Wurth Elektronik Proteus-E User manual

PROTEUS-E/OPHELIA-I EVALUATION
BOARD USER MANUAL
FOR RADIO MODULES
EV Order Code Module order code Product Name
2612019024001 2612011024000 Proteus-e
2612019022001 2612011022000 Ophelia-I
VERSION 1.0
JANUARY 27, 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.

Revision history
Manual
version
HW
version Notes Date
1.0 1.0 • Initial version October 2021
PROTEUS-E/OPHELIA-I Evaluation board user manual version 1.0 © January 2022
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Abbreviations
Abbreviation Name Description
COM port Communication port
EV (Board) Evaluation (Board)
ESD Electro Static Discharge
FCC Federal Communications
Commission
FSE Field Sales Engineer Support and sales contact person responsible
for limited sales area
FTDI Future Technology
Devices International USB to serial converter chip
GND Ground
GPIO General Purpose
Input/Output
HIGH High signal level
JTAG Joint Test Action Group Flash und debug interface
Bluetooth LE Bluetooth Low Energy
LDO Low Dropout Low dropout voltage regulator
LED Light Emitting Diode
LFCLK Low frequency clock
LFXO Low frequency crystal
oscillator
LOW Low signal level
PC Personal Computer
PCB Printed Circuit Board
RF Radio frequency Describes everything relating to the wireless
transmission.
SMA Sub Miniature version A
SWD Serial Wire Debug Flash und debug interface
UART Universal Asynchronous
Receiver Transmitter Seriel communication with the radio module.
USB Universal Serial Bus
VDD Voltage Drain Drain Supply voltage
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Contents
1 Supported radio modules 5
2 Functional description 6
2.1 Takingintooperation............................... 6
3 Development board 7
3.1 Blockdiagram................................... 7
3.2 Jumpers...................................... 8
3.3 Connectors and pin headers . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3.1 CON1 .................................. 11
3.3.2 CON2 .................................. 11
3.3.3 CON3 .................................. 12
3.3.4 P3 .................................... 12
3.3.5 P4 .................................... 12
3.4 Buttons ...................................... 13
3.4.1 RESETbutton.............................. 14
3.5 Functionblocks.................................. 14
3.5.1 Powersupply .............................. 14
3.5.1.1 Bus powered, power supply through USB . . . . . . . . . . . . 14
3.5.2 P1 - Current measurement . . . . . . . . . . . . . . . . . . . . . . . 14
3.5.3 UARTviaUSB.............................. 14
3.5.4 UARTdirect ............................... 14
3.5.5 LFXOcrystal .............................. 14
3.5.6 Programming interface . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.6 Schematic..................................... 17
3.7 Layout....................................... 18
3.8 Billofmaterials.................................. 20
4 Regulatory compliance information 21
4.1 EuropeanConformity............................... 21
4.2 FCC ........................................ 21
4.3 Exemptionclause................................. 21
5 References 22
6 Important notes 23
6.1 General customer responsibility . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.2 Customer responsibility related to specific, in particular safety-relevant ap-
plications ..................................... 23
6.3 Best care and attention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.4 Customer support for product specifications . . . . . . . . . . . . . . . . . . 23
6.5 Productimprovements.............................. 24
6.6 Productlifecycle ................................. 24
6.7 Propertyrights .................................. 24
6.8 General terms and conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7 Legal notice 25
7.1 Exclusionofliability................................ 25
7.2 Suitability in customer applications . . . . . . . . . . . . . . . . . . . . . . . 25
7.3 Trademarks .................................... 25
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7.4 Usagerestriction ................................. 25
8 License terms 27
8.1 Limitedlicense .................................. 27
8.2 Usageandobligations .............................. 27
8.3 Ownership..................................... 28
8.4 Firmwareupdate(s)................................ 28
8.5 Disclaimerofwarranty .............................. 28
8.6 Limitationofliability................................ 28
8.7 Applicable law and jurisdiction . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.8 Severabilityclause ................................ 29
8.9 Miscellaneous................................... 29
PROTEUS-E/OPHELIA-I Evaluation board user manual version 1.0 © January 2022
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1 Supported radio modules
The evaluation board described in this manual can be used to evaluate the following prod-
ucts:
Order code Product Name Description
2612011024000 Proteus-e Bluetooth®LE 5.1 radio module with smart
antenna configuration
2612011022000 Ophelia-I Ophelia-I radio module with smart antenna
configuration
Order code Product Name
261201902x001 Proteus-e/Ophelia-I evaluation board
Table 1: Compatibility
For both order codes 2612019024001 (Proteus-e evaluation board) and
2612019022001 (Ophelia-I evaluation board), the board is equipped with the
Proteus-e Bluetooth 5.1 radio module. These modules have the same hard-
ware platform, based on Nordic nRF52805 chipset.
