Abstract:This article explains how the 73S8014BL low-pin-count smart-card interface replaces the 73S8014R smart-card interface. Several features on the 73S8014R have been removed or redefined to reduce the 20-pin count. These modifications resulted in the removal of six pins and achieved the lowest possible cost for the 14-pin 73S8014BL. Card switch debounce and power-down capabilities were also added to the 73S8014BL. This application note also lists precautions to ensure proper transition to the 73S8014BL, and shows a dual-footprint implementation with the 73S8014R and 73S8014BL.
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