HT827A0

8-bit microcontroller
` Operating voltage: 2.4V~5.2V
` 8Kx16 program ROM
` 208x8 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 1s instruction cycle with a 4MHz system clock at V<sub>DD</sub>=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
` 128Kx8 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

Supply Voltage...........................-0.3V to 5.5V
Input Voltage ...............V_SS-0.3V to V_DD+0.3V
Storage Temperature............... -50 to 125
Operating Temperature ..............-25 to 70

Note: These are stress ratings only. Stresses exceeding the range specified under "Absolute Maximum Ratings" may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

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 applications. It also includes a halt function to reduce power consumption.