No micro-USB connection cable is delivered with the evaluation board.
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2 Functional description
The evaluation board offers the user the possibility to develop hard- and software for the
mounted radio module. It can be connected to an USB port of a PC.
For the connection to a micro controller system the development board is equipped with a
multi-pin connector that makes all pins of the radio module accessible. Jumpers allow the
module to be disconnected from components such as the USB interface which are not re-
quired.
Feel free to check our youtube channel:
www.youtube.com/user/WuerthElektronik/videos for video tutorials, hands-ons and webina-
rs relating to our products.
2.1 Taking into operation
First of all, the corresponding FTDI driver package (www.ftdichip.com/Drivers/VCP.htm) has
to be installed on your PC to communicate with the USB interface of the evaluation board.
Then place the jumpers of the evaluation board on their default location as shown in Figure 2 .
The next step is to connect the evaluation board to the PC using a USB-cable. In that way a
COM port can be detected and installed on your PC. Check the device manager to acquire
the COM port name of the evaluation board. A typical name is "COM12" in Windows sys-
tems or "/dev/ttyUSB0" in Linux systems.
The WE-SmartCommander or any other serial terminal program (like Hterm for Windows)
has to be run and the corresponding COM port has to be opened using the default settings
of the mounted radio module. After the module is powered through the USB jack or an al-
ternative power supply, the reset button should be pressed to ensure a clean start-up of the
module.
The evaluation board is equipped with the Proteus-e radio module (flashed
with Bluetooth®LE firmware). To turn it into an Ophelia-I module, the firmware
needs to be erased from the module using the programming interface (see
Chapter 3.5.6 ). To do that, please refer to Nordic instructions and re-
sources [1].
A module without firmware (Ophelia-I) or with firmware other than Proteus-e
cannot be taken into operation using the Smart Commander tool [4].
Please refer to the module reference manual to get the detailed module specific quick start
instructions [3] [2].
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3 Development board
3.1 Block diagram
USB
Voltage
regulator
FTDI USB
converter chip
Radio module
Connectors Buttons
Pin header
50Ω port to λ/4
antenna
Evaluation board
RF Filter &
50Ω matching Internal
Antenna
LEDs
External
Power
supply
Figure 1: Block diagram
By default, the internal PCB antenna is used on the evaluation board. For
details on connection of an external antenna, please refer to chapter 3.3.2 .
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3.2 Jumpers
Figure 2: Jumpers, default placement
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P1 Pin (Module Function) Jumper set
(default)
1,2 Current comsumption measurement bridge Yes
3,4 P0.12 (MODE_1) to CBUS1-FTDI No
5,6 P0.05 (GPIO_2) to CBUS2-FTDI No
7,8 P0.04 (/RTS) to /CTS-FTDI No
9,10 P0.14 (/CTS) to /RTS-FTDI No
11,12 P0.00 (LED_1) to LED_1 Yes
13,14 P0.01 (BUSY/UART-ENABLE) to LED_2 No
15,16 P0.16 (UTXD) to RXD-FTDI Yes
17,18 P0.18 (URXD) to TXD-FTDI Yes
19,20 P0.20 (GPIO_1) to CBUS3-FTDI No
21,22 P0.21 (/RESET) to /DTR-FTDI No
Table 2: Jumper P1
P2 Function Jumper set (default)
1,2 LDO power supply Yes
1,2 External power supply No
3 Not connected
4 Not connected
Table 3: Jumper P2
By default, Jumper P2 Pin 1-2 is connected for internal LDO power supply. To
use external power supply Jumper P2 Pin 1-2 shall be removed. Pin headers
P3 and P4 shall be used to source the evaluation board.
