Holtek HT83Fxx 闪存型8位语音微控制方案

Holtek(盛群半导体)公司的HT83Fxx 是闪存型8位语音微控制器, 内含盛群8位微控制器，并内建Flash Voice ROM，高速SPI与I2C接口，单音12-bit电压型DAC，PWM直接推动8/16ohm喇叭，语音容量范围自32秒到512秒，以极少的外部零件，极佳的抗噪声能力与工业规格温度范围 (-40℃～+85℃)，让产品导入语音功能变得更可靠，更简单, 广泛应用于家庭防护、防盗器材、健康医疗、语音家电等。本文介绍了HT83Fxx的主要特性,方框图, 以及VDD=2.7V~3.6V和VIN=3.6V~24V的应用电路.

HT83FXX Flash Type Voice OTP MCU

有别于以往采用OTP与Mask方式, 盛群半导体推出Flash type语音IC HT83Fxx系列。一般的OTP型语音IC虽然可以实时烧录，但是烧录完之后就无法再更改内容。HT83Fxx系列不但可以重复烧录，甚至IC焊上电路板之后仍然可以透过SPI接口修改语音内容。况且愈来愈多的家电产品需要加入语音功能，尤其多国语言的需求常常让客户困扰于变换语音内容。以Flash memory为主体的HT83Fxx变换语音内容非常容易，可以解决过去以来的多国语言与生产库存的困扰。

HT83Fxx内含盛群8位微控制器，并内建Flash Voice ROM，高速SPI与I2C接口，单音12-bit电压型DAC，PWM直接推动8/16ohm喇叭，语音容量范围自32秒到512秒，以极少的外部零件，极佳的抗噪声能力与工业规格温度范围 (-40℃～+85℃)，让产品导入语音功能变得更可靠，更简单。

HT83Fxx系列提供高阶软硬件开发工具(EasyPlay)，已内建多种常用语音播放模式，并配合盛群新一代USB烧录器(e-Writer)，使用容易，烧录简单。另有一系列内建3.3V稳压线路的HT83FxxP。举凡家庭防护、防盗器材、健康医疗、语音家电等应用，在要求少量多样化并快速交货的世代，提供一个快速又可靠的语音IC方案。

The flash type voice series of MCUs have OTP type Program Memory and Flash type Voice Memory. The devices are 8-bit high performance microcontrollers which include a voice synthesizer and tone generator.

They are designed for applications which require multiple I/Os and sound effects, such as voice and melody. The devices can provide various sampling rates and beats, tone levels, tempos for speech synthesizer and melody generator.

They also include two integrated high quality, voltage type DAC outputs and voltage type PWM outputs. The devices are excellent solutions for versatile voice and sound effect product applications with their efficient MCU instructions providing the user with programming capability for powerful custom applications. The system frequency can be up to 8MHz at an operating voltage of 2.7V and include a power-down function to reduce

power consumption.

The MCU flash voice memory capacity ranges from 2M_8 bit to 128K_8 bit, into which the user can download their voice data repeatedly.

HT83Fxx 主要特性:

Operating voltage: 2.7V~3.6V

System clock: 4MHz~8MHz

Crystal and RC system oscillator

12 I/O pins

I2C/SPI Bus Serial Interface, shared with PB

2K_15 OTP Program Memory

Between 2M_8 bit and 128K_8 bit flash type data memory

80_8 Data Memory

Two 8-bit programmable timer counter with 8-stage prescaler and one time base counter

12-bit high quality voltage type D/A output

PWM circuit direct drive speaker

Watchdog Timer function

4-level subroutine nesting

2.7V Low voltage detection, tolerance 5%

Integrated LDO regulator in HT83F10P/20P/40P/60P/80P

Power-down function and wake-up feature reduce power consumption

Up to 1_s (0.5_s) instruction cycle with 4MHz (8MHz) system clock at VDD= 3.6V

63 powerful instructions

One reset pin

Flash Data Memory can be re-programmed up to 100,000 times

Flash Data Memory data retention > 10 years

44-pin QFP package



图1.HT83Fxx方框图

应用电路:

1. VDD=2.7V~3.6V



图2. VDD=2.7V~3.6V的应用电路

VIN=3.6V~24V



图3.VIN=3.6V~24V应用电路