N5 ANT SoC Module Series
ANT® Operation (when loaded with the latest S210 or
S310 SoftDevice)
• 79 selectable RF channels (2402 to 2480 MHz)
• Simple to complex network topologies: peer-to-
peer, star, tree, star-to-star and more
• Broadcast, acknowledged, and burst data
communication modes
• Built-in device search and pairing
• Built-in interference handling and radio
coexistence management with application radio
disable requests and application flash write/erase
requests
• Enhanced ANT features
- Supports up to 15 logical channels each with
configurable channel periods (5.2ms - 2s)
- Advanced burst data transfer modes (up to
60kbps)
- Optional channel encryption mode (AES-128)
- Supports up to 8 public, private and/or
managed networks
- Advanced power management features to
optimize application power consumption
including Event Filtering and Selective data
updates
- Asynchronous transmit channel
- Fast channel initiation
ANT/BLUETOOTH® Low Energy Peripheral Operation
(when loaded with the latest S310 SoftDevice)
• ANT operation functions as S210
• BLUETOOTH 4.1 compliant low energy single-
mode protocol stack
- Link Layer
- L2CAP,ATT, and SM protocols
- GATT,GAP, and L2CAP APIs
- Peripheral and Broadcaster roles
- GATT Client and Server
- Full SMP support including MITM and OOB
pairing
Module Hardware
• Integrated PCB meander antenna
• On-board 32 kHz and 16 MHz crystal
clocks
• 1.8V to 3.6V supply voltage range
• DC/DC converter
• Operating temperature:
-25°C to +75°C (N5150 and N548)
-40°C to +85oC (N550)
• 24 GPIOs (LGA package)
• Programmable output per channel from
–20dBm up to +4dBm
• Excellent receiver sensitivity
-90dBm ANT mode
-93dBm BLE mode
• 1dBm resolution RSSI
• Total 256kB embedded flash memory
and 16kB/32kB RAM
• SPI, I2C and UART interface
• ARM SWD interface
• 14.0x9.8x2.0mm (LGA package)
• Drop-in compatible options with AP2/C7
modules
• Radio regulatory approval for major
markets
• BLUETOOTH SIG qualification
• RoHS compliant
Series Members
- N5150M8CD, N5150M4CD, N5150M5CD
- N550M8CC, N550M4CC
- N548M8CB, N548M4CB, N548M5CB
All these modules are pre-loaded with the S210
SoftDevice, the ANT-WP bootloader and an ANT
network processor application code
D00001598 Rev 2.2
Page 2 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
Contents
1 N5 ANT SoC Module Series ....................................................................................................................... 8
1.1 Nomenclature .............................................................................................................................. 8
1.2 Production Tracking Code ............................................................................................................. 9
1.3 Models ........................................................................................................................................ 9
1.4 N5 ANT SoC Module Starter Kit ................................................................................................... 10
2 Product Overview .................................................................................................................................... 11
2.1 Block Diagram ........................................................................................................................... 11
2.2 Pin-outs .................................................................................................................................... 11
2.3 N5 Module Preloaded Software ................................................................................................... 13
2.4 N5 Module Programming ............................................................................................................ 13
2.4.1 Programming via SWD Interface ................................................................................... 14
2.4.2 Programming Over the Air ............................................................................................ 14
2.4.3 Initializing the SoftDevice ............................................................................................. 14
2.4.4 Configuring the DC/DC Converter .................................................................................. 14
2.5 Design Considerations ................................................................................................................ 14
2.5.1 M8 Module Mounting .................................................................................................... 14
2.5.2 M4 Module Mounting .................................................................................................... 15
2.5.3 M5 Module Mounting .................................................................................................... 15
2.6 Assembly Considerations ............................................................................................................ 15
2.6.1 Moisture Control .......................................................................................................... 15
2.6.2 Solder Stencil Design of M8 Module ............................................................................... 16
2.6.3 Cleaning Process .......................................................................................................... 16
3 Regulatory Approvals and Compliances ................................................................................................ 17
3.1 United States ............................................................................................................................. 17
3.2 Canada ..................................................................................................................................... 17
3.3 European Economic Area ............................................................................................................ 18
3.4 Australia & New Zealand ............................................................................................................ 18
3.5 Japan ........................................................................................................................................ 18
3.6 BLUETOOTH Qualification ........................................................................................................... 18
4 Electrical Specifications .......................................................................................................................... 19
4.1 Absolute Maximum Ratings ......................................................................................................... 19
4.2 Recommended Operating Conditions ........................................................................................... 19
4.3 Industrial Temperature Range .................................................................................................... 19
4.4 Radio Operation Specifications and Antenna Characteristics .......................................................... 19
4.5 Electrical Specifications .............................................................................................................. 20
5 Mechanical Drawings .............................................................................................................................. 21
6 Support .................................................................................................................................................... 24
6.1 ANT Forum ................................................................................................................................ 24
6.2 Technical References ................................................................................................................. 24
N5 ANT SoC Module Series, Rev 2.2 Page 3 of 37
thisisant.com
6.3 ANT Developer’s Zone ................................................................................................................ 24
6.4 ANT and ANT+ Social Media ....................................................................................................... 25
Appendix A: Using the ANT Network Processor Configuration ..................................................................... 26
1. Pin Assignments in the ANT Network Processor Configuration ......................................................... 26
2. Asynchronous Serial Mode ............................................................................................................ 27
3. Byte Synchronous Serial Mode ...................................................................................................... 29
4. ANT-WP Bootloader Activation ...................................................................................................... 29
Using BOOT Pin ........................................................................................................................... 30
Using Serial Command ................................................................................................................. 30
5. DC/DC Configuration .................................................................................................................... 31
Appendix B: Using the ANT Bootloader for OTA Firmware Update ............................................................... 32
1. Operational Memory Layout .......................................................................................................... 32
2. Entering Bootloader Mode ............................................................................................................ 33
3. Bootloader ANT-FS Functionality ................................................................................................... 33
ANT-FS Configuration ................................................................................................................... 34
4. OTA Firmware Update Procedure .................................................................................................. 34
Example Usage ............................................................................................................................ 34
Image Activation ......................................................................................................................... 36
Appendix C: N5 Module Pre-Loaded Software Versions ................................................................................ 37
1. Key functional changes in N550 and N5150 ................................................................................... 37
2. Key functional changes in rev B over rev A .................................................................................... 37
Page 4 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
Figures
Figure 1: N5 ANT SoC Module Series Nomenclature ......................................................................................... 8
Figure 2: Production Tracking Code ................................................................................................................ 9
Figure 3: N5 ANT SoC Module Series Block Diagram ...................................................................................... 11
Figure 4: N5 M8 LGA Bottom View ................................................................................................................ 11
