HT81R09 Overview
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.
HT81R09 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 ponents
- 240 notes table ROM for key functions
- Programmable silence length and end-pulse width
- Controllable volume
- FLAG1 options
- End-pulse output