Renesas provides evaluation versions of each MCUs free-of-charge. Please download the appropriate file here.
M3S-DTMF-Tiny is a software library for generating and detecting DTMF (Dual Tone Multi Frequency) tones, and it just requires small memory.
We have the various lineup of MCUs , including R8C Family, which are suitable for use in applications such as single-function home appliances and compact industrial equipment, where the incorporation of more sophisticated functionality or the newest technology, with a negligible increase in cost, is desired. To support such development activities, Renesas offers software libraries with only the essential features for application, at low cost.
Use of M3S-DTMF-Tiny enables you to introduce DTMF tones generation and detection capabilities to your systems designed with supported MCUs.