SLOA244B May 2017 – March 2019 RF430CL330H , RF430CL331H
RF430CL330H requirements
The RF430CL330H is designed to automatically handle all RF communications with an NFC device, essentially operating a black box device. After data is loaded through serial communication, that data can be made available to NFC devices with just a single register write.
The handling of the NFC communication is fully implemented within the standard operation of the RF430CL330H. This removes the overhead of managing the NFC communication from the host MCU.
RF430CL331H requirements
The RF430CL331H, to support the pass-through mode, has the drawback of requiring the host MCU to manage portions of the NFC communication during data exchange. After initial tag activation is completed, the RF430CL331H informs the host MCU through interrupts that a command has been received.
To react properly, the host MCU must fetch the information about the command from the RF430CL331H and determine through software what command was received.
Furthermore, it is the responsibility of the host MCU to ensure that the correct NFC Data Exchange Format (NDEF) headings are appended to each packet of data that is transmitted. All of these requirements are additional tasks for the host MCU when operating the RF430CL331H, but that are handled automatically by the RF430CL330H.