From ultra-low power MSP430™ MCUs and high-performance C2000™ real-time controllers, to Hercules 32-bit ARM-based safety MCUs and Stellaris® ARM® Cortex™-M4F MCUs, TI offers the broadest range of embedded control products.
the project was building a NFC reader to be interfaced with a cash register to make contectless payment. The first prototype was designed with an ARM 7 MCU the LPC2468, we had a few problems they are:
- there were few software examples and libraries, and no explanation of these examples.
- The LPC2468 MCUhas 208 pins, half of these pins are not used in the design. This MCUtakes too much space on the PCB.
- The LPC2468 MCU has no built-in Ethernet PHY, so it requires an external PHY.
- The LPC2468 MCU supports USB OTG only with an external USB OTG Transceiver.
So because of the problems mentioned above it was necessary to choose a different MCU that solve these problems. The Stellaris LM3S9B95 was choose because:
- The Stellaris LM3S9B95 MCU has an software libraries with examples and explanation.
- The Stellaris LM3S9B95 MCU has 100 pins enough for the design. The Stellaris LM3S9B95 MCU is 3 times smaller than the LPC2468MCU.
- The Stellaris LM3S9B95 MCU has a built-in ethernet PHY.
- The Stellaris LM3S9B95 MCU support USB OTG with the use of USB power switcher IC.
- The Stellaris LM3S9B95 MCU is Cortex M3 new generation MCU core.
so we have made the switch to the Stellaris LM3S9B95 MCU.
Merry christmas everyone and kind regards,
Thanks for taking the time out to provide your TI Stellaris story! If there is ever anything I can do to help improve your TI E2E experience please let me know.
Hope you are having a great Holiday!
Blake Ethridge, Social Media Community Engagement Manager, Texas Instruments
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