Wurth Elektronik Proteus-E User manual

USER MANUAL
PROTEUS-E
2612011024000
VERSION 1.1
MAY 24, 2023

***************
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 Proteus-e
Revision history
Manual
version
FW
version
HW
version Notes Date
1.0 1.0.0 1.0 • Initial release January
2022
1.1 1.0.0 1.0
• Added radiation characteristics in
chapter 17.3
• Updated layout in chapter 17.2
• Updated meta data
May 2023
?For firmware history see chapter Firmware history
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Abbreviations
Abbreviation Name Description
ADC Analog to Digital
Converter
ASCII
American Standard Code
For Information
Interchange
BER Bit Error Rate
BTMAC Bluetooth®conform MAC address of the
module used on the RF-interface.
CS Checksum Byte wise XOR combination of the preceding
fields.
DC Direct Current
DTM Direct Test Mode Mode to test Bluetooth®specific RF settings.
ESD Electrostatic Discharge
EV (Board) Evaluation (Board)
Proteus-e populated on motherboard with
USB interface for test and evaluation
purposes.
FCC Federal Communications
Commission
FEC Forward error correction Technique to correct received erroneous
radio messages.
FW Firmware
GAP Generic Access Profile
The GAP provides a basic level of
functionality that all Bluetooth®devices must
implement.
GND Ground Ground signal level that corresponds to 0 V.
GPIO General Purpose
Input/Output
HFXO High-Frequency Crystal
Oscillator
HIGH High signal level that corresponds to VDD.
IC Integrated Circuit
I/O Input/output Pinout description.
I2C Inter-Integrated Circuit
Bluetooth LE Bluetooth Low Energy
LED Light Emitting Diode
LDO Low Dropout Low dropout voltage regulator
LOW Low signal level that corresponds to 0 V
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LSB Least Significant Bit/Byte
MAC MAC address of the module.
MPS Maximum Payload Size
The maximum size of the payload, that can
be transmitted/received using one
Bluetooth®LE transaction.
MSB Most Significant Bit/Byte
MTU Maximum transmission
unit
Maximum packet size of the Bluetooth®
connection.
OS Operating System
Payload The intended message in a frame / package.
PCB Printed Circuit Board
PCN Product Change
Notification
PER Packet Error Rate
RAM Random Access Memory
RF Radio Frequency Describes wireless transmission.
RSSI Receive Signal Strength
Indicator
The RSSI indicates the strength of the RF
signal. Its value is always printed in two’s
complement notation.
Bluetooth
SIG
Bluetooth Special Interest
Group
Soft device Operating system used by the nRF52 chip.
SPI Serial Peripheral Interface Allows the serial communication with the
module.
SMA SubMiniature version A
SPP Serial Port Profile
SWD Serial Wire Debug
UART Universal Asynchronous
Receiver Transmitter
Allows the serial communication with the
module.
User settings
Settings to configure the module. Any relation
to a specific entry in the user settings is
marked in a special font and can be found in
chapter 8 .
UUID Universally Unique
Identifier
[HEX] 0xhh Hexadecimal
All numbers beginning with 0x are
hexadecimal numbers. All other numbers are
decimal, unless stated otherwise.
