Holtek HT95R5x多功能电话MCU控制方案

Holtek 公司的HT95R5x/HT95R6x是八位电话通信产品微控制器，具有8KB或16KB ROM、2112B RAM、40端I/O、8级堆栈、内建三个16位定时器、一个RTC定时器及四个外部中断触发等. 此外，还有12位DAC及SPI/I2C，经由与外部闪存语音ROM通讯接口，可产生多种语音，具有高集成度、低成本、低耗电和高效能等特点,非常适合带语音功能通讯产品的应用如多功能电话、无线电话、录音机、家庭安防等。本文介绍HT95R5x/HT95R6x主要特性,方框图,I2C和SPI方框图以及单端输入和差分输入应用电路图.

The series of CID phone MCU are 8-bit high performance, RISC architecture microcontroller devices specially designed for telephone applications. Devices flexibility are enhanced with their internal special features such as power-down and wake-up functions, DTMF generator, DTMF receiver, FSK decoder, PFD driver, SPI and I2C interface, audio DAC output, etc.

These features combine to ensure applications require a minimum of external components and therefore reduce overall product costs.

Having the advantages of low-power consumption, high-performance, I/O flexibility as well as low-cost, these devices have the versatility to suit a wide range of application possibilities such as FSK & DTMF mode Caller ID phone, Home Security products, deluxe feature phones, cordless phones, fax and answering machines, etc.
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