| Description | The EasyVoiceTM is a single-chip voice synthesizer LSI . The chip when triggered drives a speaker directly or through an external transistor with a PWM output. Negligible current is consumed in the standby state. The HT81xxx provides direct key or Matrix key input and 2 programmable FLAG outputs. Wi... |
| Features |
· Operating voltage: 2.4V~5V · Directly drives an external transistor · PWM function directly driver speaker · Low standby current (1mA typ. for VDD=3V) · Minimal external components · 240 notes table ROM for key functions · Programmable silence length and end-pulse width (minimal end-pulse width is 1.3ms at 8kHz sampling rate) · Controllable volume · FLAG1 options - End-pulse output - 3Hz, 3HzB flash - 6Hz, 6HzB 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~KEY... |
| Datasheet |
 HT81R09 Datasheet - 150.90KB |
| Part Number | Description |
|---|---|
 Holtek Semiconductor Inc |
EasyVoice Speech The EasyVoiceTM is a single-chip voice synthesizer LSI . The chip when triggered drives a speaker directly or through an external transistor with a PWM output. Negligible current is consumed in the standby state. The HT81xxx provides direct key or Matrix key input and 2 programmable FLAG outputs. With 2.4V~5.0V power supply, a complete synthesized voice playback system can be easily built with very few external components. The customer¢s voice sources are recorded section by section into an internal mask ROM. The instructions of section playback arrangement of each key are stored in the table ROM. The key features are also programmable. With such a flexible structure, the EasyVoiceTM is exc... |
 Holtek Semiconductor |
EasyVoice Speech The EasyVoiceTM is a single-chip voice synthesizer LSI . The chip when triggered drives a speaker directly or through an external transistor with a PWM output. Negligible current is consumed in the standby state. The HT81xxx provides direct key or Matrix key input and 2 programmable FLAG outputs. With 2.4V~5.0V power supply, a complete synthesized voice playback system can be easily built with very few external components. The customer¢s voice sources are recorded section by section into an internal mask ROM. The instructions of section playback arrangement of each key are stored in the table ROM. The key features are also programmable. With such a flexible structure, the EasyVoiceTM is exc... |
Holtek Semiconductor |
EasyVoice Speech The EasyVoiceTM is a single-chip voice synthesizer LSI . The chip when triggered drives a speaker directly or through an external transistor with a PWM output. Negligible current is consumed in the standby state. The HT81xxx provides direct key or Matrix key input and 2 programmable FLAG outputs. With 2.4V~5.0V power supply, a complete synthesized voice playback system can be easily built with very few external components. The customer¢s voice sources are recorded section by section into an internal mask ROM. The instructions of section playback arrangement of each key are stored in the table ROM. The key features are also programmable. With such a flexible structure, the EasyVoiceTM is exc... |