HT86BXX/HT86BRXX -- Enhanced Voice 8-Bit MCU

General Description
The Voice type series of MCUs 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 an integrated high quality, voltage type DAC output. The external interrupt can be triggered with falling edges or both falling and rising edges.
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 2.2V and include a power-down function to reduce power consumption.

Features
Operating voltage: 2.2V~5.5V
System clock: 4MHz~8MHz
Crystal and RC system oscillator
16/20/24 I/O pins
8Kx16-bit Program Memory
192x8/384x8-bit Data Memory
External interrupt input
Three 8-bit programmable Timers with overflow interrupt and 7-stage prescaler
12-bit high quality voltage type D/A output
PWM circuit direct audio output
External RC oscillator converter
8 capacitor/resistor sensor input
Watchdog timer function
8-level subroutine nesting
Low voltage reset function
Integrated voice ROM with various capacities
Power-down function and wake-up feature reduce
power consumption
Up to 0.5us instruction cycle with 8MHz system clock at VDD= 5V
63 powerful instructions