EM91450BP ELAN Microelectronics Corp, EM91450BP Datasheet

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EM91450BP

Manufacturer Part Number
EM91450BP
Description
Tone/pulse switchable dialer with LCD interface and IPP detect function
Manufacturer
ELAN Microelectronics Corp
Datasheet

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Part Number:
EM91450BP
Manufacturer:
EMC
Quantity:
190
GENERAL DESCRIPTION
FEATURES
ORDERING INFORMATION
Versions list and function outline
* This specification are subject to be changed without notice.
VERSION
EM91450A
EM91450B
EM91450C
EM91450D
Note : PDP = Pocket Dialer Prevented
The EM91450 is a series of tone/pulse switchable dialers that is composed of T/P dialer. The EM91465 provide
modern LCD driver's series data output port, which can display modern function operating icons. The
EM91450 series provide necessary functions of telephone set for application in any environment, such as Pulse
dialing, Tone (DTMF) dialing, Handfree dialing, keying tone ,and lock functions. The lock function is designed
to inhibit toll dialing operation. Beside this, ring detector and SDO (Serial Data Output) functions are provided
in advance version. Ring detector can prevent illegal dialing from pocket dialer. The SDO is designed to drive
LCD driver and voice synthesizer. In this application, the dialing numbers and modern function operating icons
can be displayed on LCD screen with LCD driver (EM32100 or EM32117 ). The EM91450 has a special I.P.
P. detect function (Illegal Parallel Phone Detect) can prevent the illegal connect external Phone. The I.P.P. will
detect the illegal user. When illegal user pickup phone, the function will alarm and send the alarm signal to the
telephone line to interfer the illegal dialing.
• I.P.P. detect function prevents the illegal connect external phone.
• SDO function supports LCD driver and voice synthesizer to indicate dialing numbers and function operat-
• Lock function provides conventionality key lock and password lock operations.
• Ring detector is designed to prevent illegal dialing from pocket dialer.
• Line hold function is designed for stopping conversation temporality.
• Tone/Pulse switchable.
• Adding resistor on keyboard scan pin that can select many telephone specifications, such as : Pulse rate,
• 13 set one touch or (3 set one touch and 10 set two touch) repertory memory, each one can hold data up to
• A 32-digit LNB (last number) redial memory.
• Keytone function provides rapidly keying recognition.
• Handfree function provides on-hook dialing and speakerphone application.
• Pause and P-T time are fixed to 3.6 seconds.
• Tone duration and inter-tone pause time are fixed to 98 ms.
• Using 3.579545 MHz crystal or ceramic resonator.
• Package forms: PDIP, skinny.
ing icons.
Wide operating voltage from 2.0 V to 5.5 V.
Low operating current, 0.15 mA (Pulse) and 0.3 mA (Tone) typically.
M/B ratio, Flash time, lock dialing functions.
16 digits.
: I.P.P. detect=Illegal Parallel Phone Detect.
LNB
KT
HOLD
TONE/PULSE DIALER WITH LCD INTERFACE
I.P.P.
TONE/PULSE DIALER WITH LCD INTERFACE
LOCK
AND I.P.P. DETECT FUNCTION
HF
AND I.P.P. DETECT FUNCTION
SDO(LCD)
EM91450 SERIES
EM91450 SERIES
2.10.1999
PDP
1

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EM91450BP Summary of contents

Page 1

GENERAL DESCRIPTION The EM91450 is a series of tone/pulse switchable dialers that is composed of T/P dialer. The EM91465 provide modern LCD driver's series data output port, which can display modern function operating icons. The EM91450 series provide necessary functions ...

Page 2

... ROW2 XIN ROW1 XOUT HKS XMUTE VDD VSS DTMF HFI HFO DRING COL1 COL2 COL3 COL4/ */ RD/P EM91450 SERIES AND I.P.P. DETECT FUNCTION EM91450BP ROW4 3 16 ROW3 4 15 ROW2 5 14 ROW1 6 13 HKS 7 12 VDD 8 11 DTMF 9 10 HFO EM91450DK 1 22 ...

Page 3

FUNCTIONAL BLOCK DIAGRAM COL4/KT XMUTE PIN DESCRIPTIONS Symbol ROW1~ROW4 Keyboard scan pins of row group. In idle state (HKS is "High" and HFO is "Low"), these pins stay ÒHigh impedanceÓ level to prevent power consumption. Otherwise, these pins switch to ...

Page 4

Symbol HKS Control signal inputs pin that is corresponding hook switch status. When handset was left from cradle, this pin must be connected to "Low" level to operate all functions. Otherwise, this pin must be connected to "High" level to ...

Page 5

FUNCTION DESCRIPTIONS Dialing signal selection The EM91450 series incorporated a special keyboard scanning function that is connecting a resistor (typically is 560 Kohms) on keyboard scan pin to select many telephone specifications. The specifications are described as following : a. ...

Page 6

Redialing: After normal dialing, directly keying F key (or On-Off hook once) and keying RD key on keyboard. The numbers that are stored into LNB memory will be dialed output. Pause (P) key operation The Pause (P) key is designed ...

