EM91220B Datasheet Tone/pulse Switchable Dialer With Lcd Interface

Manufacturer: ELAN Microelectronics Corp

Overview: TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE EM91220 SERIES EM91220 SERIES.

Datasheet Details

Part number	EM91220B
Manufacturer	ELAN Microelectronics Corp
File Size	145.57 KB
Description	TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
Datasheet	EM91220B_ELANMicroelectronicsCorp.pdf

General Description

The EM91220 is a series of tone/pulse switchable dialers that is composed 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 designed to drive LCD driver and voice synthesizer.

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, Flash time, Pause time, P-T wait time and keyboard type.
SDO function supports LCD driver and voice synthesizer to indicate dialing numbers.
Handfree function provides on-hook dialing and.

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