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3.3 Connectors and pin headers
Figure 3: Connectors
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Connector Function
CON1 Micro-USB connector for host connection and VDD bus supply
CON2 SMA connector for external antenna
CON3 2×10 JTAG/SWD connector
P3 External power supply VDD (not mounted)
P4 External power supply GND (not mounted)
Table 4: Connector overview
To use external power supply Jumper P2 Pin 1-2 shall be removed. Pin head-
ers P3 and P4 shall be used to source the evaluation board.
By default, P3 and P4 are not mounted.
3.3.1 CON1
Connector CON1 is a micro-USB connector that enables connection to PC via standard
micro-USB cable.
CON1 Function
Micro-USB connector for host connection and VDD bus supply
3.3.2 CON2
Connector CON2 (SMA receptacle) is used to connect an external antenna. For example,
the 2.4 GHz antenna Himalia- 2600130021 can be used.
CON2 Function
Inner RF signal
Outer GND
The board supports 50 Ωconnection by just soldering/unsoldering one component to use
either module’s internal PCB antenna or to connect an external antenna.
In default state, the internal PCB antenna is used on the evaluation board.
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Figure 4: Capacitor connection to internal antenna
In the evaluation board default state, for usage of internal PCB antenna, C9 is populated
with a 22 pF capacitor 885012005027, and C6 is left unpopulated.
Figure 5: Capacitor connection to external antenna
In order to use the external antenna for long range tests, capacitor C6 has to be populated
with a 22 pF capacitor 885012005027 and C9 shall be removed.
3.3.3 CON3
Connector CON3 is the JTAG debugging interface.
CON3 nRF52805 Function
1VDD
7SWDIO SWDIO
9SWCLK SWCLK
15 P0.18 RESET
4,6,8,10,12,14,16,18,20 GND
2,3,5,11,13,17,19 Not connected
Table 5: Connector CON3
3.3.4 P3
Pin header P3 is a 3x2 pin header with MOD_VDD connection. P3 shall be used for external
power supply.
3.3.5 P4
Pin header P4 is a 3x2 pin header with GND connection. P3 shall be used for external power
supply.
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3.4 Buttons
Figure 6: Buttons
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3.4.1 RESET button
Internally the active low reset input of the micro processor is connected via a RC combination
with the power supply to ensure a proper startup of the module. The module provides a
/RESET pin that is connected to this button so that the module can be restarted properly.
The module provides an internal pull-up resistor. Please refer to the module specific manual
for detailed information [3] [2].
3.5 Function blocks
3.5.1 Power supply
3.5.1.1 Bus powered, power supply through USB
The development board can be run via USB. The integrated voltage regulator reduces the
connected USB voltage 5 V down to 3 V and supplies the remaining parts of the circuit. If
the evaluation board is power sourced the power Power LED lights up.
3.5.2 P1 - Current measurement
By default, the jumper P1 pin 1-2 is set for normal operation. If a current meter is connected
in place of the jumper, the power consumption of the radio module can be measured.
If the meter is not attached and the bridge is not set, the module will not receive a supply
voltage. However, the power Power LED may be active, as it is connected prior to the current
measurement bridge in order not to distort the module’s power consumption.
3.5.3 UART via USB
The UART of the module can be connected to the USB converter by setting the bridge P1.
In this case it is available on the USB jack. With help of the installed FTDI-driver the PC will
provide a virtual COM port which can be used to communicate with the module.