Page 7

Turn on Handfree (HF) function. (HFO pin switched to "High") Special Note: A 300 ms delay time (Tdly) at the first Off-Hook or turn on Handfree that is a special designed to avoid a rapid key entry (dummy number ...

Page 8

SDO (Serial Data Output) function The SDO is serial data output which format is same as UART protocol. SDO function is designed to drive LCD driver and voice synthesizer. So the dialing numbers can be display on LCD screen with ...

Page 9

Normal dialing : Set lock function to none lock mode (without resistor connected to COL1 pin) or set password equal to 000. In this case, the dialer is operated in normal mode and all functions work at unlimitation. Dialing via ...

Page 10

I.P.P. DETECT function The EM91450 series provide the I.P.P. function to pretect illegal connect. I.P.P means Illegal Parallel Phone Detect. I.P.P. function depend on XMUTE pin and HKS, HF status. When in the ON-HOOK condition and HF turn off, the ...

Page 11

ABSOLUTE MAXIMUM RATINGS Items Power supply voltage Input voltage range Operating temperature Storage temperature Power consumption DC ELECTRICAL CHARACTERISTICS o (Ambient temperature =2.5V unless otherwise noted, all voltages referenced Parameter Operating voltage Operating ...

Page 12

AC ELECTRICAL CHARACTERISTIC o (Ambient temperature =2.5V unless otherwise noted, all voltages referenced to Vss,Fosc=3.579545 MHz) DD Parameter Keyboard debounce time Key tone signal: frequency duration Pause time Pulse to Tone waiting time Flash time Pulse ...

Page 13

TIMING DIAGRAM HKS 2 KEY IN Tdb KT XMUTE SDO PO DTMF OSC. Tdly HKS 2 KEY IN Tdb KT XMUTE SDO PO DTMF OSC. * This specification are subject to be changed without notice. TONE/PULSE DIALER WITH LCD INTERFACE ...

Page 14

LNB=2,3 HKS RD/P KEY IN Tdb KT XMUTE SDO PO DTMF OSC. Tdly LNB=2,3 HKS RD/P KEY IN Tdb KT XMUTE SDO PO DTMF OSC. Tdly * This specification are subject to be changed without notice. TONE/PULSE DIALER WITH LCD ...

Page 15

HKS 2 KEY IN KT XMUTE SDO PO DTMF OSC. HKS 2 KEY IN KT XMUTE SDO PO DTMF OSC. Figure 6. Pulse to Tone (P T) operating timing HKS F KEY IN Tdb KT XMUTE SDO PO DTMF OSC. ...

Page 16

HKS KEY IN KT SDO <Note>L=Least significant bit,M=Most significant bit, SB=START bit , SPT=STOP bit HKS HD HF KEY IN HFO HDO XMUTE SDO PO MELODY @ : It can be triggled by extension telephone set for hold function release ...

Page 17

RING Ton DRING HKS RMUTE * The external ring detection circuit must send a low signal at the total ring cycle (Ton and Toff) RING DRING HKS RMUTE * This specification are subject to be changed without notice. TONE/PULSE DIALER ...

Page 18

APPLICATION CIRCUIT : CONTROL AND IPP DETECT * This specification are subject to be changed without notice. TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION 12 11 DRING DRING RMUTE 13 10 HFO HFI HFO 14 9 VSS DTMF ...

Page 19

APPLICATION CIRCUIT : KEY BOARD AND HOLD * This specification are subject to be changed without notice. EM91450 SERIES TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION 2.10.1999 19 ...

Page 20

APPLICATION CIRCUIT : LCD DRIVER USE EM32117 1 SEG0 2 SEG1 3 SEG2 4 SEG3 5 SEG4 6 SEG5 7 SEG6 8 SEG7 9 SEG8 10 SEG9 11 SEG10 12 SEG11 13 SEG12 14 SEG13 15 SEG14 16 SEG15 17 ...

Page 21

APPLICATION CIRCUIT : LCD DRIVER USE EM32100 COM3 COM2 COM1 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 * This specification are subject to ...

Page 22

PACKAGE INFORMATION Example : EM 91450 P (1) (2) (3) (1) ELAN MICRO. pefix (2) Type number (3) Package code: 18/20/28 Lead Plastic Package PDIP MILIMETERS INCHES DIM MIN. MAX. MIN. MAX 5.334 - .210 ...

Page 23

Lead Plastic Package-Skinny PDIP (skinny) MILIMETERS DIM MIN. MAX 4.752 A1 0.381 - B 0.356 0.558 B1 1.27 1.778 C 0.204 3.556 D 25.90 26.67 E 7.620 8.255 E1 6.223 6.604 e 2.286 ...

Page 24

SDIP Package DIM * This specification are subject to be changed without notice. TONE/PULSE DIALER WITH LCD INTERFACE SDIP MILIMETERS MIN. MAX. MIN 5. 0.381 - ...

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