Figure 5: N5 M4 Bottom View ...................................................................................................................... 11
Figure 6: N5 M5 Module Bottom View ........................................................................................................... 12
Figure 7: Memory Map of the Preloaded Software .......................................................................................... 13
Figure 8: N5 M8 Module Mounting (all dimensions in mm) .............................................................................. 15
Figure 9: N5 M4 Module Mounting ................................................................................................................ 15
Figure 10: Solder Stencil Reference .............................................................................................................. 16
Figure 11: N5 M4 Module Typical Antenna Gain (dBi) ..................................................................................... 20
Figure 12: N5 M8 Mechanical Drawing .......................................................................................................... 21
Figure 13: N5 M4 Mechanical Drawing .......................................................................................................... 22
Figure 14: N5 M5 Mechanical Drawing .......................................................................................................... 23
Figure 15: Using ANT Network Processor ..................................................................................................... 26
Figure 16: N5 M4 ANT NP Configuration Async Serial Connection .................................................................... 28
Figure 17: N5 M4 ANT NP Configuration Byte Sync Connection ....................................................................... 29
Figure 18: ANT-WP Bootloader Operational Memory Layout ........................................................................... 32
Figure 19: ANT Bootloader Topology ............................................................................................................ 34
Figure 20: OTA Updater to PC Application .................................................................................................... 35
N5 ANT SoC Module Series, Rev 2.2 Page 5 of 37
thisisant.com
Tables
Table 1: N5 ANT SoC Module Series Offerings ................................................................................................. 9
Table 2: N5 ANT SoC Module Starter Kit ....................................................................................................... 10
Table 3: N5 ANT SoC Module Pin-Outs .......................................................................................................... 12
Table 4: Absolute Maximum Ratings ............................................................................................................. 19
Table 5: Recommended Operating Conditions ............................................................................................... 19
Table 6: N5 Module Antenna Gain ................................................................................................................ 19
Table 7: Current Consumption of Radio Operation ......................................................................................... 20
Table 8: Pin Assignments in ANT Network Processor Configuration ................................................................. 27
Table 9: Asynchronous Serial Mode Baud Rate Select ..................................................................................... 27
Table 10 Byte-Sync Mode Speed Selection .................................................................................................... 29
Table 11: ANT OTA Update Enable Command ............................................................................................... 30
Table 12: ANT OTA Update Enable Response ................................................................................................ 30
Table 11: ANT DC/DC Configuration Command .............................................................................................. 31
Table 12: ANT DC/DC Configuration Response .............................................................................................. 31
Table 13: Summary of the ANT-WP Bootloader Operational Memory Layout .................................................... 33
Table 14: ANT-WP Bootloader Default ANT Channel Parameters ..................................................................... 34
Table 15: ANT-WP Bootloader ANT-FS Device Identification Parameters .......................................................... 34
Table 16: N5 Module Versions and Factory Loaded Software .......................................................................... 37
Page 6 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
Notices and Restricted Use Information
Information contained in this document is provided only for your ("Customer" or “you”) convenience and may be
superseded by updates. It is your responsibility to ensure that your application meets with your specifications.
Garmin Canada Inc. ("GARMIN") makes no representations or warranties of any kind whether express or implied,
written or oral, statutory or otherwise, related to the information, including but not limited to its condition, quality,
performance, merchantability or fitness for purpose. GARMIN disclaims all liability arising from this information and
its use.
GARMIN does not assume any responsibility for the use of the described ANT module (“the Module(s)”). GARMIN
makes no representation with respect to the adequacy of the module in low-power wireless data communications
applications or systems. Any Products using the Module must be designed so that a loss of communications due to
radio interference or otherwise will not endanger either people or property, and will not cause the loss of valuable
data. GARMIN assumes no liability for the performance of products which are designed or created using the
Modules.
The Modules are not designed, intended, or authorized for use as components in systems intended for surgical
implant into the body, or other applications intended to support or sustain life, or for any other application in
which the failure of the Module could create a situation where personal injury or death may occur. If you use the
Modules for such unintended and unauthorized applications, you do so at your own risk and you shall indemnify
and hold GARMIN and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims,
costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of
personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
GARMIN was negligent regarding the design or manufacture of the Product.
The information disclosed herein is the exclusive property of GARMIN, and is not to be reproduced and/or
distributed without the written consent of GARMIN. No part of this publication may be reproduced or transmitted
in any form or by any means including electronic storage, reproduction, execution or transmission without the
prior written consent of GARMIN. The recipient of this document by its retention and use agrees to respect the
security status of the information contained herein.
GARMIN. believes the information contained herein is correct and accurate at the time of its release. However, the
information contained in this document is subject to change without notice and should not be construed as a
commitment by GARMIN. unless such commitment is expressly given in a covering document.
N5 ANT SoC Module Series, Rev 2.2 Page 7 of 37
thisisant.com
One Year Limited Warranty
This product is warranted to be free from defects in materials or workmanship for 1 year from the date of
purchase of the end customer. Within this period, Garmin Canada Inc. (”GARMIN”) will, at its sole option, replace
any products that fail in normal use. Such replacement will be made at no charge to distributors or companies who
purchase this product directly from GARMIN, provided the distributor or company shall be responsible for any
transportation cost. This warranty does not apply to: (i) cosmetic damage, such as scratches, nicks and dents; (ii)
damage caused by accident, abuse, misuse, water, flood, fire, or other acts of nature or external causes; (iii)
damage caused by service performed by anyone who is not an authorized service provider of GARMIN; (iv)
damage to a product that has been modified or altered without the written permission of GARMIN. In addition,
GARMIN reserves the right to refuse warranty claims against products or services that are obtained and/or used in
contravention of the laws of any country.
Replaced products have 1 year warranty as stipulated in this term.
THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER
WARRANTIES EXPRESS, IMPLIED, OR STATUTORY, INCLUDING ANY LIABILITY ARISING UNDER ANY WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, STATUTORY OR OTHERWISE.
IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL
DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE, OR INABILITY TO USE THIS PRODUCT OR FROM
DEFECTS IN THE PRODUCT.
GARMIN retains the exclusive right to replace (with a new or newly-overhauled replacement product) the device or
software or offer a full refund of the purchase price at its sole discretion. SUCH REMEDY SHALL BE THE SOLE AND
EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY.
To obtain warranty service, the distributor or company shall contact GARMIN for shipping instructions and a return
material authorization (RMA) tracking number. Securely pack the device and a copy of the original sales receipt,
which is required as the proof of purchase for warranty claims. Write the tracking number clearly on the outside of
the package. Send the device, freight charges prepaid, to GARMIN.
©2015-2018 Garmin Canada Inc. All Rights Reserved
Page 8 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
1 N5 ANT SoC Module Series
Based on Nordic Semiconductor’s nRF51422 SoC, the N5 ANT SoC module series offers support for both ANT®
and Bluetooth® low energy and enables both protocols to run concurrently, depending on the loaded protocol
stack.
The N5 ANT SoC module series starts with the M8 model in a 14.0mm x 9.8mm x 2.0mm LGA (Land Array Grid)
package. A compact design meeting the market requirements for small, light and wearable, the M8 model is a
turnkey system hardware solution including antenna, onboard 32 kHz and 16 MHz crystal clocks, DC/DC converter
and 24 GPIOs with 6 analogue inputs.
The N5 modules are pre-programmed with the following software components:
• S210 SoftDevice (scalable ANT protocol stack with max. 15 channels)
• ANT network processor application
• ANT-WP (Wireless Programming) bootloader
SoftDevices are protocol stack solutions from Nordic Semiconductor for the nRF51 SoCs. There are multiple
SoftDevice choices available from the Nordic Semiconductor’s web site. The ANT network processor application
provides the standard ANT serial interface front-end that is connectable to an external application controller. The
ANT-WP bootloader allows over-the-air updates of any software components on the N5 module.
