HT812D0
Features
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Operating voltage: 2.4V~5.0V Directly drives an external transistor Low standby current (1µA Typ. for VDD=3V) Minimal external ponents 124 words table ROM for key functions Programmable silence length and end-pulse width (minimal end-pulse width is 330µs at a 6k Hz sampling rate) 2.8-second voice capacity Controllable volume FLAG1 options:
- End-pulse output
- 3Hz flash
- 6Hz flash
- Voice output indication
- Busy output FLAG2 options:
- 3Hz flash
- 6Hz flash
- Busy output
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- Four keys Key options:
- Stop key: KEY4
- Random (only for KEY1)
- Sequential (only for KEY1)
- Repeat (for all KEYs, under retriggerable condition)
- Key debounce time (for all KEYs): 700µs, 22ms, 45ms, 180ms (based on a sampling rate of approximately 6k Hz)
- One shot (for all KEYs)
- Level-trigger
- Pull-high resistance (for all KEYs) Section options:
- Retriggerable
- Non-retriggerable
Applications
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- Toys Alarm clocks Public address system
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Alert & warning system...
