Holtek HT95R45多功能电话MCU控制方案

Holtek(盛群半导体)公司的HT95R45是8位电话通信产品微控制器, 具有4K、8K或16K 字 ROM、1152或2112 字节RAM, 内建二或三个16位定时器、一个RTC定时器及四个外部中断触发等功能, 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。本文介绍了HT95R45主要特性,方框图, PA输入/输出端口框图, PC,PD和PE输入/输出端口框图以及16位定时器/事件计数器0与1的结构框图, SPI和I2C方框图, DTMF接收器单端输入应用电路图.

The phone MCU is a 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, CPT detector, 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 DTMF mode Caller ID phone, Home Security products, deluxe feature phones, cordless phones, fax and answering machines, etc.
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