The HT9200A tone generators are designed for MCU interfaces. HT9200A can be instructed by a MCU to generate 16 dual tones and 8 single tones from the DTMF pin.
HT9200A的详细介绍
HT9200A -- DTMF Generators
General Description
The H T9 0A tone generators are designed for MCU interfaces. H T920 0A can be instructed by a MCU to generate 16 dual tones and 8 single tones from the DTMF pin. The HT 9200A provides a serial mode whereas the HT920 0B contains a selectable serial/parallel mode interface for various applications such as security systems, home automation, H T 920 0A remote control through telephone lines,