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