HT81009
HT81009 is EasyVoice Speech manufactured by Holtek Semiconductor.
- Part of the HT81R03 comparator family.
- Part of the HT81R03 comparator family.
Features
- Operating voltage: 2.4V~5V
- Directly drives an external transistor
- PWM function directly driver speaker
- Low standby current (1m A typ. for VDD=3V)
- Minimal external ponents
- 240 notes table ROM for key functions
- Programmable silence length and end-pulse width
(minimal end-pulse width is 1.3ms at 8k Hz sampling rate)
- Controllable volume
- FLAG1 options
- End-pulse output
- 3Hz, 3Hz B flash
- 6Hz, 6Hz B flash
- Busy output
- OFF
- FLAG2 options
- 3Hz flash
- 6Hz flash
- Busy output
- OFF
- 6 keys (Directed)
- 8 keys (Matrix key)
- Key options
- Sequential/Directed
- Repeat (KEY2~KEY6)
- STOP key (KEY6)
- Key debounce time: 1.2ms, 22ms, 45ms
(based on a 8k Hz sampling rate)
- One shot/Normal
- Pull-high resistance: 0, 50k W, 100k W, 200k W
- Section options
- Retriggerable
- Non-retriggerable
- Package types: HT81006/009/012/018: 16-pin DIP package HT81R09/R18/R36: 16-pin SOP package
Applications
- Leisure products
- Alarm clocks
- Alert and warning system
- Sound effect...
