EM91440 View Datasheet(PDF) - ELAN Microelectronics

Part Name

Description

View to exact match

EM91440

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR

ELAN Microelectronics 

EM91440 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

HKS

KEY IN

KT

XMUTE

HDO

SDO

PO

DTMF

OSC.

2

RD/P

3

Tp

Tidp

Tidp

Figure 5. Pause key operating timing

Hi-impedance

HKS

KEY IN

KT

XMUTE

HDO

SDO

PO

DTMF

OSC.

HKS

KEY IN

KT

XMUTE

HDO

SDO

PO

DTMF

OSC.

2

*/T

3

4

Tpt

Figure 6. Pulse to Tone (P→T) operating timing

F

Tdb

Tf

Tfp=300ms

Figure 7. Flash key operating timing

* This specification are subject to be changed without notice.

Hi-impedance

Hi-impedance

10.1.1997 16

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