VDD Supply voltage
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VSWR Voltage Standing Wave
Ratio
WLCSP Wafer Level Chip Scale
Packaging
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Contents
Overview of helpful application notes 12
1. Introduction 14
1.1. Operational description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.1.1. Keyfeatures................................. 15
1.1.2. Connectivity................................. 16
1.2. Blockdiagram..................................... 17
1.3. Orderinginformation................................. 17
2. Electrical specifications 18
2.1. Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . 18
2.2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.3. Powerconsumption.................................. 19
2.3.1. Static..................................... 19
2.3.2. Dynamic................................... 21
2.4. Radiocharacteristics................................. 23
2.5. Pincharacteristics .................................. 24
3. Pinout 25
4. Quick start 27
4.1. Minimal pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.2. Antennaconnection ................................. 29
4.2.1. On-board PCB antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.2.2. Externalantenna .............................. 29
4.3. Powerup ....................................... 30
4.4. Quickstartexample.................................. 31
5. Functional description 33
5.1. Operationmodes................................... 33
5.2. Radiomodulestates................................. 33
5.3. State indication using the LED pins . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.4. Sleepmode...................................... 35
5.5. Identification of a Proteus-e device on the radio . . . . . . . . . . . . . . . . . . 36
5.6. Connection based data transmission . . . . . . . . . . . . . . . . . . . . . . . . 36
5.7. Advertising of custom data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.7.1. Restrictions ................................. 39
5.7.2. Application of custom advertising and scan response data . . . . . . . 39
5.8. Energy-efficient distance estimation solutions . . . . . . . . . . . . . . . . . . . 40
5.9. Configure the module for low power consumption . . . . . . . . . . . . . . . . . 40
5.10. Start the direct test mode (DTM) . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.11. Usingthe2MBitphy................................. 42
6. Host connection 44
6.1. Serialinterface:UART................................ 44
6.1.1. Resetbehavior ............................... 44
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7. The command interface 45
7.1. Setupconnections .................................. 47
7.1.1. CMD_CONNECT_IND . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.1.2. CMD_SECURITY_IND . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.1.3. CMD_CHANNELOPEN_RSP . . . . . . . . . . . . . . . . . . . . . . . 47
7.1.4. CMD_DISCONNECT_REQ . . . . . . . . . . . . . . . . . . . . . . . . 48
7.1.5. CMD_DISCONNECT_IND . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.1.6. CMD_PHYUPDATE_REQ . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.1.7. CMD_PHYUPDATE_IND . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.1.8. CMD_GETBONDS_REQ . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7.1.8.1. Example1................................ 50
7.1.9. CMD_DELETEBONDS_REQ . . . . . . . . . . . . . . . . . . . . . . . 51
7.1.9.1. Example1................................ 51
7.1.9.2. Example2................................ 52
7.1.10. CMD_ALLOWUNBONDEDCONNECTIONS_REQ . . . . . . . . . . . . 52
7.2. Transmit and receive data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.2.1. CMD_DATA_REQ.............................. 53
7.2.2. CMD_TXCOMPLETE_RSP . . . . . . . . . . . . . . . . . . . . . . . . 53
7.2.3. CMD_DATA_IND .............................. 53
7.3. Configuring the module and modifying the device settings . . . . . . . . . . . . 55
7.3.1. CMD_SET_REQ .............................. 55
7.3.1.1. Example1................................ 56
7.3.1.2. Example2................................ 56
7.3.2. CMD_GET_REQ .............................. 57
7.3.2.1. Example1................................ 57
7.3.3. CMD_SETRAM_REQ ........................... 58
7.3.3.1. Example1................................ 58
7.3.4. CMD_GETRAM_REQ ........................... 59
7.3.4.1. Example1................................ 59
7.4. Managethedevicestate............................... 60
7.4.1. CMD_GETSTATE_REQ . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.4.1.1. Example1................................ 60
7.4.2. CMD_RESET_REQ............................. 61
7.4.3. CMD_SLEEP_REQ............................. 61
7.4.4. CMD_SLEEP_IND ............................. 62
7.4.5. CMD_FACTORYRESET_REQ . . . . . . . . . . . . . . . . . . . . . . . 62
7.4.6. CMD_UARTDISABLE_REQ . . . . . . . . . . . . . . . . . . . . . . . . 63
7.4.7. CMD_UARTENABLE_IND . . . . . . . . . . . . . . . . . . . . . . . . . 64
7.5. Run the Bluetooth test modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
7.5.1. CMD_DTMSTART_REQ . . . . . . . . . . . . . . . . . . . . . . . . . . 65
7.5.2. CMD_DTM_REQ .............................. 65
7.5.2.1. Example: Transmission, 16 times 0x0F, channel 0 . . . . . . . . . 67
7.5.2.2. Example: Receiver, channel 0 . . . . . . . . . . . . . . . . . . . . . 68
7.5.2.3. Example: Transmission, carrier test, channel 0 . . . . . . . . . . . 68
