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EM91410C Schematic ( PDF Datasheet ) - ELAN Microelectronics

Teilenummer EM91410C
Beschreibung TONE/PULSE SWITCHABLE DIALER
Hersteller ELAN Microelectronics
Logo ELAN Microelectronics Logo 




Gesamt 24 Seiten
EM91410C Datasheet, Funktion
EM9E1M4911041S0ESRERIEIESS
TONE/PULTSOENSEW/PUITLSCEHSAWBITLCEHDAIBALLE EDRIAWLEIRTWHILTHCDLCIDNITNETRERFFAACCEE
AND DUAANDL-DTUOANLE-TOMNEELMOEDLYODGYEGNEENRERAATTOORR
GENERAL DESCRIPTION
The EM91410 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with
10 set memories. The EM91410 provides 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, melody generator, ring detector and SDO (Serial Data
Output) functions are provided in advance version. Melody generator will output dual-tone music in line hold
duration. 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 can be displayed on LCD screen with EM32100
( or EM32116 ).
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, lock dialing functions.
• SDO function supports LCD driver and voice synthesizer to indicate dialing numbers.
• Line hold function is designed for stopping conversation temporality.
• Melody generator provides music on hold function.
• Lock function provides conventionality key lock and password lock operations.
• Ring detector is designed to prevent illegal dialing from pocket dialer.
• 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
EM91410A
√√
EM91410B
√√
EM91410C
√√
EM91410D
√√
Note : PDP = Pocket Dialer Prevented
HOLD(music)
LOCK
HF SDO(LCD) PDP
√√
√√
* This specification are subject to be changed without notice.
10.1.1997 1






EM91410C Datasheet, Funktion
EM91410 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
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.
Repertory memory
The EM91410 incorporated several sets repertory memory and each one can store number up to 16 digits.
These memories were designed to 10 sets types. In memory storing, if stored numbers are more than 16 digits
that only the previous 16 digits can be stored into specific memory. Otherwise, these numbers can be stored
entirely. After memory dialed out, the content of LNB is keeping to current data.
Storing of 10 sets memory
Indirect (two-touch) operation
Off-hook (or turn on HF function), push (ST, d1, d2, .. , dn, ST, n.) The numbers d1, d2, .. , dn will be stored
into memory location “n”. The “n” expressed digital key from 0 to 9.
Dialing (after memory dialed out, the content of LNB is keeping to current data)
Indirect (two-touch) of 10 sets memory
• To select Pulse or Tone mode.
• Off-hook (or Turn on HF function), push A, n key. The numbers that are stored in indirect memory location
“n” will be dialed out in Pulse or Tone mode as selection. The “n” expressed digital key from 0 to 9.
Pause (P) key operation
The Pause (P) key is designed to support pause operation in dialing duration. “P” key can be stored in memory
and it will occupy one digital position.
• To select Pulse or Tone mode.
• Off-hook (or turn on HF function), push (d1, d2, .. , dn, RD/P, k1, k2, .. , kn.) These numbers will be dialed
out as following sequence:
d1, d2, .. , dn, Tp, k1, k2, .. , kn.
Pulse to Tone (*/T) key operation
The Pulse to Tone (*/T) key is designed to support toll dialing (long distance call) or PABX system operation.
The “*/T” key can be stored in memory and it will occupy one digital position.
• To select Pulse mode.
• Off-hook (or turn on HF function), push d1, d2, .. , dn, */T, k1, k2, .. , kn. These numbers will be dialed out
as following sequence:
d1, d2, .. , dn, Tpt, k1, k2, .. , kn.
(pulse mode)
(tone mode)
* This specification are subject to be changed without notice.
10.1.1997 6

6 Page









EM91410C pdf, datenblatt
EM91410 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
ELECTRICAL CHARACTERISTIC
(Ambient
temperature
is
25°C,
V =2.5V
DD
unless
otherwise
noted,
all
voltages
referenced
to
Vss,Fosc=3.579545
MHz)
Parameter
Sym. Min. Typ. Max. Unit
Condition
Keyboard debounce time
Key tone signal:
frequency
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○○○○○○○○
duration
Pause time
Pulse to Tone waiting time
Flash time
Pulse rate
Make/Break ratio
Inter-digit pause time
DTMF pin: sink current
DTMF signal DC level
DTMF signal: ac level
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○○○○○○○○
pre-emphase
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○○○○○○
distortion
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○○○○○○
load resistance
Minimum tone duration
Minimum inter-tone pause
Melody output signal:
main tone ac level
Sub-tone
HD key release hold function
debounce time
SDO every bit time
Off-Hook delay time
Tdb - 20 - ms
Fkt
Tkt
Tp
Tpt
Tf
PSR
MBR
Tidp
IoL
Vdc
Vdtmf
Twist
THD
ZL
Tp
Titp
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-0.2
0.5
142
1
-
5
96
96
600
30
3.6
3.6
600
100
80
300
20
10
40:60
33:66
800
500
-
-
160
2
-30
-
98
98
- Hz
- ms
- sec.
- sec.
- Row3B, Row4B=NR, NR
- ms Row3B, Row4B=NR, R-Vss
- Row3B,Row4B=R-Vss, NR
- Row3B,Row4B=R-Vss,R-Vss
- pps Row1 = R-Vdd
- Row1 = R-Vss
- % Row2 = NR
- Row2 = R-Vss
- ms PSR = 10 pps
- PSR = 20 pps
- mA Vdtmf = 0.5 V
0.75 Vdd Vdd = 2.0V ~ 5.5V
180 mVrms Row group
3 dB Column - Row
-23 dB RL = 5 K
- KTHD < − 23dB
100
100 ms Memory dialing
Vmtac
Vstac
Thdrdb
○○○
48
○○○
37
-
(-23.3)
(dBm)
○ ○ ○ ○ ○○○○○○○○○○○
53 58 mVms
(-25.3)
(dBm)
○ ○ ○○○○○○○○○○○○○
42 47 mVms
280 - ms
Vdd =2.0V ~ 5.5V
Vdd =2.0V ~ 5.5V
Tbit 3.8 3.9 4.1 ms
Tdly - 300 - ms
* This specification are subject to be changed without notice.
10.1.1997 12

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