- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄362691 > EM91420D (ELAN Microelctronics Corp .) 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 PDF資料下載
參數(shù)資料
| 型號： | 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/脈沖開關的撥號器與LCD接口及雙音的旋律發(fā)電機 |
| 文件頁數(shù)： | 4/24頁 |
| 文件大?。?/td> | 175K |
| 代理商： | EM91420D |
EM91420 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
4
* This specification are subject to be changed without notice.
10.1.1997
Symbol
Function
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 disable all function and
prevent power consumption.
Pulse signal outputs pin that is NMOS open-drain output structure. Normally, this pin
stays “High impedance” level. In Pulse dialing mode and keypad was entry. This pin
will output pulse trains signal that is corresponding to keyboard 0 .. 9 keys.
Hold function output that is CMOS structure.Normally, this pin stays “Low” level.
When Hold function is executing, this pin will output “High” level. This pin is
designed to drive LED or peripheral circuit to indicate line is at Hold status.
SDO function output that is NMOS open-drain structure. When there is a valid entry
on keyboard, this pin will output a serial data. This serial data is designed to drive LCD
driver to display dialing number on LCD screen or drive voice synthesizer to announce
dialing number to speaker.
The ring signal detect input pin which is internal pull up (built-in 100 Kohms resistor).
While the Tel-ring is incoming, this pin must be connected to “Low” with delay to
indicate the ringing . Otherwise, this pin must be connected to “High” level .
Ring mute output pin that is NMOS open-drain structure. The RMUTE pin is
designed to control microphone of handset to prevent the illegal dialing from pocket
dialer. If the DRING pin is at “High” level , then Off-Hook or turn on Handfree , this
pin will output “Low” level. In other words, the DRING pin is used to check the phone
that receives an incoming call (DRING =Low input) or make an outgoing call
(DRING= High input) . If the phone user make an outgoing call ,then RMUTE pin
activated to prevent the illegal dialing from pocket dialer in the particular application.The
RMUTE can be restored to “High” level when the first key entry is not the optioned
lock-number .
No connection.
PO
HDO
SDO
DRING
RMUTE
NC
相關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）工作電流的音調/脈沖可轉換的撥號器（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）工作電流的音調/脈沖可轉換的撥號器（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 |
相關代理商/技術參數(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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。