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AS2540Q Arkusz danych(PDF) 3 Page - ams AG

Numer części AS2540Q
Szczegółowy opis  Remote Controlled Single-Chip-Telephone
PDF  18 Pages
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Producent  AMSCO [ams AG]
Strona internetowa  http://www.ams.com
Logo AMSCO - ams AG

AS2540Q Arkusz danych(HTML) 3 Page - ams AG

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Data Sheet AS2540
austriamicrosystems
Revision 3.1
Page 3 of 18
Pin #
Symbol
Function
25
OSC
Oscillator Input
Input for ceramic resonator 3.58MHz.
Recommended type: Murata CSA 3.58MG312AM or compatible
12
AGND
Analogue Ground
Special ground for the internal amplifiers
26
RXD
Receive Data Input
Schmitt trigger input to serial interface
27
TXD
Transmit Data Output
Open drain output from serial interface
20
21
R1
R2
Keyboard
Rows
22
23
24
C1
C2
C3
Keyboard
Columns
10
ROT
Receive Output to Transformer
Output for driving a transformer with an ac impedance larger than 10k
Ω
1TIT
Transformer Input from Transformer
Single ended input for transformer
9ROH
Receive Output to Handset
Output for driving a dynamic earpiece with an impedance from 150
Ω to 300Ω
13
14
M2
M1
Microphone Inputs
Differential inputs for the microphone (electret)



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