Freescale Semiconductor USB-KW40Z User manual

Freescale Semiconductor, Inc.
User’s Guide
© 2015 Freescale Semiconductor, Inc. All rights reserved.
1 About this guide
This manual describes the Freescale USB-KW40Z
development platform. The USB-KW40Z board is a small,
cost-effective evaluation and development board for
application prototypes and demonstration of the
MKW40Z160 SoC family of devices. This evaluation board
offers an easy-to-use mass-storage device mode flash
programmer, a virtual serial port, classic programming, and
run-control capabilities.
The MKW40Z160 SoC is an ultra low-power, highly
integrated single-chip device that enables Bluetooth Low
Energy (BLE) and/or IEEE®Std. 802.15.4/RF connectivity
for portable, extremely low-power embedded systems. The
MKW40Z160 SoC family integrates a radio transceiver
operating in the 2.36 GHz to 2.48 GHz range supporting a
range of FSK/GFSK and O-QPSK modulations, and ARM®
Cortex®- M0+ MCU, 160 KB flash memory and 20 KB
SRAM, BLE Link Layer hardware, 802.15.4 packet
processor hardware, and peripherals optimized to meet the
requirements of the target applications.
1.1 Audience
This manual is intended for system designers.
Document Number: USBKW40ZUG
Rev. 0, 10/2015
Contents
1. About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1.Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2. Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1.FCC guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2.Regulatory approval for Canada (IC RSS 210) . . . 3
2.3.Electrostatic discharge considerations . . . . . . . . . . 3
2.4.Disposal instructions . . . . . . . . . . . . . . . . . . . . . . . 3
3. USB-KW40Z overview and description . . . . . . . . . . 4
3.1.Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2.Board features . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.3.Serial and debug adapter . . . . . . . . . . . . . . . . . . . . 6
4. USB-KW40Z development board . . . . . . . . . . . . . . . 7
4.1.USB-KW40Z board overview . . . . . . . . . . . . . . . . 7
4.2.Functional description . . . . . . . . . . . . . . . . . . . . . . 9
4.3.Schematic, board layout, and bill of material . . . 16
5. PCB manufacturing specifications . . . . . . . . . . . . . . 21
5.1.Single PCB construction . . . . . . . . . . . . . . . . . . . 21
5.2.Panelization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.3.Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.4.Solder mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.5.Silk screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.6.Electrical PCB testing . . . . . . . . . . . . . . . . . . . . . 23
5.7.Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.8.Hole specification/tool table . . . . . . . . . . . . . . . . 23
5.9.File description . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6. Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Freescale USB Development Board
USB-KW40Z User's Guide

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Safety information
2 Safety information
2.1 FCC guidelines
This equipment is for use by developers for evaluation purposes only and must not be incorporated into
any other device or system. This device may not be sold to the general public. Integrators will be
responsible for reevaluating the end product (including the transmitter) and obtaining a separate FCC
authorization.
FCC approval of this device only covers the original configuration of this device as supplied. Any
modifications to this product, including changes shown in this manual, may violate the rules of the Federal
Communications Commission and Industry Canada and make operation of the product unlawful.
2.1.1 Labeling
FCC labels are physically located on the back of the board.
2.1.2 Operating conditions
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions:
• This device may not cause harmful interference.
• This device must accept any interference received, including interference that may cause undesired
operation.
2.1.3 Exposure limits
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
The antenna(s) used for this equipment must be installed to provide a separation distance of at least 8
inches (20 cm) from all persons.
2.1.4 Antenna restrictions
An intentional radiator is designed to ensure that no antenna other than that furnished by the responsible
party is used with the device. The use of a permanently attached antenna or of an antenna that uses a unique
coupling to the intentional radiator is considered sufficient to comply with the provisions of this Section.
The manufacturer may design the unit so that a broken antenna can be replaced by the user, but the use of
a standard antenna jack or electrical connector is prohibited. This requirement does not apply to carrier
current devices or to devices operated under the provisions of Sections 15.211, 15.213, 15.217, 15.219, or
15.221 of the IEEE Std. 802.15.4. This requirement does not apply to intentional radiators that must be
professionally installed, such as perimeter protection systems and some field disturbance sensors, or to
other intentional radiators which, in accordance with Section 15.31(d), must be measured at the installation
site. However, the installer is responsible for ensuring that the proper antenna is employed so that the limits
in this Part are not exceeded.

