY Output
Indicates if module is busy with data transmis-
sion when using Peripheral only Mode/Trans-
parent Mode. Do not connect, if not needed.
11 P0.00/XL12LED_1 Output Indicates the module state (active high). Do not
connect if not needed.
12 P0.01/XL22LED_2 Output Indicates the module state (active high). Do not
connect if not needed.
13 P1.08 UTXD Output UART (Transmission)
14 P1.09 URXD Input UART (Reception). Uses internal pull up resis-
tor1.
15 P0.11 /RTS Output /RTS signal, if flow control is enabled. Static
low, otherwise. Do not connect if not needed.
16 P0.12 /CTS Input
/CTS signal, if flow control is enabled. Using
internal pull down1, otherwise. Do not connect
if not needed.
17 P0.03 WAKE_UP Input
Wake-up will allow leaving the system-off mode
or re-enabling the UART. Uses internal pull up
resistor1. Do not connect if not needed.
18 GND Supply Ground
B1 P0.09/NFC1 RPS Input
Radio protocol selection pin. A low level dur-
ing and shortly after reset starts the Proteus-III
function. A high level during and shortly after re-
set starts the Thyone-I function. Uses internal
pull down resistor1.
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B2 P0.10/NFC2 B2 GPIO Pin for remote GPIO access. Do not connect, if
not needed.
B3 P0.23 B3 GPIO Pin for remote GPIO access. Do not connect, if
not needed.
B4 P1.00 B4 GPIO Pin for remote GPIO access. Do not connect, if
not needed.
B5 P0.21 B5 GPIO Pin for remote GPIO access. Do not connect, if
not needed.
B6 P0.07 B6 GPIO Pin for remote GPIO access. Do not connect, if
not needed.
Table 11: Pinout
1Internal pull-ups or pull-downs are configured at startup by the firmware installed in the SoC. The pull up on the
/RESET pin cannot be disabled by firmware.
2Pins available to connect an external crystal in custom firmware. The standard firmware of Setebos-I does not
implement this function.
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4 Quick start
The Setebos-I module comes pre-flashed, tested and ready to use out-of-the-box. This chapter
describes the steps to quickly build a prototype system and test the capabilities of the module.
Depending on the radio protocol in use (Bluetooth Low Energy 5.1 or Proprietary), specific
quick start information and examples can be found on the Proteus-III [1] and Thyone-I [2] user
manuals.
4.1 Minimal pin connections
UTXD
URXD
RTS/CTS
/RESET
ANT
RF
Host
Controller
Setebos-I
VDD
1
6
3
5
WAKE_UP/BOOT/MODE_1
BUSY/LED_1/LED_2
7
8
4
SWDIO/SWDCLK
9
VDD
RPS
2
GND GND
1
Figure 4: Minimal pin connections
The above image shows the steps to be performed to integrate the Setebos-I into a custom
end device.
1. Supply voltage and ground
Connect the VDD and GND pins to supply the radio module with power.
2. Radio standard selection
Connect the RPS to the host controller to choose between the radio standards.
3. UART serial interface to the host
Connect the UART pins UTXD and URXD to the host to control the module via host.
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4. UART flow control
In case of fast UART baud rates higher than 115.2 kbaud the UART flow control is acti-
vated automatically. For lower data rates the flow control is inactive per default. If acti-
vated the /RTS and /CTS pins must be connected to the host controller.
5. Antenna connection
The antenna configuration must be performed. See chapter 4.2 .
6. Reset
Connect the /RESET pin to the host to allow a hard reset of the module.
7. (Optional) Wakeup from sleep, FOTA and mode selection
• Connect the WAKE_UP pin to the host controller to leave power saving modes, like
the sleep mode.
• Connect the BOOT pin to the host controller to set the module into boot mode to
enable firmware updates via radio.
• Connect the MODE_1 pin to the host controller to switch between command and
peripheral only mode.
8. (Optional) Status indication
Connect the BUSY,LED_1 and LED_2 pins to the host controller to allow easy indication
of the status.
9. (Optional) Flash and debug interface
In case of custom firmware development, it is recommended to additionally have the pins
SWDIO and SWDCLK accessible in order to support a fail-safe update of firmware. A
standard socket on the customer’s PCB for connecting a flash adapter can be useful for
debugging purposes (e.g. a JTAG 2*10 pin header with 2.54 mm pin-to-pin distance).
If the module has to be connected to a PC, a converter (TTL to RS-232 or TTL to USB) has to
be used. See chapter 3 for details on all pins. Please refer to the Setebos-I-EV schemes for a
reference design.
The logic level of the module is based on 3V. A 5V logic level must not be
connected directly to the module.
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