The USB cable length must not exceed 3 meters.
3.5.4 UART direct
If a micro-controller is to be connected to the module, remove the jumpers 11-12,15-16, 17-
18 on P1. The UART of the host micro controller can be attached directly on the pin header
P1 (all even numbered pins). The module RXD line must be handled accordingly by your
host (i.e. pulled up while inactive and during module boot-up). The host must obey the I/O
level incompatibility values stated in the module’s manual.
3.5.5 LFXO crystal
For higher LFCLK accuracy (better than ±500 ppm) a low frequency crystal oscillator of
32.768 kHz (LFXO) shall be used. A crystal, 3.2 ×1.6 mm package, for example 830009706,
can be placed on the evaluation board to position Q2. The needed load capacitance can be
reached with capacitors C31 and C41, 0402 package.
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In default state, a crystal oscillator is not mounted on the evaluation board.
If the jumpers P1 pin 11-12, 13-14 are set, the radio chip nRF52805 pin P0.00 and P0.01
are connected to LED_1 and LED_2 on evaluation board through 0 Ωresistors R6 and R11
respectively.
If a LFXO is mounted to the evaluation board the resistors R6and R11 shall be demounted,
capacitors C31 and C41 shall be mounted.
Figure 7: LFXO mounting
The input capacitance of the pin P0.00 and P0.01 are 4 pF. The values of C31 and C41 can
be calculated as follows.
The load capacitance Clof LFXO calculates as
Cl=C31l∗C41l
C31l+C41l
if we assume that C31l=C41l.
Cl=C31l
2=C41l 2
Whereas,
C31l=C31 + CXL2+CP CB
C41l=C41 + CXL2+CP CB
With this, C31 and C41 calculate as
C31 = 2 ·Cl−CX L1−CP CB
C41 = 2 ·Cl−CX L2−CP CB
whereas
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Cl= Load capacitance of LFXO crystal
CXL1= Input capacitance of pad LED_1 (4 pF)
CXL2= Input capacitance of pad LED_2 (4 pF)
CP CB = Parasitic capacitance of PCB
Parasitic capacitance CP CB can vary depending on design and track length. It can vary
from 0.5 pF to 2 pF.
For the crystal 830009706 with a load capacitance Clof 9 pF and a parasitic capacitance
CP CB of 2 pF, the value of C31 and C41 results in 12 pF, which was also tested on the eval-
uation board.
Depending on parasitic capacitance of host PCB, a capacitance of 12 pF may be a good
starting value for C31 and C41.
Using standard firmware with Proteus-e, the external crystal is not needed. To
enable use of the LFXO a custom firmware is required.
3.5.6 Programming interface
The evaluation board provides a 2×10 pin connector to connect directly to a SWD flash
adapter used for development. Please take care of the correct mounting of the flash adapter.
The recommended flash adapter is one of the "Segger J-Link" family.
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3.6 Schematic
n.m.
n.m. n.m.
GND GND
TLV1117LV
GND
1µF100nF
GND GND
100nF
GND
n.m.
GND
7427927311
red
GND
GNDGNDGND
100nF
GND
10R
10R
10pF
10pF
GND GND
7427927311
100nF
GND
100nF
GND
100nF1µF
GNDGND
10R 10R
GND
n.m.
n.m.
n.m.
GND GND
10R
10R
GND
261201102X000
22pF
n.m.
GND
GND
GND
430152043826
60312102114405
Micro_USB
n.m. n.m.
yellow
GNDGND
1K5R
blue
1K5R
1K5R
GND
0R
0R
82400152
DFLS130L-7
01x04
10R
n.m.