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Safety information
2.2 Regulatory approval for Canada (IC RSS 210)
This equipment complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to
the following two conditions:
1. This board may not cause interference, and
2. This board must accept any interference, including interference that may cause undesired operation
of the device.
2.2.1 26 PART 5 – Appendix
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.
2.3 Electrostatic discharge considerations
Although damage from electrostatic discharge (ESD) is much less common on these devices than on early
CMOS circuits, normal handling precautions should be used to avoid exposure to static discharge.
Qualification tests are performed to ensure that these devices can withstand exposure to reasonable levels
of static without suffering any permanent damage.
All ESD testing is in conformity with the JESD22 Stress Test Qualification for Commercial Grade
Integrated Circuits. During the device qualification ESD stresses were performed for the human body
model (HBM), the machine model (MM) and the charge device model (CDM).
All latch-up test testing is in conformity with the JESD78 IC Latch-Up Test.
When operating or handling the development boards or components, Freescale strongly recommends
using at least the grounding wrist straps plus any or all of the following ESD dissipation methods:
• Flexible fabric, solid fixed size, or disposable ESD wrist straps
• Static control workstations, static control monitors, and table or floor static control systems
• Static control packaging and transportation materials and environmental systems
2.4 Disposal instructions
This product may be subject to special disposal requirements. For product disposal instructions, refer to
freescale.com/productdisposal.

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USB-KW40Z overview and description
3 USB-KW40Z overview and description
3.1 Introduction
The USB-KW40Z development platform is an evaluation environment based on the Freescale
MKW40Z160 SoC device. The MKW40Z160 SoC integrates a radio transceiver operating in the 2.36 GHz
to 2.48 GHz range, supporting a range of FSK/GFSK and O-QPSK modulations, an ARM Cortex-M0+
MCU into a single package.
Freescale supplements the MKW40Z160 SOC with tools and software that include hardware evaluation
and development boards, software development IDE, applications, drivers, custom PHY usable with IEEE
Std. 802.15.4 compatible MAC, BLE Link Layer, and enables the Bluetooth Low Energy protocol to be
used in the MBAN frequency range for proprietary applications.
3.2 Board features
3.2.1 USB-KW40Z board
The USB-KW40Z development board contains the MKW40Z160 device it is one of the simplest reference
design utilizing the on chip USB block for power and communication. The USB-KW40Z is a small form
factor self-contained board for evaluation of wireless application and can be used as a packet sniffer. The
USB type-A connection is used with USB enabled hardware such as a computer.
Figure 1 shows the USB-KW40Z development platform.
Figure 1. USB-KW40Z development board

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USB-KW40Z overview and description
The USB-KW40Z development board includes the following features:
• Based on the Freescale ultra low-power MKW40Z160 SoC BLE device
• Fully compliant IEEE Std. 802.15.4, 2006, transceiver supporting 250 kbit/s O-QPSK data in
5.0 MHz channels and full spread-spectrum encode and decode
• Fully compliant Bluetooth v4.1 Low Energy (BLE)
• Full IEEE 802.15.4 compliant wireless node with KSDK enable software
• Reference design area with small footprint, low-cost RF node
— Differential input/output port used with external balun for single port operation
— Low external component count
— Programmable output power from –20 dBm to +5 dBm at the MMCX connector, no harmonic
trap using bypass mode of operation
— Receiver sensitivity: –102 dBm, typical (@1% PER for 20 byte payload packet), for 802.15.4
at the MMCX connector
— Receiver sensitivity: -91 dBm for BLE applications at the MMCX connector
• Integrated PCB inverted meander type antenna and MMCX (Micro-Miniature Coaxial) RF port
• Bypass operation mode
• 32 MHz reference oscillator
• 32 kHz reference oscillator
• 2.4 GHz frequency operation (ISM and MBAN)
• Reset switch drive to MKW40Z160.
• Reset switch drive to debug interface (OpenSDA)
• Cortex 10-pin (0.05 inch) SWD debug port for target MCU
• Cortex 10-pin (0.05 inch) JTAG port for OpenSDA updates
• Integrated open-standard serial and debug interface (OpenSDA)
• 2 Blue LED indicators primary drive thought MKW40Z160 MCU, also connected to MK22FN512
• 1 Push button switch drive to MKW40Z160 MCU, also connected to MK22FN512