7.5.2.4. Example: Set TX power to -4 dBm . . . . . . . . . . . . . . . . . . 69
7.5.2.5. Example: Set PHY to 2MBit mode . . . . . . . . . . . . . . . . . . 69
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7.6. Switching GPIOs by remote control . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.6.1. CMD_GPIO_LOCAL_WRITECONFIG_REQ . . . . . . . . . . . . . . . 70
7.6.1.1. Example: Configure two GPIOs to output high . . . . . . . . . . . . 71
7.6.2. CMD_GPIO_LOCAL_READCONFIG_REQ . . . . . . . . . . . . . . . 73
7.6.2.1. Example: Read the current GPIO configuration . . . . . . . . . . . 74
7.6.3. CMD_GPIO_REMOTE_WRITECONFIG_REQ . . . . . . . . . . . . . . 75
7.6.3.1. Example: Configure two GPIOs of the connected remote device
tooutputhigh.............................. 76
7.6.4. CMD_GPIO_REMOTE_READCONFIG_REQ . . . . . . . . . . . . . . 77
7.6.4.1. Example: Read the current GPIO configuration of the connected
remotedevice.............................. 78
7.6.5. CMD_GPIO_REMOTE_WRITE_REQ . . . . . . . . . . . . . . . . . . . 79
7.6.5.1. Example: Set a remote output GPIO to low . . . . . . . . . . . . . 80
7.6.6. CMD_GPIO_REMOTE_READ_REQ . . . . . . . . . . . . . . . . . . . 81
7.6.6.1. Example: Read the values of remote GPIOs . . . . . . . . . . . . . 82
7.6.7. CMD_GPIO_LOCAL_WRITE_REQ . . . . . . . . . . . . . . . . . . . . 83
7.6.7.1. Example: Set a local output GPIO to low . . . . . . . . . . . . . . . 84
7.6.8. CMD_GPIO_LOCAL_READ_REQ . . . . . . . . . . . . . . . . . . . . 85
7.6.8.1. Example: Read the values of local GPIOs . . . . . . . . . . . . . . 86
7.6.9. CMD_GPIO_REMOTE_WRITECONFIG_IND . . . . . . . . . . . . . . 87
7.6.9.1. Example: Two GPIOs have been configured by the connected re-
mote device to output high . . . . . . . . . . . . . . . . . . . . . . . 87
7.6.10. CMD_GPIO_REMOTE_WRITE_IND . . . . . . . . . . . . . . . . . . . 88
7.6.10.1. Example: GPIOs have been written via remote access . . . . . . . 88
7.6.11. CMD_GPIO_LOCAL_WRITE_IND . . . . . . . . . . . . . . . . . . . . 89
7.6.11.1. Example: GPIOs of the remote device have been written by its
localhost ................................ 89
7.7. Othermessages ................................... 90
7.7.1. CMD_ERROR_IND............................. 90
7.8. Messageoverview .................................. 91
8. UserSettings - Module configuration values 94
8.1. FS_DeviceInfo: Read the chip type and OS version . . . . . . . . . . . . . . . . 94
8.1.1. Example1.................................. 95
8.2. FS_FWVersion: Read the firmware version . . . . . . . . . . . . . . . . . . . . 96
8.2.1. Example1.................................. 96
8.3. FS_MAC: Read the MAC address . . . . . . . . . . . . . . . . . . . . . . . . . . 97
8.3.1. Example1.................................. 97
8.4. FS_BTMAC: Read the Bluetooth conform MAC address . . . . . . . . . . . . . 98
8.4.1. Example1.................................. 98
8.5. FS_SerialNumber: Read the serial number of the module . . . . . . . . . . . . 99
8.5.1. Example1.................................. 99
8.6. RF_DeviceName: Modify the device name . . . . . . . . . . . . . . . . . . . . . 100
8.6.1. Example1..................................100
8.6.2. Example2..................................100
8.7. RF_StaticPasskey: Modify the static passkey . . . . . . . . . . . . . . . . . . . 102
8.7.1. Example1..................................102
8.7.2. Example2..................................102
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8.8. RF_SecFlags: Modify the security settings . . . . . . . . . . . . . . . . . . . . . 103
8.8.1. Example1..................................104
8.8.2. Example2..................................104
8.9. RF_ScanResponseData: Modify the content of the scan response packet . . . 106
8.9.1. Example1..................................106
8.9.2. Example2..................................107
8.10. RF_AdvertisingData: Modify the content of the advertising packet . . . . . . . . 108
8.10.1.Example1..................................108
8.10.2.Example2..................................109
8.11. RF_AdvertisingTimeout: Modify the advertising timeout . . . . . . . . . . . . . 110
8.11.1.Example1..................................110
8.11.2.Example2..................................110
8.12. RF_AdvertisingInterval: Modify the advertising interval . . . . . . . . . . . . . . 111
8.12.1.Example1..................................111
8.12.2.Example2..................................111
8.13. RF_ConnectionInterval: Modify the connection interval . . . . . . . . . . . . . . 112
8.13.1.Example1..................................113
8.13.2.Example2..................................113
8.14. RF_TXPower: Modify the output power . . . . . . . . . . . . . . . . . . . . . . . 114
8.14.1.Example1..................................114
8.14.2.Example2..................................114
8.15. RF_SPPBaseUUID: Configure the SPP base UUID . . . . . . . . . . . . . . . . 116
8.15.1.Example1..................................116
8.15.2.Example2..................................116
8.16. RF_SPPServiceUUID: Configure the SPP service UUID . . . . . . . . . . . . . 117
8.16.1.Example1..................................117
8.16.2.Example2..................................117
8.17. RF_SPPRXUUID: Configure the SPP RX UUID . . . . . . . . . . . . . . . . . . 118
8.17.1.Example1..................................118
8.17.2.Example2..................................118
8.18. RF_SPPTXUUID: Configure the SPP TX UUID . . . . . . . . . . . . . . . . . . 119
