參數(shù)資料
型號(hào)： EM91420D
廠商： ELAN Microelctronics Corp .
英文描述： Oscillator; Frequency:1MHz; Frequency Tolerance:+/- 100 ppm; Load Capacitance:50pF; Crystal Terminals:PCB Thru Hole; Supply Voltage:5V; Mounting Type:Through Hole; Number of Pins:4
中文描述： 音頻/脈沖開關(guān)的撥號(hào)器與LCD接口及雙音的旋律發(fā)電機(jī)
文件頁(yè)數(shù)： 5/24頁(yè)
文件大?。?/td> 175K
代理商： EM91420D
EM91420 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
5
* This specification are subject to be changed without notice.
10.1.1997
FUNCTION DESCRIPTIONS
Dialing signal selection
The EM91420 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
R-Vdd
NR
R-Vss
c. Flash time
ROW3
NR
NR
R-Vss
R-Vss
b. M/B ratio
ROW2
NR
R-Vss
Mode
20 PPS
Tone
10 PPS
MBR (%)
40:60
33:66
d. Lock control method
COL1
R-Vdd
NR
R-Vss
ROW4
NR
R-Vss
NR
R-Vss
Tf (ms)
600
100
80
300
Control method
key lock
none lock
password lock
e. Lock number
COL2
NR
NR
R-Vss
R-Vss
COL3
NR
R-Vss
NR
R-Vss
Lock number
none
0
9
0.9
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.
相關(guān)PDF資料
PDF描述
EM91420 Tone/Pulse Switchable Dialer with LCD Interface and Dual-Tone Melody Generator(0.15mA（脈沖）/0.3mA（音調(diào)）工作電流的音調(diào)/脈沖可轉(zhuǎn)換的撥號(hào)器（帶LCD接口和雙音旋律發(fā)生器）)
EM91421 Tone/Pulse Switchable Dialer with LCD Interface and Dual-Tone Melody Generator(0.15mA（脈沖）/0.3mA（音調(diào)）工作電流的音調(diào)/脈沖可轉(zhuǎn)換的撥號(hào)器（帶LCD接口和雙音旋律發(fā)生器）)
EM91440BP TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
EM91440DK TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
EM91440A TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EM91420DK 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
EM91440 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
EM91440A 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
EM91440A/B/C/D 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:Telephone Dialer Multi-Function Dialer
EM91440AP 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
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