W91540N Overview
The W91540N series are tone/pulse switchable telephone dialers with 10 memories, keytone or lock function, and handfree dialing control. These chips are fabricated using Winbond's high-performance CMOS technology and thus offer good performance in low-voltage and low-power operations.
W91540N Key Features
- DTMF/pulse switchable dialer
- Two by 32-digit redial and save memory
- Ten by 16 digit two-touch indirect repertory memory
- Pulse-to-tone (-/T) keypad for long distance call operation
- Cascaded dialing
- Uses 5 × 5 keyboard
- Easy operation with redial, flash, pause, and -/T keypads
- Pause, P→T (pulse-to-tone) can be stored as a digit in memory
- 0 or 9 dialing inhibition pin for PABX system or long distance dialing lock out
- Dialing rate (10 ppS or 20 ppS) selected by bonding option