Holtek Semiconductor HT815D0
The HT815D0 is a single chip LOG-PCM voice synthesizer LSI with 11.2-second voice capacity at 6kHz sampling rate. The chip when triggered drives a speaker through an external transistor with a current switch D/A converter output. The HT815D0 provides 12 key inputs and 2 programmable FLAG outputs.| Part No. | HT815D0 |
|---|---|
| Datasheet | HT815D0 Download |
| Manufacturer |  Holtek Semiconductor |
| Description | 11.2-Second LOG-PCM Speech |
| Buy | Stock & Price |
FEATURES
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● Operating voltage: 2.4V~5.0V Directly drives an external transistor Low standby current (1mA typ. for VDD=3V) Minimal external components 508 words table ROM for key functions Programmable silence length and end-pulse width (minimal end-pulse width is 330ms at a 6kHz sampling rate) 11.2-second voice capacity (based on a 6kHz sampling rate) FLAG1 options – End-pulse output – 3HzB flash – 6HzB flash – Voice output indication – Busy output FLAG2 options – 3Hz flash – 6Hz flash – Busy output
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● Controllable volume 12 keys Key options – Stop key: KEY12 – Random (only for KEY1) – Sequential (only for KEY1) – Repeat (for all KEYs) – Key debounce time (for all KEYs): 700ms, 22ms, 45ms, 180ms (based on a sampling rate of 6kHz) – One shot (for all KEYs) – Level-trigger – Pull-high resistance (for all KEYs) Section options – Retriggerable – Non-retriggerable Dice form or 16/20/24-pin DIP, 20/24-pin SOP package
APPLICATIONS
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● Leisure products Alarm clocks Public address system
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● Alert & warning system Sound effect generators
GENERAL DESCRIPTION
Negligible current will be consumed in the standby state.