The N5 module’s pre-programmed image can be easily replaced via the onboard SWD interface pins using off-the-
shelf ARM programming tools or over the air using the pre-loaded ANT-WP bootloader.
Pin compatible options for the 20mm x 20mm AP2 or C7 modules from Garmin Canada Inc. (formerly Dynastream)
are also available. In these M4 and M5 model options, N5 M8 models are soldered on carrier boards that are pin
compatible to the previous modules. Current AP2 or C7 module customers can easily use these models to evaluate
the hardware and upgrade their products.
The N5 module series, if loaded with the ANT and/or BLUETOOTH low energy stack has been certified to comply
with radio regulation or standards covering major markets include North America, Europe, Australia, New Zealand
and Japan. The N5 ANT SoC modules series has also been qualified by the BLUETOOTH SIG.
1.1 Nomenclature
Figure 1: N5 ANT SoC Module Series Nomenclature
N5 ANT SoC Module Series, Rev 2.2 Page 9 of 37
thisisant.com
1.2 Production Tracking Code
For technical support and customer service purposes, a production code of three characters is laser marked on the
RF shield as illustrated below. In the code, YW denotes production date code and R denotes module version.
Figure 2: Production Tracking Code
Please refer to Appendix C: N5 Module Pre-Loaded Software Versions for differences and important notes of each
version.
1.3 Models
Part Number
Connection
Chip
RAM Size
Preloaded Software
SoftDevice
ANT-NP
ANT-WP
N5150M8CD
LGA package,
31 pads, 24
GPIOs.
nRF51422-CFAC, V3
32k
S210 V5.0.0
BAW4.0
0B00
BFD2.00
B00
N550M8CC
nRF51422-CEAA, V3
16k
N548M8CB(1)
nRF51422-CEAA, V2
16k
S210 V4.0.1
BAW3.0
0B00
BFD1.00
B00
N5150M4CD
17 pins, SMT
mount, 13
GPIOs
nRF51422-CFAC, V3
32k
S210 V5.0.0
BAW4.0
0B00
BFD2.00
B00
N550M4CC
nRF51422-CEAA, V3
16k
N548M4CB(1)
nRF51422-CEAA, V2
16k
S210 V4.0.1
BAW3.0
0B00
BFD1.00
B00
N5150M5CD
20 pin Molex
connector.
Onboard JTAG
programming
connector. 13
GPIOs
nRF51422-CFAC, V3
32k
S210 V5.0.0
BAW4.0
0B00
BFD2.00
B00
N548M5CB(1)
nRF51422-CEAA, V2
16k
S210 V4.0.1
BAW3.0
0B00
BFD1.00
B00
Note 1: Applies to rev B. Rev A module are pre-loaded with S210 V3.0.0 and BAW2.02B00 ANT NP code.
Table 1: N5 ANT SoC Module Series Model List
Page 10 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
1.4 N5 ANT SoC Module Starter Kit
The N5 ANT SoC Module Starter Kit, ordering number “N5DK1”, contains all the pieces you need to start evaluation
and development using the N5 ANT SoC module, as well as the nRF51422 IC.
The kit contains the following hardware pieces as described in Table 2, with a pre-loaded application ready to be
demonstrated when opening the box. Additional reference application code is available on
https://www.thisisant.com/developer/components/n5/. Most of the parts are orderable individually to create a
more complex network.
Order Number
Part Description
Quantity
N5150M5CD*
Module with 20-pin Molex connector
2
ANTBAT2
Battery board with a Molex socket,
a reset button and a five-position
dip switch
1
ANTIO1
I/O board with a Molex connector, a
Molex socket, 4 LEDs and 4 buttons
1
ANTUIF1
USB Interface Board with a Molex
socket
1
Segger J-Link Lite Programmer
1
Note: Starter kits before the release of N5150M5CD contain N548M5CB instead.
Table 2: N5 ANT SoC Module Starter Kit
N5 ANT SoC Module Series, Rev 2.2 Page 11 of 37
thisisant.com
2 Product Overview
2.1 Block Diagram
Figure 3: N5 ANT SoC Module Series Block Diagram
2.2 Pin-outs
Figure 4: N5 M8 LGA Bottom View
Figure 5: N5 M4 Bottom View
Page 12 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
Figure 6: N5 M5 Module Bottom View
N5 M8
LGA Pad
N5 M4 Pin
N5 M5
Molex
Connector
nRF51422
Pin Name
Description
A2-6
4
19
GND
Power supply ground
B1
2
10
RST
/SWDIO
System reset. Also HW debug and flash
programming I/O
B2
P018
GPIO
B3
P020
GPIO
B4
P019
GPIO
B5, B6
3
1
Vcc
Power supply source
C1
5
6
SWDCLK
HW debug and flash programming I/O
C2
P013
GPIO
C3
P016
GPIO
C4
P022
GPIO
C5, C6
3
1
Vcc
Power supply source
D1
12
3
P012
GPIO
D2
11
4
P015
GPIO
D3
P025
GPIO
D4
6
17
P023
GPIO
D5
16
P021
GPIO
D6
10
7
P024
GPIO
E1
14
9
P009
GPIO
E2
15
14
P011
GPIO
E3
13
5
P006
GPIO / ADC input 7/ ADC reference
voltage 1
E4
20
P004
GPIO / ADC input 5
E5
9
11
P000
GPIO / ADC reference voltage 0
E6
8
13
P030
GPIO
F1
16
12
P008
GPIO
F2
17
2
P005
GPIO / ADC input 6
F3
1
8
P003
GPIO / ADC input 4
F4
18
P001
GPIO / ADC input 2
F5
7
15
P002
GPIO / ADC input 3
F6
P031
GPIO
Table 3: N5 ANT SoC Module Pin-Outs
N5 ANT SoC Module Series, Rev 2.2 Page 13 of 37
thisisant.com
2.3 N5 Module Preloaded Software
The N5 module is preloaded with the S210 SoftDevice, the ANT-WP bootloader, and the ANT Network Processor
(NP) code as illustrated in Figure 7: Memory Map of the Preloaded Software. Depending on the module revision,
the preloaded code varies. Please refer to Appendix C: N5 Module Pre-Loaded Software Versions.
• S210 SoftDevice - Refer to nRF51422 S210 SoftDevice Specification
• ANT-WP Bootloader - Refer to Appendix B: Using the ANT Bootloader for OTA Firmware Update
• ANT Network Processor Application - Refer to Appendix A: Using the ANT Network Processor
Configuration
Figure 7: Memory Map of the Preloaded Software
2.4 N5 Module Programming
The N5 ANT SoC module series supports two programming methods:
• Standard Serial Wire Debug (SWD) interface
• Over-The-Air (OTA) updates using the preloaded ANT-WP bootloader (Not available for N548 Rev A)
These two programming methods are complementary. While the ANT-WP bootloader offers the convenience of
programming wirelessly, it does consume some of the available application space. In case the space for the
bootloader must be reclaimed for a large application, programming via SWD interface would be the option.
