Freescale Semiconductor, Inc.
User’s Guide
© 2015 Freescale Semiconductor, Inc. All rights reserved.
1
About this guide
This User’s Guide describes the Freescale FRDM-CR20A
development board. The FRDM-CR20A is a 2.4 GHz
Industrial, Scientific, and Medical (ISM) intended for the
IEEE® 802.15.4 Standard, including Thread and
IPv6/6loWPAN protocols. The FRDM-CR20A contains the
MCR20A transceiver that is typically combined with a
software stack and a Freescale Kinetis MCU to implement
an IEEE 802.15.4 Standard platform solutions.
1.1
Audience
This manual is intended for system designers.
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.
Document Number: FRDMCR20AUG
Rev. 0, 04/2015
Contents
1. About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1. Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2. Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.1. FCC guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.2. Regulatory approval for Canada (IC RSS 210) . . . . . 2
2.3. Electrostatic discharge considerations . . . . . . . . . . . . 3
2.4. Disposal instructions . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. MCR20A transceiver overview and description . . . . 3
3.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.2. Board features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.3. Software and driver considerations . . . . . . . . . . . . . . 5
4. FRDM-CR20A development board . . . . . . . . . . . . . . 5
4.1. FRDM-CR20A board overview . . . . . . . . . . . . . . . . . 5
4.2. Functional description . . . . . . . . . . . . . . . . . . . . . . . . 9
4.3. Schematic, board layout, and bill of material . . . . . . 15
5. PCB manufacturing specifications . . . . . . . . . . . . . . 20
5.1. Single PCB construction . . . . . . . . . . . . . . . . . . . . . 21
5.2. Panelization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.3. Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.4. Solder mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.5. Silk screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Freescale Freedom Development
Board FRDM-CR20A User's Guide
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