8.18.1.Example1..................................119
8.18.2.Example2..................................119
8.19. RF_Appearance: Configure the appearance of the device . . . . . . . . . . . . 120
8.19.1.Example1..................................120
8.19.2.Example2..................................120
8.20. UART_ConfigIndex: Modify the UART speed . . . . . . . . . . . . . . . . . . . 121
8.20.1.Example1..................................123
8.20.2.Example2..................................123
8.21. CFG_Flags: Configure the module . . . . . . . . . . . . . . . . . . . . . . . . . 124
8.21.1.Example1..................................124
8.21.2.Example2..................................124
9. Timing parameters 128
9.1. Resetandsleep ...................................128
9.2. Bluetooth LE timing parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
9.3. Connection establishment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
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9.4. Connection based data transmission . . . . . . . . . . . . . . . . . . . . . . . . 129
9.4.1. Maximum data throughput . . . . . . . . . . . . . . . . . . . . . . . . . 129
10.Transparent mode 131
10.1. Reasons to use the transparent mode . . . . . . . . . . . . . . . . . . . . . . . 131
10.2. How to use the transparent mode . . . . . . . . . . . . . . . . . . . . . . . . . . 131
10.3. Moreinformation ...................................132
10.3.1.UART.....................................132
11.Remote GPIO control 134
11.1. Supported GPIO_IDs for remote and local control . . . . . . . . . . . . . . . . . 139
12.Customizing the Proteus-e 140
12.1. UUID..........................................140
12.2. Appearance......................................140
13.Custom firmware 141
13.1. Custom configuration of standard firmware . . . . . . . . . . . . . . . . . . . . 141
13.2. Customer specific firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
13.3. Customerfirmware..................................141
13.4. Contact for firmware requests . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
14.Firmware updates 143
14.1. Firmware flashing using the production interface . . . . . . . . . . . . . . . . . 143
15.Firmware history 144
16.Design in guide 145
16.1. Advice for schematic and layout . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
16.2. Dimensioning of the micro strip antenna line . . . . . . . . . . . . . . . . . . . . 147
16.3. Antennasolutions ..................................148
16.3.1.Wireantenna ................................149
16.3.2.Chipantenna ................................149
16.3.3.PCBantenna ................................149
16.3.4. Antennas provided by Würth Elektronik eiSos . . . . . . . . . . . . . . 150
16.3.4.1. 2600130021 - Himalia - 2.4 GHz dipole antenna . . . . . . . . . . 150
17.Reference design 151
17.1. EV-Board .......................................152
17.1.1.Schematic..................................152
17.2. Layout.........................................153
17.3. Internal antenna radiation characteristics . . . . . . . . . . . . . . . . . . . . . . 154
17.4. Tracedesign .....................................155
17.4.1. Simple short using internal antenna . . . . . . . . . . . . . . . . . . . . 156
17.4.2. 22 pF coupling capacitor using internal antenna . . . . . . . . . . . . . 157
17.4.3. 22 pF coupling capacitor using external antenna . . . . . . . . . . . . . 159
17.5. Antennafinetuning..................................160
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18.Manufacturing information 161
18.1. Moisture sensitivity level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
18.2. Soldering .......................................161
18.2.1.Reflowsoldering ..............................161
18.2.2.Cleaning...................................162
18.2.3. Potting and coating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
18.2.4.Othernotations ...............................163
18.3. ESDhandling.....................................163
18.4. Safety recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
19.Physical specifications 165
19.1. Dimensions......................................165
19.2. Weight.........................................165
19.3. Lightsensitivity ....................................165
19.4. Moduledrawing....................................166
19.5. FootprintWE-FP-4+ .................................167
19.6. Antennafreearea ..................................167
20.Marking 168
20.1. Lotnumber ......................................168
20.2. General labeling information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
21.Information for explosion protection 170
22.References 171
23.Bluetooth SIG listing/qualification 172
24.Regulatory compliance information 173
24.1. ImportantnoticeEU .................................173
24.2. ImportantnoticeFCC ................................173
24.3. Conformity assessment of the final product . . . . . . . . . . . . . . . . . . . . 173
24.4. Exemptionclause...................................173
24.5. EU Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
24.6. FCC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
24.7. IC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
24.8. FCC and IC requirements to OEM integrators . . . . . . . . . . . . . . . . . . . 175
24.8.1. OEM requirements: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
24.8.2. Pre-certified antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
