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EM91220A 데이터시트 PDF




ELAN Microelectronics Corp에서 제조한 전자 부품 EM91220A은 전자 산업 및 응용 분야에서
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부품번호 EM91220A 기능
기능 TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
제조업체 ELAN Microelectronics Corp
로고 ELAN Microelectronics Corp 로고


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EM91220A 데이터시트, 핀배열, 회로
EM9E1M2921022S0ESRERIEIESS
TONE/PULTSOENSEW/PUITLSCEHSAWBITLCEHDAIBALLE EDRIAWLEIRTWHILTHCDLCIDNITNETRERFFAACCEE
GENERAL DESCRIPTION
The EM91220 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with
20-set memories . The EM91220 series provides necessary functions of telephone set for application in any
environment, such as Pulse dialing, Tone (DTMF) dialing, Handfree dialing, keying tone , mute and pulse
mute functions. Beside this, SDO (Serial Data Output) functions is provided in advance version that 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, Pause time, P-T wait time and keyboard type.
• SDO function supports LCD driver and voice synthesizer to indicate dialing numbers.
• Handfree function provides on-hook dialing and speakerphone application.
• 20-set three touch repertory memory, each one can store data up to 16 digits.
• A 32-digit LNB (last number) redial memory.
• A 32-digit SAVE redial memory.
• Keytone function provides rapidly keying recognition.
• Pulse mute function supports pulse dialing application.
• Using 3.579545 MHz crystal or ceramic resonator.
• Package forms: PDIP, skinny.
ORDERING INFORMATION
Versions list
VERSION
EM91220A
EM91220B
EM91220C
LNB KT SAVE
√√
√√
√√
HF SDO(LCD) PMUTE
√√
√√
* This specification are subject to be changed without notice.
10.1.1997 1




EM91220A pdf, 반도체, 판매, 대치품
EM91220 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
FUNCTION DESCRIPTIONS
Dialing signal selection
The EM91220 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 Tf (ms)
NR NR
600
NR R-Vss
100
R-Vss
NR
80
R-Vss R-Vss
300
e. Pause time and P-T wait time
COL2 Tp (sec) Tpt (ms)
NR 3.6
3.6
R-Vss
2.0
2.0
b. M/B ratio
ROW2 MBR (%)
NR 40:60
R-Vss
33:66
d. DTMF signal
COL1
Td (ms)
R-Vdd
90
NR 98
R-Vss
83
Titp (ms)
90
98
83
f. Keyboard operate type
COL3
Type
NR A
R-Vss
B
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 PT 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.
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.
SAVE redial memory
The SAVE meomry is designed in EM91220 series to support 32 digits capacity buffer for second redial,
pager, Memory and other system applications.
* This specification are subject to be changed without notice.
10.1.1997 4

4페이지










EM91220A 전자부품, 판매, 대치품
EM91220 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
SDO Keypad Encoded table:
Digital key (b5,b4=0,0)
keypad
1234567
output
b3,b2,b1,b0 0001 0010 0011 0100 0101 0110 0111
Display
1234567
8 90
1000 1001 1010
8 90
“*”/T #
1011 1100

P */”T”or P-T
1101 1110
P
Function key (b5,b4=1,0)
keypad
ST
output
b3,b2,b1,b0
0000
Display S
TORE
HF
1010
Speaker
A
1110
A
F
1111
clear all display
Function key (b5,b4=1,1)
keypad
RD
output
b3,b2,b1,b0
1101
Display
RD
Save
1110
SAVE
<Note> : The display of LCD panel “ST”,”HF”,”A”,”RD”,”Save” is corresponding to EM32116 with flag types.
* This specification are subject to be changed without notice.
10.1.1997 7

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관련 데이터시트

부품번호상세설명 및 기능제조사
EM91220

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

ELAN Microelectronics Corp
ELAN Microelectronics Corp
EM91220A

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

ELAN Microelectronics Corp
ELAN Microelectronics Corp

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