EM91865
13 MEMORY TONE/PULSE DIALER WITH HF, HD, REDIAL
AND VOLUME CONTROL FUNCTION
minary
Preli
GENERALDESCRIPTION
The EM91865 are 13 memory tone/pulse switchable dialer with Last Number Redail (LNB) anD SAVE function,
Which are fabricate in CMOS technology with wide operating voltage for both tone and pulse mode. EM91865
consumes very low memory retention current in on hook state. The EM91865 provide necessary functions of
telephone set for application in any environment, such as pulse dialing, tone (DTMF)dialing, handfree dialing. Beside
this, hold, mute and redial function are provide for particular operation. In redial mode EM91865 can auto insert
pause
time for application in PABX system. EM91865 also have a special I/O pin - VAO can used to
control
the receive volume amplify circuit.
FEATURES
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Volume add Control Function.
One key Redial Function.
Flash key is available and have multiple Flash time ( 600 ms, 300 ms, 100 ms ) can be selected.
Auto Insert Pause Time.
Tone/Pulse Switchable.
Pulse mode fixed 10PPS.
Pulse to tone ( P→T ) key is provided for PABX operation.
Many options can be selected by R option.
Mode ( Pulse, Tone )
M/B ratio ( 40:60 ; 33:66 )
Auto insert pause time ( enable ; disable )
13 sets 16 digits one touch memory, or 3 set one touch and ten set two touch 16 digits
memory.
One set 32 digits SAVE function.
One set 32 digits LNB redial function.
Mixed and cascaded dialing.
Hold and Mute function.
Hand Free dialing.
Tone duration and inter -tone pause are fixed at 90 ms.
Flash pause time are fixed at 600 ms.
Pulse to Tone pause time are fixed at 3.6sec.
Uses 3.579545 MHz crystal or ceramic resonator (with built-in capacitor, no need extra capacitor).
Package in DIP 18 or DIP 16.
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Total System
• Operating voltage : 2.0V ~ 5.5V
• Operating current : Tone mode 0.3 mA (typical) ~ 0.5 mA
Pulse mode 0.15 mA (typical) ~ 0.2 mA
• Standby current : 0.01 uA ( typical ) 0.1 uA ( max. )
• Use single clock 3.579545 MHz crystal
* This specification are subject to be changed without notice.
4.28.1999
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EMC [ ELAN MICROELECTRONICS CORP ]