The three software components (the SoftDevice, the bootloader and the application code) must be version
compatible to operate properly. Because each individual component can be reprogrammed, it is not safe to always
assume the default factory image on a module by reading the module revision mark and referring to the history of
Page 14 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
preloaded images as summarized in Appendix C: N5 Module Pre-Loaded Software Versions. When versions of the
software components are unclear, to ensure proper operation after reprogramming, it is recommended that the
module undergoes a full erasure (e.g. using the erase-all option in nrfjprog.exe/nRFgo Studio) and all desired
software components be explicitly programmed onto the module.
Some reference application code is provided on https://www.thisisant.com/developer/components/n5/.
2.4.1
Programming via SWD Interface
The N5 ANT SoC Module series supports the Serial Wire Debug (SWD) interface SWDCLK and SWDIO (refer to
Table 3). Programming and debugging of the module only require common available tools, such as the Keil
software development environment and the Segger J-Link programmer.
Please refer to “nRF51422 Evaluation Kit - Developing with the MDK-ARM Microcontroller Development Kit” from
Nordic Semiconductor for a specific reference on using the Keil software and J-Link programmer.
It is important to note that the BOOTLOADERADDR field in the UICR is set to the starting bootloader address
location by default. If the desired programmed application needs to reclaim the bootloader region and/or if
bootloader support is not required, then the BOOTLOADERADDR field in the UICR must be set to 0xFFFFFFFF. The
erase-all command via nrfjprog.exe/nRFgo Studio should reset this field. Please refer to Figure 7: Memory Map of
the Preloaded Software.
2.4.2
Programming Over the Air
The pre-programmed SoftDevice and ANT-WP bootloader in the N5 ANT SoC Module provides over-the-air
firmware update capability. The pre-programmed ANT Network Processor Application provides two methods of
entry into the bootloader mode in order to perform the software updates. SoftDevice, bootloader and application
code in the module can be changed or updated in this manner.
Please refer to Appendix B: Using the ANT Bootloader for OTA Firmware Update.
2.4.3
Initializing the SoftDevice
The N5 module comes with 50ppm onboard 32 kHz crystal. When initializing the SoftDevice, it is important to set
the crystal accuracy to be 50ppm. In the preloaded ANT Network Processor code, this line is used:
sd_softdevice_enable(NRF_CLOCK_LFCLKSRC_XTAL_50_PPM, softdevice_assert_callback)
2.4.4
Configuring the DC/DC Converter
The N5 module can make use of the DC/DC Converter on supported nRF51422 chip revisions. This can improve
power consumption under certain conditions.
sd_softdevice_enable(NRF_CLOCK_LFCLKSRC_XTAL_50_PPM, softdevice_assert_callback)
2.5 Design Considerations
RF performance is always affected by the environment. Good design makes a product less susceptive. Guidelines
provided in this section are for recommendations only. Users should thoroughly test their products in the intended
use cases and make necessary modifications and trade-offs.
For design assistance purpose, a STEP model package of all the three module types and an Altium library of the
M8 module are provided online.
2.5.1
M8 Module Mounting
Best RF performance is achieved by using 0.032" thickness FR4 under the module antenna and following the
guideline on Figure 8.
N5 ANT SoC Module Series, Rev 2.2 Page 15 of 37
thisisant.com
Figure 8: N5 M8 Module Mounting (all dimensions in mm)
2.5.2
M4 Module Mounting
Best possible RF performance is achieved when the module is placed such that the module antenna is protruding
out from the mating PCB into free space as Figure 9. Place no exposed copper underneath the M4 module. If
possible, place continuous ground plane under the module.
Figure 9: N5 M4 Module Mounting
2.5.3
M5 Module Mounting
The mating socket is Molex 52991-0208.
Note: The M5 module is provided for application prototyping and lab use. The M5 module should not be used to
evaluate the RF performance of the N5 module family.
2.6 Assembly Considerations
2.6.1
Moisture Control
The moisture control of the module is rated at level 1 defined by IPC/JEDEC J-STD-020. The modules do not
require special storage conditions provided:
• They are maintained at conditions equal to or less than 30 °C/85 % RH, and
• They are solder reflowed at a peak body temperature which does not exceed 260 °C
Page 16 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
To ensure good solderability of the PCB pads, it is highly recommended to always have the modules intended for
reflow well sealed when in storage.
2.6.2
Solder Stencil Design of M8 Module
The following reference stencil design is used to produce N5 M4 and M5 models.
Figure 10: Solder Stencil Reference
2.6.3
Cleaning Process
The module is made using no-clean solder paste. No-clean process is recommended.
N5 ANT SoC Module Series, Rev 2.2 Page 17 of 37
thisisant.com
3 Regulatory Approvals and Compliances
The N5 ANT SoC module series, when loaded with ANT and/or BLUETOOTH low energy stack, has received
regulatory approvals in the United States (FCC) and Canada (IC), and has been verified to conform to the
appropriate regulations in Europe, Australia and New Zealand, and Japan. The module series has been qualified by
BLUETOOTH SIG. Such approvals and qualification allow the user to place the module inside a finished product
and, in most cases, not require regulatory testing for an intentional radiator, provided no changes or modifications
are made to the module circuitry. This does not preclude the possibility that some other form of authorization or
testing may be required for the finished product. Changes or modifications could void the user’s authority to
operate the equipment. The end user must comply with all of the instructions provided by the Grantee, which
indicate installation and/or operating conditions necessary for compliance.
3.1 United States
The N5 ANT SoC module series has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one of the following
measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
The N5 module series complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
The N5 module series does not contain any user-serviceable parts. Unauthorized repairs or modifications could
result in permanent damage to the equipment, and void your warranty and your authority to operate this device
under Part 15 regulations.
The N5 module series is labelled with its own FCC ID, O6R2398 (note: First Character is the letter O, not the # 0.)
If the FCC ID is not visible when the module is installed inside another device, then the outside of the device into
which the module is installed must also display a label referring to the enclosed module. This exterior label can use
wording such as the following: “Contains Transmitter Module FCC ID: O6R2398” or “Contains FCC ID: O6R2398”.
Any similar wording that expresses the same meaning may be used.
3.2 Canada
The N5 ANT SoC module series complies with Industry Canada licence-exempt RSS standard(s). Operation is
subject to the following two conditions: (1) this device may not cause interference, and (2) this device must
accept any interference, including interference that may cause undesired operation of the device.
(Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence.
L'exploitation est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2)
l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.)
To comply with Industry Canada regulations, it is required that product containing the N5 module series display a
label referring to the enclosed module. This exterior label can use wording similar to the following: “Contains IC:
3797A-2398”
This information shall be affixed in such a manner as not to be removable except by destruction or defacement.
The size of the lettering shall be legible without the aid of magnification but is not required to be larger than 8-
point font size. If the device is too small to meet this condition, the information can be included in the user manual
upon agreement with Industry Canada.