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USB-KW40Z overview and description
Figure 2 shows the main board features and I/O headers for the Freescale USB-KW40Z board.
Figure 2. USB-KW40Z component placement
3.3 Serial and debug adapter
The USB-KW40Z development board can be enabled with OpenSDA v2.1, a serial and debug adapter
circuit that includes an open-source hardware design, an open-source bootloader, and debug interface
software. It bridges serial and debug communications between a USB host and an embedded target
processor. The hardware circuit is based on a Freescale Kinetis K22F family microcontroller (MCU).
OpenSDAv2.1 enables the CMSIS-DAP bootloader, an open-source mass storage device (MSD)
bootloader, and the CMSIS-DAP Interface firmware (also known as the mbed interface), that provides a
MSD flash programming interface, a virtual serial port interface, and a CMSIS-DAP debug protocol
interface. For more information on the OpenSDAv2.1 software, see mbed.org and
https://github.com/mbedmicro/CMSIS-DAP.
NOTE
Driver considerations, you must install a windows driver that can be
downloaded from the following link:
https://developer.mbed.org/handbook/Windows-serial-configuration
USB-KW40Z comes pre-programed with a sniffer application. In order to enable this board with
OpenSDA feature and as a development board, refer to the following:
freescale.com/USB-KW40Z/startnow

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USB-KW40Z development board
4 USB-KW40Z development board
4.1 USB-KW40Z board overview
The USB-KW40Z board is an evaluation board based on the Freescale MKW40Z160 SoC. The
USB-KW40Z provides a platform to evaluate the MKW40Z160 SoC device and to develop software and
applications. The core device is accompanied by a the 32 MHz reference oscillator crystal, RF circuitry
including antenna, and supporting circuitry.
The USB-KW40Z board is intended as the core PCB for MKW40Z160 device evaluation and application
development, and can be used as a simple standalone valuation solution or as packet sniffer.
4.1.1 PCB features
The USB-KW40Z board provides the following features:
• USB small form factor
• 4-Layer metal, 0.062 inch thick FR4 board
• LGA footprint and power supply bypass mode
• Printed Meander Antenna and footprint for installing a (user supplied) MMCX connector
• 32 MHz reference oscillator crystal
• 32 kHz crystal provided for optional timing oscillator
• Secondary (MK22FN512) device to use as voltage regulator and MCU processor for BLE sniffer.
4.1.2 Form factor
Figure 3 shows the USB-KW40Z development board layout and footprint.
Figure 3. USB-KW40Z top side (component side) footprint

