HT99C810/HT99C811 Cordless Phone Controller
Features
Provide mask type or OTP type version Operating voltage: 2.4V~5.2V (mask type), 3.0V~5.2V (OTP type) 48 bidirectional I/O lines One interrupt input Two 16-bit programmable timer/event counter with overflow interrupt On-chip crystal and RC oscillator Watchdog timer 8K × 16 program memory ...