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HT827A0 Datasheet

  • HT827A0

  • 8-Bit Microcontroller with Voice ROM

  • 49頁

  • HOLTEK

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8-Bit Microcontroller with Voice ROM
Features
8-bit microcontroller
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HT827A0
Operating voltage: 2.4V~5.2V
8K麓16 program ROM
208麓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
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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
Voice and melody synthesizer
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128K麓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
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Current type of D/A switch output
Tone generator counter
Controllable volume
48-pin DIP package
Applications
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Intelligent educational toys
High end toy controllers
Talking alarm clocks
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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 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
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.
1
March 15, 2000

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