SLOS757G December 2011 – March 2020 TRF7962A
Figure 7-1 shows a sample application schematic with a serial interface to the MCU.
Minimum MCU requirements depend on application requirements and coding style. If only one ISO protocol or a limited command set of a protocol must be supported, MCU flash and RAM requirements can be significantly reduced. Recursive inventory and anticollision commands require more RAM than single slotted operations. For example, an application for ISO/IEC 15693 only that supports anticollision needs approximately 7KB of flash memory and 500 bytes of RAM. In contrast, a full NFC reader/writer application with NDEF message support needs approximately 45KB of flash memory and 3KB of RAM. An MCU that can run its GPIOs at 13.56 MHz is required for direct mode 0 operations.