EM91220A Overview
The EM91220 is a series of tone/pulse switchable dialers that is posed of T/P dialer and T/P dialer with 20-set memories . The EM91220 series provides necessary functions of telephone set for application in any environment, such as Pulse dialing, Tone (DTMF) dialing, Handfree dialing, keying tone , mute and pulse mute functions. Beside this, SDO (Serial Data Output) functions is provided in advance version that is...
EM91220A Key Features
- Tone/Pulse switchable
- Wide operating voltage from 2.0 V to 5.5 V
- Low operating current, 0.15 mA (Pulse) and 0.3 mA (Tone) typically
- Adding resistor on keyboard scan pin that can select many telephone specifications, such as : Pulse rate, M/B ratio, Fla
- SDO function supports LCD driver and voice synthesizer to indicate dialing numbers
- Handfree function provides on-hook dialing and speakerphone application
- 20-set three touch repertory memory, each one can store data up to 16 digits
- A 32-digit LNB (last number) redial memory
- A 32-digit SAVE redial memory
- Keytone function provides rapidly keying recognition