24.8.3. Change in ID / Multiple listing . . . . . . . . . . . . . . . . . . . . . . . 177
24.9. TELEC radio law approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
24.9.1.Label.....................................178
24.9.2. Certified antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
25.Important notes 180
25.1. General customer responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
25.2. Customer responsibility related to specific, in particular safety-relevant appli-
cations.........................................180
25.3. Best care and attention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
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25.4. Customer support for product specifications . . . . . . . . . . . . . . . . . . . . 180
25.5. Productimprovements................................181
25.6. Productlifecycle ...................................181
25.7. Propertyrights ....................................181
25.8. General terms and conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
26.Legal notice 182
26.1. Exclusionofliability..................................182
26.2. Suitability in customer applications . . . . . . . . . . . . . . . . . . . . . . . . . 182
26.3. Trademarks ......................................182
26.4. Usagerestriction ...................................182
27.License terms 184
27.1. Limitedlicense ....................................184
27.2. Usageandobligations ................................184
27.3. Ownership.......................................185
27.4. Firmwareupdate(s)..................................185
27.5. Disclaimer of warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
27.6. Limitationofliability..................................186
27.7. Applicable law and jurisdiction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
27.8. Severabilityclause ..................................186
27.9. Miscellaneous.....................................186
A. Additional CRC8 Information 189
A.1. Example CRC8 Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
A.2. CRC8TestVectors..................................189
B. Example codes for host integration 190
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Overview of helpful application notes
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 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 ANR024 - Proteus-e Advanced developer guide
http://www.we-online.com/ANR024
This advanced developer guide covers the details on the Proteus-e 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 ANR025 - Proteus-e Quickstart
http://www.we-online.com/ANR025
The Proteus-e is a radio module based on the nRF52 Nordic Semiconductors SoC, which
provides various Bluetooth LE and has its focus on low power features. This Application Note
shows how easy the "transparent mode" can be used to quickly connect the Proteus-e in order
to communicate with a Bluetooth LE connection partner (e.g. a smart device). As second step
with more advanced functions, and therefore recommended to be used in applications, the
reader is introduced to the Command Mode that is also available to be used on the Proteus-e.
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 note 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
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Audio, Matter, Zigbee, Thread, Wirepas) for custom firmware developments whilst the hardware
platform can stay the same.
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1. Introduction
1.1. Operational description
The Proteus-e is a radio module for wireless communication between devices such as control
systems, remote controls, sensors etc. On the basis of Bluetooth®LE 5.1 [1], it offers fast
and secure data transmission of data packages between two parties (point to point topology).
Within these two parties, Proteus-e implements the Bluetooth LE role "peripheral". The other
device (e.g. a Proteus-III or a smart phone) must implement Bluetooth®LE role "central" and
the Bluetooth®LE profiles and characteristics Proteus-e is offering.
Proteus-e
Peripheral
Mobile
Central
Proteus-I,
-II,-III
Proteus-e
Peripheral
Proteus-e
Peripheral
Figure 1: Compatible central devices implementing the Bluetooth®LE profiles of Proteus-e
The Bluetooth®LE standard itself offers very high configurability, making the module suitable
for a wide range of applications. For example, the module can be configured to communicate
with external sensors, can use security configurations and can be optimized for low power
consumption. To fulfill the specific requirements of the application, a tailored firmware can be
developed on the basis of the Proteus-e hardware (see chapter 13 ).
Ultra small dimensions of 7 x 9 mm including a strongly miniaturized PCB antenna make the
Proteus-e ideal for small form factor design. It is possible to connect an external antenna, in
case higher radio ranges are required.
A serial interface (UART) is available for communication with the host system.
Figure 2: Proteus-e
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1.1.1. Key features
The Proteus-e offers the following key features:
SPP-like connection-based secured data transmission: The Proteus-e firmware implements
an SPP-like Bluetooth®LE profile that allows the bidirectional data transmission between
a Proteus-e module and one other Bluetooth®LE device implementing the SPP-like pro-
file. Secured connections allow the transmission of encrypted and authenticated data.
