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PDF EM91465D Data sheet ( Hoja de datos )
| Número de pieza | EM91465D | |
| Descripción | TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION | |
| Fabricantes | ELAN Microelectronics Corp | |
| Logotipo |  |
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EM91465 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND I.P.P. DETECT FUNCTION
GENERAL DESCRIPTION
The EM91465 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with
13 set memories. The EM91465 provide modern LCD driver's series data output port, which can display modern
function operating icons. The EM91465 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 EM91465 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.
FEATURES
• 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
ing icons.
• 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.
• 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, lock dialing functions.
• 13 set one touch or (3 set one touch and 10 set two touch) repertory memory, each one can hold data up to
16 digits.
• 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.
ORDERING INFORMATION
Versions list and function outline
VERSION
LNB KT HOLD
EM91465A
EM91465B
EM91465C
EM91465D
√ √√
√ √√
√ √√
√ √√
Note : PDP = Pocket Dialer Prevented
: I.P.P. detect = Illegal Parallel Phone Detect.
I.P.P.
√
√
√
√
LOCK
√
√
√
√
HF SDO(LCD) PDP
√
√√
√√
√
* This specification are subject to be changed without notice.
9.24.1998 1
1 page  
EM91465 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND I.P.P. DETECT FUNCTION
FUNCTION DESCRIPTIONS
Dialing signal selection
The EM91465 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. Mode
ROW1 Mode
R-Vdd 20 PPS
NR Tone
R-Vss 10 PPS
c. Flash time
ROW3 ROW4
NR NR
NR R-Vss
R-Vss
NR
R-Vss R-Vss
e. Lock number
COL2 COL3
NR NR
NR R-Vss
R-Vss
NR
R-Vss R-Vss
Tf (ms)
600
100
80
300
Lock number
none
0
9
0,9
b. M/B ratio
ROW2 MBR (%)
NR 40:60
R-Vss
33:66
d. Lock control method
COL1
Control method
R-Vdd
key lock
NR none lock
R-Vss
password lock
f. ROW5/SDO pin functions
COL5 ROW5 or SDO Pin
NR SDO
R-Vss
ROW5
(Note): If select SDO function, the memory type is
(1T*3+2T*10)
If select ROW function, the memory type is
(1T*3+2T*10) and (1T*13)
Normal dialing
Directly keying digital key on keyboard which number can be dialing output and stored in LNB memory
automatically. Operating procedure described as follow :
• To select Pulse or Tone mode.
• Off-hook or turn on HF function.
• Keying d1, d2, .. , dn. The “d” expressed digital keypad that included 1~9, *, 0, #, P, and P→T keys. The “n”
expressed unlimited.
• The numbers d1, d2, .. , dn will be dialed out in Pulse or Tone mode as selection.
LNB redial memory
Storing:
In normal dialing mode, every digital key was entry which number will be stored in LNB memory
automatically. If entry digits are more than 32 digits, the redial function of LNB memory will be disabled.
Otherwise, these numbers stored in LNB memory can be redial output.
* This specification are subject to be changed without notice.
9.24.1998 5
5 Page 
EM91465 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND I.P.P. DETECT FUNCTION
ABSOLUTE MAXIMUM RATINGS(Ambient temperature is 25 °C, all voltages referenced to VSS)
Items
Sym.
Rating
Unit
Power supply voltage
Input voltage range
Operating temperature
Storage temperature
Power consumption
VDD
VIN
TOPR
T
STO
PD
DC ELECTRICAL CHARACTERISTICS
6.0 Vdc
VSS-0.3V ~ VDD+0.3V
0 ~ 50
-55 ~ 125
500
V
V
°C
°C
mW
(Ambient temperature is 25 °C, VDD=2.5V unless otherwise noted, all voltages referenced to VSS, Fosc=3.579545 MHz)
Parameter
Sym. Min. Typ. Max. Unit Condition
Operating voltage
Operating current(HKS=0)
Memory retention current
Standby current
HKS, HFI & DRING
pins: input voltage
Xmute pin : Schmitt triggers
(input pin)
HFO & HDO pins source current
Pulse
Tone
Pulse
Tone
HKS=1
HKS=0
HKS=1
HKS=0
Idd
Imrt
Istby
ViH
ViL
VH-L
VL-H
IoH
2.0 -
2.0 -
- 0.15
- 0.3
--
--
-1
-
- 10
0.8VDD
VSS
VSS
0.7VDD
0.2
-
-
-
-
-
5.5
5.5
0.3
0.5
0.1
0.1
10
0.1
30
VDD
0.2VDD
0.3VDD
VDD
-
V
mA
uA
uA
V
V
V
mA
unload
with pull up/down
resistor * 8
HKS=1,Vdd=1V
unload
with pull up/down
resistor * 8
at idle state
Vo = 2.0 V
PO, HFO, XMUTE, RMUTE
IoL -0.2 -
- mA Vo = 0.5 V
& SDO pins: sink current
PO, XMUTE, RMUTE and SDO
IoH - - 0.01 uA Vo = Vdd
pins: leakage current
HFI pin input resistance
Rhfi
- 200
- KΩ
Vhfi = Vss
Keyboard scanning pins
IoH
2 10
50 uA
Vksn=Vss
output current (except COL4/KT)
IoL 200 400 800 µA
ksn=Vdd
COL4/KT source current
IoH 0.2 -
- mA Vo=2.0V
sink current
IoL 0.2 -
-
Vo=0.5V
DTMF pin: sink current
IoL -0.2 -
- mA Vdtmf = 0.5 V
DTMF signal DC level
Vdc 0.5 -
0.75 Vdd Vdd = 2.0V ~ 5.5V
DTMF signal: ac level
Vdtmf 142 160
○ ○ ○ ○ ○ ○ ○ ○ ○○○○○○○○○○○○
pre-emphase
Twist 1 2
○ ○ ○ ○ ○ ○ ○ ○ ○○○○○○○○○○○○
distortion
THD - -30
○ ○ ○ ○ ○ ○ ○ ○ ○○○○○○○○○○○○
load resistance
ZL 5 -
Distortion(dB)=20 log
{[V 2+V 2+V 2 ..... +V 2)1/2]/[(V 2+V 2)1/2]}
123
n
LH
VL, VH =ROW group and column group signal.
V1, V2, V3 .... Vn = Harmonic signal (BW=300Hz~3500Hz)
* This specification are subject to be changed without notice.
180
3
-23
-
mVrms
dB
dB
KΩ
Row group
Column - Row
ZL = 5 KΩ
THD < − 23dB
9.24.1998 11
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet EM91465D.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EM91465A | TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION | ELAN Microelectronics Corp |
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| EM91465C | TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION | ELAN Microelectronics Corp |
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