Page 18 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
3.3 European Economic Area
N5 series modules are declared to be category 2 receivers in conformance with the essential
requirements and other relevant provisions of Directive 2014/53/EU and 2011/65/EU, as a low-
powered unlicensed transmitter:
IEC 60950-1:2005(2nd Edition) +
A1:2009 + A2:2013
EN 60950-1: 2006 + A11:2009 +
A1:2010 + A12:2011 + A2:2013
Information technology equipment – Safety – Part 1:
General requirements
EN 62479:2010
Assessment of the compliance of low power electronic and
electrical equipment with the basic restrictions related to
human exposure to electromagnetic fields (10 MHz to 300
GHz)
EN 300 328 v2.1.1 2016-11
Wideband transmission systems; Data transmission
equipment operating in the 2,4 GHz ISM band and using
wide band modulation techniques
EN 300 440 v2.1.1 2017-03
Short Range Devices (SRD); Radio equipment to be used
in the 1 GHz to 40 GHz frequency range
EN 301 489-1 v2.1.1 2017-02
EN 301 489-3 v2.1.1 2017-03
EN 301 489-17 v3.1.1 2017-02
ElectroMagnetic Compatibility (EMC) standard for radio
equipment and services; Part 1: Common technical
requirements; Part 3: Specific conditions for Short-Range
Devices (SRD) operating on frequencies between 9 kHz
and 246 GHz; Part 17: Specific conditions for Broadband
Data Transmission Systems
3.4 Australia & New Zealand
The N5 ANT SoC module series has been tested and found to comply with:
• AS/NZS 4268:2012 + A1:2013 Radio equipment and systems – Short range devices – Limits
and methods of measurement
• AS/NZS CISPR 22:2009 + A1:2010 Information technology equipment - Radio disturbance
characteristics - Limits and methods of measurement
The ACMA supplier code number is N20233
3.5 Japan
The N548, N550 and N5150 models have been granted type certificate (mark number R203-JN6049). Standard
applied:
Notification No. 88 of MIC 2004, 2.4GHz band wide-band low-power data communication system (item 19 of
Article 2 paragraph 1)
3.6 BLUETOOTH Qualification
The N5 ANT SoC module series is listed as a Bluetooth End Product on the Bluetooth SIG Qualified Design List
[Qualified Design ID 54799; Declaration ID is D022375]. Further use of this design to create subsequent
BLUETOOTH implementations can be achieved without further qualification provided that the resulting
implementation has no negative material impact on the BLUETOOTH performance or functionality of the design.
N5 ANT SoC Module Series, Rev 2.2 Page 19 of 37
thisisant.com
4 Electrical Specifications
4.1 Absolute Maximum Ratings
PARAMETER
TEST CONDITIONS
Min
Max
Unit
Supply voltage (VCC)
All supply pins must have the same voltage
-0.3
3.9
V
Voltage on any digital
pin
-0.3
VCC+0.3, ≤ 3.9
V
Storage temperature
range
-40
85
°C
ESD
All pads, according to human -body model,
JEDEC STD 22, method A114
4
kV
According to charged-device model, JEDEC
STD 22, method C101
500
V
Table 4: Absolute Maximum Ratings
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.
These are stress ratings only and functional operation of the device at these or any other conditions beyond those
indicated under Recommended Operating Conditions are not implied. Exposure to absolute-maximum-rated
conditions for extended periods may affect device reliability.
4.2 Recommended Operating Conditions
PARAMETER
Min
Max
Unit
Operating ambient temperature range, TA
-25
+75
°C
Operating supply voltage
1.8
3.6
V
Table 5: Recommended Operating Conditions
4.3 Industrial Temperature Range
The N550 modules are able to operate from -40oC to +85oC when the supply voltage is from 1.9V to 3.6V. For
details, please refer to “nRF51422 Specification for Industrial Temperature Range” from Nordic Semiconductor.
4.4 Radio Operation Specifications and Antenna Characteristics
nRF5142 Output Setting (dBm)
Peak Antenna Gain (dBi)
EIRP (dBm)
0
0
0
+4
0
+4
Table 6: N5 Module Antenna Gain
Page 20 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
nRF51422 Output Setting (dBm)
Typical Radio current (mA)*
0
10.5
+4
16.0
Table 7: Current Consumption of Radio Operation
* Note: For additional information regarding radio current, please refer to the nRF51422 product
specification by Nordic Semiconductor.
The following typical radiation pattern is recorded in an anechoic chamber at 2440MHz and 0dBm output following
the recommended mounting guideline.
Figure 11: N5 M4 Module Typical Antenna Gain (dBi)
To understand and properly use the radiation pattern for your design, please refer to the application note:
Interpreting RF Radiation Patterns.
4.5 Electrical Specifications
Please refer to the nRF51422 Product Specification by Nordic Semiconductor.
N5 ANT SoC Module Series, Rev 2.2 Page 21 of 37
thisisant.com
5 Mechanical Drawings
Figure 12: N5 M8 Mechanical Drawing
Page 22 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
Figure 13: N5 M4 Mechanical Drawing
N5 ANT SoC Module Series, Rev 2.2 Page 23 of 37
thisisant.com
Figure 14: N5 M5 Mechanical Drawing
Page 24 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
6 Support
The N5 ANT SoC module series uses nRF51422 from Nordic Semiconductor. Users can seek technical support from
Nordic Semiconductor, www.nordicsemi.com. Users can seek application support from Garmin Canada Inc.,
www.thisisant.com.
6.1 ANT Forum
Users are encouraged to participate in the ANT forum moderated by the application engineering team of Garmin
Canada Inc. for any engineering discussions. Joining the ANT forum is free and open at
http://www.thisisant.com/forum.
6.2 Technical References
Documents:
1. nRF51422 Product Specification, Nordic semiconductor
2. nRF51422 Specification for Industrial Temperature Range, Nordic Semiconductor
3. nRF51 Series Compatibility Matrix, Nordic Semiconductor
4. nRF51822 and nRF51422 Product Anomaly Notification (PAN-028), Nordic Semiconductor
5. nRF51 Series Reference Manual, Nordic Semiconductor
6. nRF51422 S210 SoftDevice Specification, Nordic Semiconductor
7. nRF51422 S310 SoftDevice Specification, Nordic Semiconductor
8. nRF51822 S110 SoftDevice Specification, Nordic Semiconductor
9. nRF51822 S120 SoftDevice Specification, Nordic Semiconductor
10. S130 nRF51822 SoftDevice Specification, Nordic Semiconductor
11. nRF51422 Evaluation Kit - Developing with the MDK-ARM Microcontroller Development Kit, Nordic
Semiconductor
12. N5 Starter Kit User Manual, Dynastream Innovations
13. ANT Message Protocol and Usage, Dynastream Innovations
14. Interfacing with ANT General Purpose Chipsets and Modules, Dynastream Innovations
15. ANT-FS Technical Specification, Dynastream Innovations
16. Application Note: Interpreting RF Radiation Patterns, Dynastream Innovations
17. Application Note: Over the Air Firmware Updates Using ANT-FS, Dynastream Innovations
Software:
18. S210 nRF51422 SoftDevice, Nordic Semiconductor
19. S310 nRF51422 SoftDevice, Nordic Semiconductor
20. S110 nRF51822 SoftDevice, Nordic Semiconductor
21. S120 nRF51822 SoftDevice, Nordic Semiconductor
22. S130 nRF51822 SoftDevice, Nordic Semiconductor
23. N5 Starter Kit SDK, Dynastream Innovations
24. N5 Starter Kit ANT IO Demo, Dynastream Innovations
25. OTA Updater – a wireless firmware update tool, Dynastream Innovations
26. ANTwareII – a system testing and debugging tool, Dynastream Innovations
27. ObservANT – an ANT debugging tool, Dynastream Innovations
Design models:
28. N5 M8 Altium library, Dynastream Innovations
29. N5 module STEP mode, Dynastream Innovations
The above documents and software are available at www.thisisant.com and/or www.nordicsemi.com. User
registration or supplier product code may be required.
