ATSAMD20J18A 32-bit Microcontroller Xplained Pro Evaluation Kit

This application note describes a method to connect an Microchip ATSAMD20E microcontroller to an Microchip AT86RF233 IEEE 802.15.4 Wireless Transceiver. The 32-pin SAM D20E is gaining popularity as a baseband processor for wireless applications. The current development platform uses the 64-pin SAM D20J on the ATSAMD20-XPRO and RF233-XPRO extender board. This combination is supported in Microchip Studio 6. To translate firmware written for the 64-pin platform to a 32-pin target product several layers of signal mapping; such as the 64-pin to 32-pin conversion and header I/O constraints, have to be reconciled. This paper offers a solution that matches the target product topology to the legacy development platform as closely as possible.

• Essential Hardware Connections
• Development Platform Compatibility
• 64-Pin to 32-Pin Mapping
• Signal Map Spreadsheet
• Example Schematic