HT81009 Overview
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.
Key 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