6.3 ANT Developer’s Zone
ANT development software tools, application notes, reference designs and other public resources are found in the
ANT Developer’s Zone at http://www.thisisant.com/developer.
To begin development with the ANT+ interoperability, please become an ANT+ Adopter or ANT+ Alliance member
to obtain the access to the ANT+ Adopter Zone. ANT+ documents and design tools contained in the ANT+
N5 ANT SoC Module Series, Rev 2.2 Page 25 of 37
thisisant.com
Adopter zone include the ANT+ Device Profiles, ANT-FS specification, ANT software (PC/Mac) libraries with source
code, simulator tools (SimulANT+), embedded reference designs with source code, and more.
6.4 ANT and ANT+ Social Media
ANT is on the following social media sites,
YouTube: http://www.youtube.com/user/ANTAlliance
Twitter: http://twitter.com/ANTPlus
Facebook: https://www.facebook.com/thisisant
LinkedIn: http://www.linkedin.com/groups?gid=1379137
Page 26 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
Appendix A: Using the ANT Network Processor Configuration
N5 modules are preloaded with a default ANT network processor reference code image in the application code
space of the nRF51422. Using this configuration is similar to ANT legacy ICs or modules, as illustrated in the
diagram below. This reference code is available upon request.
ANT Network
Processor
ANT Engine
+
Radio
User
Application
MCU or PC
Async/Sync
Serial Interface
Sensor/
Display/
Storage
Figure 15: Using ANT Network Processor
With this configuration, the N5 M4/5 model is basically drop-in compatible with ANT11TS33M4/5IB,
ANTAP281M4/5IB and ANTC782M4/5IB modules.
For information regarding ANT network processor serial interfaces, please refer to document “Interfacing with ANT
General Purpose Chipsets and Modules”.
1. Pin Assignments in the ANT Network Processor Configuration
In the pre-loaded ANT network processor configuration, specific functions are assigned to the module pins. The
details are summarized below:
N5xxM8xx
LGA Pad
N5xxM4xx
Pin
N5xxM5xx
Molex
Connector
nRF51422
Pin Name
ANT Network Processor Pin Assignments
Pin Name
Async
Mode
Sync Mode
Function
A2-6
4
19
GND
GND
GND
GND
Power supply ground
B1
2
10
RST
/SWDIO
RST
RST
RST
Reset the device
B2
P018
Unused
Unused
Unused
Not used
B3
P020
Unused
Unused
Unused
Not used
B4
P019
Unused
Unused
Unused
Not used
B5, B6
3
1
Vcc
Vcc
Vcc
Vcc
Power supply source
C1
5
6
SWDCLK
Unused
Unused
Unused
Not used
C2
P013
Unused
Unused
Unused
Not used
C3
P016
Unused
Unused
Unused
Not used
C4
P022
Unused
Unused
Unused
Not used
C5, C6
3
1
Vcc
Vcc
Vcc
Vcc
Power supply source
D1
12
3
P012
RXD0/SIN
RXD0
SIN
Async -> Receive data
signal
Sync -> Data input
D2
11
4
P015
TXD0/SOUT
TXD0
SOUT
Async -> Transmit data
signal
Sync -> Data output
D3
P025
Unused
Unused
Unused
Not used
D4
6
17
P023
SUSPEND
/SRDY
SUSPEND
SRDY
Async -> Suspend control
Sync -> Serial port ready
D5
16
P021
Unused
Unused
Unused
Not used
D6
10
7
P024
BR2/SCLK
BR2
SCLK
Async -> Baud rate
selection
N5 ANT SoC Module Series, Rev 2.2 Page 27 of 37
thisisant.com
N5xxM8xx
LGA Pad
N5xxM4xx
Pin
N5xxM5xx
Molex
Connector
nRF51422
Pin Name
ANT Network Processor Pin Assignments
Pin Name
Async
Mode
Sync Mode
Function
Sync -> Clock output
signal
E1
14
9
P009
BR3/SPD_SEL
BR3
SPD_SEL
Async -> Baud rate
selection
Sync -> Clock speed
Selection
E2
15
14
P011
BOOT
BOOT
BOOT
Bootloader Startup.
if not used, tie to ground
or unconnected
E3
13
5
P006
BR1
BR1
Unused
Async -> Baud rate
selection
Sync -> Not used
E4
20
P004
Unused
Unused
Unused
Not used
E5
9
11
P000
PORTSEL
Tie to GND
Tie to VCC
Asynchronous or
synchronous port select
E6
8
13
P030
Unused
Unused
Unused
Not used
F1
16
12
P008
Unused
Unused
Unused
Not used
F2
17
2
P005
RTS/SEN
RTS
SEN
Async -> Request to send
Sync -> Serial enable
signal
F3
1
8
P003
Unused
Unused
Unused
Not used
F4
18
P001
Unused
Unused
Unused
Not used
F5
7
15
P002
SLEEP/ MRDY
SLEEP
MRDY
Async -> Sleep mode
enable
Sync -> Message ready
indication
F6
P031
Unused
Unused
Unused
Not used
Table 8: Pin Assignments in ANT Network Processor Configuration
Notes:
• Pins marked unused can be tied to GND
• Bit Serial Synchronous mode is not supported in the current version of the ANT Network Processor code
2. Asynchronous Serial Mode
The baud rate of the asynchronous communication is controlled by the speed select signals BR1, BR2 and BR3.
Please refer to the table below.
BR3
BR2
BR1
Baud Rate
0
0
0
4800
1
0
1
9600
0
1
0
19200
0
0
1
38400
1
1
1
57600
1
0
0
115200
Table 9: Asynchronous Serial Mode Baud Rate Select
Page 28 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
Asynchronous Serial Mode Connection Example
Figure 16: N5 M4 ANT NP Configuration Async Serial Connection
Notes:
• Module RXD and TXD connected directly to hardware USART of microcontroller.
• Switches on baud rate selection pins (BR1, BR2 and BR3) are for ease of use only. They can be
connected directly to the logic level of interest.
• RTS is hardware controlled on the N5 module and follows the RTS behaviour described in the nRF51
Series Reference Manual. In addition, RTS is toggled by the network processor application during
message processing. If HW flow control is not available on MCU, the software implemented flow control
must be able to manage serial communication flow control on a per byte level.
N5 ANT SoC Module Series, Rev 2.2 Page 29 of 37
thisisant.com
3. Byte Synchronous Serial Mode
The clock speed of the byte-Sync mode can be set to either 500KHz or 4MHz by setting BR3. Please refer to the
table below.
SPD-SEL
Byte-Sync Speed
0
500KHz
1
4MHz
Table 10 Byte-Sync Mode Speed Selection
Byte Synchronous Mode Connection Example
Figure 17: N5 M4 ANT NP Configuration Byte Sync Connection
Notes:
• Module SOUT, SIN, and SCLK connected directly to hardware USART of microcontroller.
