HT827A0 Datasheet, PDF (1/49 Pages) Holtek Semiconductor Inc – 8-Bit Microcontroller with Voice ROM

HT827A0
8-Bit Microcontroller with Voice ROM
Features
8-bit microcontroller
· 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
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
Applications
· Intelligent educational toys
· High end toy controllers
· Talking alarm clocks
General Description
The HT827A0 is 8-bit high performance
microcontroller with a voice synthesizer and
tone generator. They are designed for applica-
tions 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
· Halt function and wake-up feature reduces
power consumption
· 63 powerful instructions
· Up to a 1ms instruction cycle with a 4MHz
system clock at V_DD=5V
· All instructions in 1 or 2 machine cycles
· 16-bit table read instruction
· 8-level subroutine nesting
· Bit manipulation instruction
· Current type of D/A switch output
· Tone generator counter
· Controllable volume
· 48-pin DIP package
· Alert and warning systems
· Public address systems
· Sound effect generators
current type D/A output. With such a flexible
structure, the HT827A0 is excellent for versa-
tile voice and sound effect product applications.
It also includes a halt function to reduce power
consumption.
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March 15, 2000