User Manual
Table Of Contents
- Introduction
- Features
- Table of Contents
- 1. Ordering Information and Module Marking
- 2. Block Diagram
- 3. Pinout and Package Information
- 4. Electrical Characteristics
- 5. Power Management
- 6. Clocking
- 7. CPU and Memory Subsystem
- 8. WLAN Subsystem
- 9. Bluetooth Low Energy 4.0
- 10. External Interfaces
- 11. Application Reference Design
- 12. Module Outline Drawings
- 13. Design Consideration
- 14. Reflow Profile Information
- 15. Module Assembly Considerations
- 16. Regulatory Approval
- 17. Reference Documentation
- 18. Document Revision History
- The Microchip Web Site
- Customer Change Notification Service
- Customer Support
- Product Identification System
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System Certified by DNV
- Worldwide Sales and Service
• Place GND polygon pour below the module on the top layer of the host board. Avoid
breaks in this GND plane, ensure continuous GND plane for better RF performance.
• GND polygon pour in the top layer of the host board should have a minimum area of 20
x 40 mm.
• Place sufficient GND vias on host board edge and below the module for better RF
performance.
• It is recommended to have a 5x5 grid of GND vias solidly connecting the exposed GND
paddle of the module to the ground plane of the host board. This will act as a good
ground and thermal conduction path for the ATWINC3400-MR210CA module. The GND
vias should have a minimum via hole size of 0.2 mm.
• Antenna on the module should not be placed in direct contact or close proximity to
plastic casing/objects. Keep a minimum clearance of >7 mm in all directions around the
chip antenna.
Figure 13-2. ATWINC3400-MR210CA Placement Reference
13.2 Antenna Performance
The ATWINC3400-MR210CA uses a chip antenna which is fed via matching network. The table below
lists the technical specification of the chip antenna.
Table 13-1. Chip antenna specification
Paramater Value
Peak gain 0.5 dBi
Operating frequency 2400 - 2500 MHz
ATWINC3400-MR210CA
© 2017 Microchip Technology Inc.
Draft Datasheet Preliminary
DS00000000A-page 39