• SEN needs to be on an interrupt capable I/O pin on the microcontroller. (Interrupt pins located on Port
1&2 on the MSP430F1232)
4. ANT-WP Bootloader Activation
The pre-programmed ANT Network Processor Application provides two methods of entry into the ANT-WP
bootloader mode. The methods are described in the following sections.
Page 30 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
Once the ANT-WP bootloader has been activated, the N5 module will remain in bootloader mode until one of the
following conditions are met:
• The existing network processor application is successfully replaced using the ANT-WP bootloader and the
new application is activated.
• The existing network processor application is not replaced. The ANT-WP bootloader successfully
disconnected from ANT PC OTA updater tool.
• The existing network processor application is not replaced. The ANT-WP bootloader reaches 2 min
inactivity timeout.
For more details on the ANT-WP bootloader functionality, please refer to Appendix B: Using the ANT Bootloader
for OTA Firmware Update.
Using BOOT Pin
A dedicated BOOT pin is assigned in the network processor application in order to activate the ANT-WP bootloader
code. If BOOT is held high upon power-up or start-up, the operation of the network processor code is bypassed
and the ANT-WP bootloader code is started.
The intent of this functionality is to assist in updating/replacing the default images on the N5 modules using the
OTA firmware update capability of the ANT-WP bootloader without requiring host microcontroller intervention.
This mode of operation is not intended to be used to upgrade the existing network processor application on the N5
module.
Using Serial Command
The following serial command message has been defined in the ANT network processor code. A host
microcontroller can issue this command to the ANT network processor application to put the N5 module into the
ANT-WP bootloader mode.
Sync
Length
MsgID
Payload
Chksum
0x02
0xE4
0x00
0x00
Table 11: ANT OTA Update Enable Command
After issuing the command, the following response is generated prior to activation of the ANT-WP bootloader.
Sync
Length
MsgID
Response
Chksum
0x04
0xE0
0x00
0xE4
0x00
0x00
Table 12: ANT OTA Update Enable Response
Note: Sync and Chksum values are defined in the document “Interfacing with ANT General Purpose
Chipsets and Modules”.
A response of 0x00 indicates successful pending ANT-WP bootloader activation. The N5 module enters the ANT-
WP bootloader mode shortly after sending the response. Serial communication to the module is not available when
the bootloader is active.
This mode of operation can be used to upgrade the existing ANT network processor application on the N5 module.
When exiting the ANT-WP bootloader mode, an ANT startup message will be generated by the network processor
application code. Refer to Start-up Message in the document “ANT Message Protocol and Usage”.
N5 ANT SoC Module Series, Rev 2.2 Page 31 of 37
thisisant.com
5. DC/DC Configuration
Note: this feature is not provided on the N548 models.
The pre-programmed ANT Network Processor Application provides a method of configuring the DC/DC converter
on the module via Serial Command. This allows modules featuring compatible ICs to use the DC/DC features of
the nRF51422. Please refer to the nRF51422 Product Specification v3.1 for details on the DC/DC (Sections 3.4 and
8.5 particularly). DC/DC should only be used on appropriate modules.
The following serial command message has been defined in the ANT network processor code. A host
microcontroller can issue this command to the ANT network processor application to configure the DC/DC
operation on the N5 module.
Sync
Length
MsgID
Payload
Chksum
0x02
0xE4
0x01
0x00 – DC/DC Disable
0x01 – DC/DC Enable
Table 13: ANT DC/DC Configuration Command
After issuing the command, the following response is generated.
Sync
Length
MsgID
Response
Chksum
0x04
0xE0
0x00
0xE4
0x01
0x00
Table 14: ANT DC/DC Configuration Response
Note: Sync and Chksum values are defined in the document “Interfacing with ANT General Purpose
Chipsets and Modules”.
A response of 0x00 indicates successful configuration of the DC/DC.
Page 32 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
Appendix B: Using the ANT Bootloader for OTA Firmware Update
The ANT bootloader supports over-the-air firmware update using ANT File Share (ANT-FS) technology. The
following features are supported:
• Application updates with or without existing application on the device
• Bootloader updates
• SoftDevice updates, including swaps from S210 to S310 and vice-versa
• Combined SoftDevice and bootloader updates
A primary ANT bootloader demo and reference code is provided in the nRF51 SDK. The N5 module (except for
N548 Rev A) is preloaded with the ANT-WP (Wireless Programming) bootloader that is specially made to work with
the ANT Network Processer code.
1. Operational Memory Layout
The UICR BOOTLOADERADDR is set to the starting address of the bootloader image. The operational memory
layout is shown in the figure below:
0x000000
SD Size
0x040000
SoftDevice
ANT-WP
Bootloader
Application
0x03B800
Code Region 1 Code Region 0
0x001000 MBR
Free
App Size
Bank 1 Bank 0
Figure 18: ANT-WP Bootloader Operational Memory Layout
• ANT-WP Bootloader: Occupies the reserved flash region between 0x3B800 – 0x40000. Implements an
ANT-FS client that uses the ANT SoftDevice stack to handle session based file transfers with an ANT-FS
N5 ANT SoC Module Series, Rev 2.2 Page 33 of 37
thisisant.com
host over-the-air. Responsible for receiving, processing, storing and activating received images in banked
regions Bank0/Bank1.
• Master Boot Record (MBR): Occupies region 0x0000 – 0x1000. Manages system startup and interrupt
forwarding to the bootloader and the SoftDevice. Used by the ANT-WP bootloader in order to execute
the SoftDevice and bootloader image swaps and verification. The MBR is non-updateable and is initially
programmed in along with the SoftDevice.
• SoftDevice: Occupies flash region starting at address 0x1000, with size depending on the specific
SoftDevice (S210/S310) used. Contains ANT protocol stack and SoC interface components used by the
ANT-WP bootloader and the ANT Network Processor application code.
• Application Code/Swap Region (Bank0/Bank1): The remaining space is divided into two memory
banks of equal size, BANK0 (starting after the SoftDevice) and BANK1 (ending before the bootloader). If
an application is present in the device, it is placed in the space right after the SoftDevice, and depending
on its size, may occupy part or the entirety of BANK0, and none, part or the entirety of BANK1. During
image reception, the ANT-WP bootloader uses the banked region(s) as storage space for the incoming
image.
The memory region allocation is summarized in the table below:
Usage
Memory ranges (Using S210
V4.0.1 or V5.0.0)
Memory ranges (Using S310
V2.0.0 or V3.0.0)
ANT-WP Bootloader
0x3B800 – 0x40000
0x3B800 – 0x40000
Application Code / Swap Space
0xD000 – 0x3B800
0x1D000 – 0x3B800
SoftDevice
0x1000 – 0xD000
0x1000 – 0x1D000
Master Boot Record (MBR)
0x0000 – 0x1000
0x0000 – 0x1000
Table 15: Summary of the ANT-WP Bootloader Operational Memory Layout
2. Entering Bootloader Mode
If there is no existing application on the device, the device will always start in bootloader mode. In the case of an
existing application being present, to enter bootloader mode, the application must request bootloader entry by
writing to a shared memory block field in the bootloader code region.
