HT827A0

8-Bit Microcontroller with Voice ROM Features 8-bit microcontroller · · · · · · · · HT827A0 Operating voltage: 2.4V~5.2V 8K´16 program ROM 208´8 data RAM 36 bidirectional I/O lines Interrupt input 16-bit programmable timer/event counter with overflow interrupts Watchdog timer On-chip crystal or RC types of oscillator · · · · · · · Halt function and wake-up feature reduces power consumption 63 powerful instructions Up to a 1ms instruction cycle with a 4MHz system clock at VDD=5V All instructions in 1 or 2 machine cycles 16-bit table read instruction 8-level subroutine nesting Bit manipulation instruction Voice and melody synthesizer · · · · · 128K´8 voice ROM 3/4 bit ADPCM coding algorithm 26 kinds of voice sampling rates Tone level of 4 octaves 14 kinds of melody beats · · · · Current type of D/A switch output Tone generator counter Controllable volume 48-pin DIP package Applications · · · Intelligent educational toys High end toy controllers Talking alarm clocks · · · Alert and warning systems Public address systems Sound effect generators General Description The HT827A0 is 8-bit high performance microcontroller with a voice synthesizer and tone generator. They are designed for applications on multiple I/Os with sound effects. The LSIs provide 26 kinds of voice sampling rates, 4 octaves of tone level as well as a high quality of current type D/A output. With such a flexible structure, the HT827A0 is excellent for versatile voice and sound effect product applicat...