More than one connection at a time is not supported.
Remote GPIOs: The Proteus-e firmware allows to switch free module GPIOs via remote con-
trol. More information can be found in chapter 11 .
Advanced customization capabilities: The configurable UUID and appearance of the
Bluetooth®LE profile allow personalization of the Proteus-e to fuse with the user’s end
product. For more information see chapter 12 .
Custom advertising data: Furthermore, the complete content of the advertising and scan
response packet can be customer defined. With this, any beacon function can be realized.
For more information see chapter 5.7 .
Low power position sensing solutions: The TX power of any Proteus-e is always transmit-
ted during advertising. With this, distance estimation and position sensing solutions can
be realized conveniently.
Fast serial interface: The Proteus-e offers a UART-interface to communicate with a host us-
ing a user-defined baud rate and a simple command interface. Furthermore, the firmware
provides the so called "transparent mode" (see chapter 10 ), which is formerly known as
"peripheral only mode" in Proteus-I,-II and -III. This mode offers a transparent UART inter-
face such that an easy adaption of already existing custom hardware with the Bluetooth®LE
interface is enabled.
Modern microprocessor provided by Nordic Semiconductor nRF52 series: The heart of the
Proteus-e is a Bluetooth®LE chip of the nRF52 series offering high performance values
combined with low power consumption. It is a 64 MHz ARM Cortex-M4 CPU with 192kB
flash + 24kB RAM and up to 4 dBm output power.
Bluetooth®5 stack: The Bluetooth®5 stack enables fast and energy efficient data transmis-
sion using state-of-the-art technology of Nordic Semiconductors.
Flexible wired interfacing: The Proteus-e is equipped with extra pins suited for custom de-
vice/sensor connection. With help of these, a tailored firmware can be developed which
is optimized to the customer’s needs. The pins can be configured to various functions
such as UART, SPI, I2C, ADC and GPIO.
Additional Bluetooth®5 radio modes: The Proteus-e provides the advanced radio modes
2 MBit mode for faster data transmission. For more information, see chapter 5.11 .
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1.1.2. Connectivity
The Bluetooth®LE standard allows to setup a network with various Bluetooth®LE devices from
different manufacturers. To be able to communicate with Proteus-e devices, the SPP-like profile
must be known and implemented by all network participants.
The advanced developer guide of Proteus-e (application note ANR024 [4]) contains the design
data of the SPP-like profile, to implement it for example in smart phone apps.
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1.2. Block diagram
Proteus-e
Shielding
Wireless MCU
High accuracy
crystal
RF Filter & 50Ω
matching
UART,
Reset, GPIO,
SWD
Power
supply
DCDC voltage
regulator
ARM Cortex M4,
Flash, RAM
Radio core,
2.4GHz
Bluetooth 5.1
50Ω port to λ/4
antenna
Antenna
external wiring
according to trace
design
Figure 3: Block diagram of the module
1.3. Ordering information
WE order code Description
2612011024000 Proteus-e Bluetooth®LE Module, Tape & Reel
2612019024001 Proteus-e Evaluation Board
Table 1: Ordering information
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2. Electrical specifications
As not otherwise stated measured on the evaluation board of the Proteus-e with T = 25 °C,
VDD=3V, f=2.44GHz, internal DC-DC converter in use.
2.1. Recommended operating conditions
Parameter Min. Typ. Max. Unit
Ambient temperature -40 25 85 °C
Supply voltage (VDD) 1.813 3.6 V
Supply rise time (0V to ≥1.8 V) 60 ms
Table 2: Recommended operating conditions
The on-chip power-on reset circuitry may not function properly for rise times
longer than the specified maximum. A step increase in supply voltage of
300 mV or more, with rise time of 300 ms or less, within the valid supply range,
may result in a system reset.
An instable supply voltage may significantly decrease the radio performance
and stability.
2.2. Absolute maximum ratings
Parameter Min. Max. Unit
Supply voltage (VDD) -0.3 +3.9 V
Voltage on any digital pin (VDD<3.6 V) -0.3 VDD+0.3 V
Voltage on any digital pin (VDD≥3.6 V) -0.3 3.9 V
Input RF level 10 dBm
Flash endurance 10 000 Write/erase cycles
Table 3: Absolute maximum ratings
1Power fail comparator is set to 1.8 V to avoid flash fail due to voltage drop.
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