SPNA135A Datasheet, PDF (2/15 Pages) Texas Instruments – Compatibility Considerations: TMS570LS20x/10x to TMS570LS31x/21x

Introduction
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1 Introduction
The Hercules family of microcontrollers includes the TMS570LS series. This is a high-performance
microcontroller series with features that make it easy to develop safety-critical applications.
The microcontrollers included in the TMS570LS20x/10x series are:
• TMS570LS20216
• TMS570LS20206
• TMS570LS10216
• TMS570LS10206
• TMS570LS10116
• TMS570LS10106
The microcontrollers included in the TMS570LS31x/21x series are:
• TMS570LS3137
• TMS570LS3135
• TMS570LS3134
• TMS570LS2135
• TMS570LS2134
• TMS570LS2125
• TMS570LS2124
Overall, the LS31x/21x series of microcontrollers incorporates a superset of functionalities incorporated on
the LS20x/10x series of microcontrollers. The LS31x/21x series also implements significant feature
enhancements and performance improvements, while still maintaining application code compatibility to the
LS20x/10x series. Any application written for the LS20x/10x series runs correctly on the LS31x/21x series
as well, as long as only the common functions are exercised.
The two series of microcontrollers are more diverse in terms of hardware compatibility. That is, the 144
PGE package pin-outs for the LS31x/21x series is not compatible at all to the LS20x/10x series. An
application board designed for the 144 PGE LS20x/10x microcontrollers cannot be used for the LS31x/21x
series without significant changes. The two series are closer to being compatible in the 337 BGA package
– there are some important differences which are discussed in this document as well.
2
Compatibility Considerations: TMS570LS20x/10x to TMS570LS31x/21x
Copyright © 2011, Texas Instruments Incorporated
SPNA135A – October 2011
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