Data exchange within dynamic transponders, and corresponding transponders

Abstract

The present application relates to data exchange within dynamic transponders, and corresponding transponders. The first communication interface is a contactless communication interface for the integrated circuit. The second communication interface is coupled to the processing unit external to the integrated circuit. Data transfer between the first communication interface and the second communication interface is performed in a transfer mode using a volatile memory circuit. The volatile memory circuit is simultaneously or nearly simultaneously accessible first by the processing circuit coupled to the first communication interface and then by the processing unit via the second communication interface.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims the benefit of priority from French Patent Application No. 1904338, filed on April 25, 2019, the contents of which are hereby incorporated by reference in their entirety to the fullest extent permitted by law. technical field [0003] Implementation modes and embodiments relate to an interface within an integrated circuit, a contactless interface, and a processing unit (eg, a microcontroller) connected 2 C interface) data transfer between. Background technique [0004] Contactless transponders, in particular NFC (Near Field Communication) transponders (such as tags), are intended to be used as external contactless communication devices (such as cellular mobile phones, also known as "smartphones") and connected systems. Gateways between microcontrollers, connected systems are, for example, connected objects, such as connected watches, or connected home automation devices, or connected public dev...

AI Technical Summary

Problems solved by technology

Each frame must be read before the next frame can be written, thus limiting the frame size to the size of physical memory

[0033] Furthermore, the primary transfer of each frame is fast, but since the memory is in turn accessible by the transponder's processing circuitry (and thus by the external contactless reader) or microcontroller, there There is a delay time between them, which has an adverse effect on the overall transfer rate or the overall bit rate (overall data rate)

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