Q2
C41 C31
ADJ
IN OUT
OUT
IC2
C2C3C4
T1
L2
LED3
C11
R4
R5
C13
C14
L5
C12
C16
C1C5
R8 R9
C6
C7
C8
R3
R10
1 3 5 7 9
11
2 4 6 8 10 12
13 14 15 16 17 18 19 20
CON3 02x10
4 5 6
B3
2
8
B4
7
1
15 11 12 13
3
B2
9
10
B1
14
ANT RF SWDCLK SWDIO P0.21/nRESET P0.12
VDD
P0.05/AIN3
GND
GND
GND
GND
P0.04/AIN2
P0.00/XL1 P0.01/XL2
P0.16 P0.18 P0.20
P0.14
MOD1
C9
C10
4 3
2 1
S3
2 1*2
CON2
IC1 FT231XQ
GND
3
GND
13
CBUS3 16 CBUS2 7 CBUS1 14 CBUS0 15
RI# 2
DCD# 5
DSR# 4
DTR# 18
CTS# 6
RTS# 19
RXD 1
TXD 17
VCCIO
20
VCC
12
USBDM
9
USBDP
8
RESET#
11
3V3OUT
10
GND
EP
GND 5
ID 4
D+ 3
D- 2
VBUS 1
SHIELD SHELL*4
CON1
P3
1 2 3 4 5 6
P4
1 2 3 4 5 6
TP1 TP2 TP3 TP4
TP5 TP6
TP9 TP10 TP11 TP12
TP13 TP14
TP16
TP17
TP18 TP19
TP7 TP8
LED1
R7
LED2
R1
R2
R6
R11
5
1*2
3*2
2
D3
D1
P2
1
2
3
4
R12
R13
P1
02x11
1
3
5
7
9
11
2
4
6
8
10
12
13 14
15 16
17 18
19 20
21 22
VDD
VDD
P0.14
P0.14
RXD_FTDI
RXD_FTDI
GND
GND
5V0
5V0
D+
D+
D-
D-
3V3_OUT
SWDIO SWDIO
SWDIO
SWDCLK SWDCLK
SWDCLK
P0.18
P0.18
P0.16
P0.16
P0.20
P0.20
P0.04
P0.04
TXD_FTDI
TXD_FTDI
MOD_VDD
MOD_VDD
MOD_VDD
MOD_VDD
MOD_VDD
MOD_VDD
5V
5V
RTS_FTDI
RTS_FTDI
CTS_FTDI
CTS_FTDI
RESET
RESET
RESET
RESET
VDD_S
VDD_S
3V_LDO
3V_LDO
P0.12
P0.12
P0.05
P0.05
P0.00
P0.01
CBUS1
CBUS1
CBUS2
CBUS2
CBUS3
CBUS3CBUS3
P0.00_1
P0.00_1
P0.01_1
P0.01_1
3V
DTR_C0
DTR_C0
Pin Compatibility
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 B1 B2 B3 B4
Ophelia-I Proteus-e
Pin Nr.
ANT RF SWDIO SWDCLK P0.21/nRESET P0.12 VDD P0.05/AIN3 P0.04/AIN2 P0.14 P0.00/XL1 P0.01/XL2 P0.16 P0.18 P0.20 GND GND GND GND
ANT RF SWDIO SWDCLK /RESET MODE_1 VDD GPIO_2 /RTS /CTS LED_1 BUSY/ UART_ENABLE UTXD URXD GPIO_1 GND GND GND GND
Ophelia-I & Proteus-e Pinout
listed in Pin Compatibility Table *
*
Date: 15.12.2021 14:33 Sheet: 1/1
REV:
TITLE: Document Number:
261202902xxxx-HW-V2.0
USB
VDD
I/O1
GND
I/O2
USB-interface
Power-supply Ophelia-I / Proteus-e
RF-module
Debug-interface
RESET
Debuginterface USB I mess
Jumper
x
x
I mess
Figure 8: Reference design: Schematic
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The reference design is the same for the Proteus-e and Ophelia-I radio mod-
ules. The module’s pins on the schematic are named according to Ophelia-I
module. The pin compatibility table between Ophelia-I and Proteus-e is shown
in the schematic.
3.7 Layout
Figure 9: Top layer (top), bottom layer (bottom)
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