Application Programming Interfaces (APIs) used to request bootloader entry are provided in the example N5 ANT
Bootloader Demo code mentioned in the document “N5 Module Starter Kit User Manual”. The following files
provide the interface.
• ant_boot_settings.h
• ant_boot_settings_api.h
• ant_boot_settings_api.c
For more information regarding the shared memory block field between the bootloader code and the application,
please refer to the aforementioned “N5 Module Starter Kit User Manual”, under
Passing Information between
Application and Bootloader
.
3. Bootloader ANT-FS Functionality
Upon entering bootloader state, the ANT-FS-client code is initiated. ANT-FS is a session based transport
mechanism designed to handle data file transfers between two ANT enabled devices. A detailed description of
ANT-FS is available in the document “ANT-FS Technical Specification”. The specific details of the over-the-air
message exchange used for the update process as defined by ANT-FS are outlined in the application note “ANT AN
Over the Air Firmware Updates Using ANT-FS”, including the format of files exchanged.
Page 34 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
As indicated in the “N5 Module Starter Kit User Manual”, a customized PC implementation of an ANT-FS host used
to perform OTA updates (OTA Updater Tool) is provided. This tool automates all of the interactions between host
and client to for device information and transfer new images to the module.
Figure 19: ANT Bootloader Topology
ANT-FS Configuration
The following tables list the default ANT configurations and ANTFS device identification values used by the
preloaded ANT-WP bootloader and supplied OTA Updater tool in order to communicate with each other.
Parameter
Value
Channel Type
Master
Radio Frequency
2450 MHz
Network Key
ANT-FS Managed Network Key
Device Type
16
Transmission Type
5
Device Number
Least significant 2 bytes of the ANTFS_CLIENT_SERIAL_NUMBER
Channel Period
8192 (4Hz)
Table 16: ANT-WP Bootloader Default ANT Channel Parameters
Parameter
Value
ANTFS_CLIENT_MANUF_ID
255. Reserved as development ID.
ANTFS_CLIENT_DEV_TYPE
1
ANTFS_CLIENT_SERIAL_NUMBER
Least 4 significant bytes of device identifier in FICR, DEVICEID[0]
ANTFS_CLIENT_NAME
“ANTFS OTA Update”
Table 17: ANT-WP Bootloader ANT-FS Device Identification Parameters
ANT-FS authentication method supported by the default ANT-WP bootloader is the PassThru mode. Pairing or
passkey authentication methods are not supported in the current version.
4. OTA Firmware Update Procedure
Before updating any image component of the N5 module, it is important to review the release notes and test all
image components for compatibility.
Example Usage
The following procedure is a basic example of how to use the provided ANT-WP bootloader code and OTA Updater
Tool PC application to perform an OTA firmware update.
Node A
OTA Updater
ANT-FS Client
(Master Endpoint)
ANT-FS Host
(Slave Endpoint)
N5 ANT SoC Module Series, Rev 2.2 Page 35 of 37
thisisant.com
Figure 20: OTA Updater to PC Application
1. Connect an ANT USB stick to the PC
2. Start the OTA Updater application. The status bar at the bottom should indicate “Ready”
3. Configure the Connection Settings. Use the configuration specified in Table 17: ANT-WP Bootloader
ANT-FS Device Identification Parameters.
a. Specifying the ANTFS_CLIENT_SERIAL_NUMBER (obtained by reading the DEVICE[0] FICR
field of the module) will allow the OTA Updater application to connect only to the specified
module.
b. Specifying 0 (wildcarding) will allow the OTA Updater application to connect to any module in
the bootloader state.
4. Configure the Authentication Settings. The ANT-WP bootloader uses pass-thru authentication by
default. Passkey authentication is not supported in this version.
5. Browse for the image to update, and make sure the corresponding checkbox is checked. Both binary
and hex formats are supported.
6. Initiate the bootloader mode on the target N5 module. Use the bootloader entry methods described in
Entering Bootloader Mode
section or
Bootloader Activation
of Appendix A: Using the ANT Network
Processor Configuration.
7. Click on “Connect to Device”. Once the bootloader is discovered, the Device Information panel will sho
w
information about the
current devi
ce, e.g., manufacture
r ID, product ID, serial number and versions of
the images currently installed on it.
Page 36 of 37 N5 ANT SoC Module Series, Rev 2.2
thisisant.com
8. Click on “Start Update”. The update process will begin.
9. When the update is complete, the status bar will indicate “Image upload complete. Image will be
activated, do not power down device”.
Image Activation
N5 module will remain in the bootloader mode if there is no valid existing application. Preservation of an existing
application code may not be guaranteed and can be overwritten by temporary banked data during ANT-FS file
transfer. Therefore, it is important to understand the conditions where this can occur.
• Attempting to update the SoftDevice will always invalidate an existing application image
• Attempting to update the bootloader or application, by default, will invalidate an existing application
image unless the current application notifies its current usage size using the shared memory block field
as described in the “N5 Module Starter Kit User Manual” under
Passing information between Application
and Bootloader
. However, if the passed in size value exceeds the size of a single bank region (see
Operational Memory Layout), the existing application image cannot be preserved across firmware
update.
• If the size of the image update file being transferred during the ANT-FS session exceeds the size of a
single bank region, the existing application image will be invalidated.
N5 ANT SoC Module Series, Rev 2.2 Page 37 of 37
thisisant.com
Appendix C: N5 Module Pre-Loaded Software Versions
Module Version
S210 Softv5.0.0Device
ANT-WP
Bootloader
ANT Network
Processor Code
N550 and N5150
V5.0.0 (AXX5.00B00)
BFD2.00B00
BAW4.00B00
N548 rev B
V4.0.1 (AXX4.00B00)
BFD1.00B00
BAW3.00B00
N548 rev A
V3.0.0 (AXX3.02B00)
None
BAW2.02B00
Table 18: N5 Module Versions and Factory Loaded Software
1. Key functional changes in N550 and N5150
• For S210 SoftDevice upgrade details, please refer to S210 v5.0.0 release note in the SoftDevice
package.
• For important details on upgrading the SoftDevice via ANT-WP Bootloader from v4.0.1 to v5.0.0,
please refer to the S210 v5.0.0 migration document in the SoftDevice package.
• ANT Network processor code BAW4.00B00 provides support for configuring the DC/DC converter.
2. Key functional changes in rev B over rev A
• For S210 SoftDevice upgrade details, please refer to S210 v4.0.1 release note in the SoftDevice
package.
• The ANT-WP bootloader code, when activated, provides over-the-air firmware update capability
using ANT File Share (ANT-FS) technology.
• ANT Network processor code BAW3.00B00 assigned a previously unused Pin to the new BOOT
function. The intent of BOOT function is to assist in updating/replacing the default images on the N5
modules using the ANT-WP bootloader without requiring host microcontroller intervention.
• The ANT network process application BAW3.00B00 changes the serial interface behaviour.
- For synchronous Serial Interface: the SPI rate has been changed from 4MHz to 500kHz when
SPD_SEL (BR3) is low and SPI rate from 500kHz to 4MHz when the pin is high. This change
makes it be compatible with AP2/C7 modules.
- Asynchronous Serial Interface: the RTS now toggles at the end of each message received to
indicate message processing