Card readers are one of the key elements in a point of sales terminal. They are often portable and require a battery charger. STMicroelectronics offers a wide range of products for implement all the various blocks of the system, allowing different communication interfaces between card terminal and host for remote data collection and bank authorization requests.
AN3991: How to drive multiple stepper motors with the L6470 motor driver
AN4511: Common mode filters
Publications and Collaterals
EOS and ESD concerns in PoE equipment