HT81009 - Holtek Semiconductor

HT81009 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 play.

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.