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USB-KW40Z development board
Figure 4 shows a footprint of the USB-KW40Z with the location of the headers.
Figure 4. USB-KW40Z I/O headers location
4.1.3 Board level specifications
Table 1. USB-KW40Z specifications
Parameter Min Typ Max Units Notes/Conditions
General
Size (PCB: X, Y) — — 18.5 x 61.4
0.73 x 2.42
mm
inches
Layer build (PCB) — 1.57
0.062
—mm
inches
4-Layer
Dielectric material (PCB) — — — — FR4
Power
Current consumption — — —mA Varies with operational mode, Refer to
datasheet.
Temperature
Operating temperature (see note) -40 +25 +70 °C Operating temperature is limited to +70 °C
due to switches. Basic circuit is good for a
maximum temperature of +85 °C.
Storage temperature -30 +25 +70 °C
RF
802.15.4 Frequency range 2405 — 2480 MHz All 16 channels in the 2450 MHz band
BLE Frequency range 2400 — 2483 MHz All 40 channels in the 2450 MHz band
ISM and MBAN Frequency range 2360 — 2483 MHz
RF Receiver
Saturation (maximum input level) — +0 — dBm Refer to datasheet
Sensitivity for 1% packet error rate
(PER) (+25 °C) 802.15.4
— -102 — dBm Refer to datasheet

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USB-KW40Z development board
1] Trap will add 1 to 2 dB of loss.
4.2 Functional description
The USB-KW40Z is built around the Freescale MKW40Z160 SoC in a 48-pin LGA package. The
USB-KW40Z features a IEEE Std. 802.15.4 and BLE 2.4 GHz radio frequency transceiver and a Kinetis
family ultra low-power, mixed-signal ARM Cortex-M0+ microcontroller in a single package. This board
is intended as a simple evaluation platform and as a building block for application development. The
four-layer board provides the MKW40Z160 with its required RF circuitry and a 32 MHz reference
oscillator crystal. The layout for this base level functionality can be used as a reference layout for your
target board. Figure 5 shows a simple block diagram.
Sensitivity for 1% packet error rate
(PER) (+25 °C) BLE
— -94 — dB Refer to datasheet
RF Transmitter
RF Power Output -20 — +5 dBm Programmable in steps.
At the MMCX connector with no trap. 1
2nd harmonic — ≤50 ≤40 dBm —
3rd harmonic — ≤50 ≤40 dBm —
Regulatory Approval
FCC — — — — Product is approved according to the FCC
part 15 standard
CE (ETSI) — — — — Product is approved according to the EN
300 328 V1.7.1 (2006-10) standard
CE (EMC) — — — — Product is approved according to the EN
301 489-1 V1.6.1 (2005-09) and EN 301
489-17 V1.2.1 (2002-08) standards
Safety
UL — — — — Product is approved according to the IEC
60950-1 and EN 60950-1, First Edition
standards
Environment
RoHS — — — — Product complies with the EU Directive
2002/95/EC of 27 January 2003
WEEE — — — — Product complies with the EU Directive
2002/95/EC of 27 January 2003
Table 1. USB-KW40Z specifications (continued)
Parameter Min Typ Max Units Notes/Conditions

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USB-KW40Z development board
Figure 5. USB-KW40Z block diagram
4.2.1 RF performance and considerations
The USB-KW40Z board’s integrated transceiver includes a 1 mW nominal output power PA with internal
voltage controlled oscillator (VCO), integrated transmit/receive switch, on-board power supply regulation,
and full spread-spectrum encoding and decoding. Key specifications for the MKW40Z160 SoC are:
• Nominal output power is set to 0 dBm
• Programmable output power from -20 dBm to +5 dBm at the MMCX, no harmonic trap
• Typical sensitivity is -102 dBm (@1% PER for 25 °C) at the MMCX (802.15.4)
• Typical sensitivity is -91 dBm (@1% PER for 25 °C) at the MMCX (BLE)
• Frequency range is 2360 to 2480 MHz
• Differential bidirectional RF I/O port with integrated transmit/receive switch
• Meander printed metal antenna for a small footprint, low cost design
• Uses a minimum number of RF marching components and external 50:100 balun
An external 50 (bal): 100 (unbal) balun connects a single-ended 50 ohm port to the differential RF port of
the MKW40Z160 SoC’s transceiver. The layout has provision for out-of-band signal suppression
(components L3 and C20) if required. Figure 6 shows the typical topology for the RF circuitry. The RF
connector J4 has been included in the design for measurement purposes and is used as a DNP.