- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄381308 > AS2574BP (AUSTRIAMICROSYSTEMS AG) 20 NUMBER ONE TOUCH DIALLER WITH SERIAL BUS FOR DISPLAY DRIVER PDF資料下載
參數(shù)資料
| 型號： | AS2574BP |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 20 NUMBER ONE TOUCH DIALLER WITH SERIAL BUS FOR DISPLAY DRIVER |
| 中文描述： | TELEPHONE DIALER CKT, PDIP28 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-28 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 191K |
| 代理商： | AS2574BP |
Data Sheet
AS2574B
Rev. 1
1
Jan. 1995
Package
Available in 28 pin DIP and PLCC.
20 NUMBER ONE TOUCH DIALLER WITH
SERIAL BUS FOR DISPLAY DRIVER
Austria Mikro Systeme International
Key Features
K
Low operating voltage (2.5V to 5.5V)
K
Low current consumption (typ. 200
μ
A in LD mode)
K
Oscillator using ceramic resonator (681 kHz)
K
MF level independent of supply voltage
K
Direct ′wake-up′ from keyboard
K
Automatic Call Progress by direct memory key
K
Data protection with 8 digit FIFO
K
Sliding cursor protocol with comparison
K
Diode options for different PTT requirements
K
Automatic pause generation after access code
K
Temporary MF select via keyboard
K
36 digit LNR (Last Number Redial)
K
20 memories addressable with direct keys and the
2nd
key or indirect with a
MEM
key
K
Notepad
K
Serial interface to display driver AS2590
K
Consistent, simple and useable procedures
K
Input for dial tone recognizer
General Description
The AS2574B is an integrated CMOS device for feature
telephones. It is a very versatile LD/MF dialler with serial
interface to a display driver. The device is designed to be
used in a wide variety of applications together with the
companion display driver, AS2590.
The on chip RAM can contain up to 20 memories (each
with maximum 18 digits), a 36 digit Last Number Redial
(LNR) and an 18 digit notepad. Access to the 20 memo-
ries is either with direct keys, abbreviated dial code or a
combination of both. The AS2574B provides a unique
feature, Automatic Call Progress (ACP), on all memory
keys, i.e. the circuit automatically seizes the line and
waits for the dial tone and dials the number just by
pressing any of the memory keys (including LNR).
The circuit features 2 different access code procedures
to allow easy use under a PABX. A dial tone input
enables the use of a dial tone recognizer.
SDA
SCL
R5
C6
C5
C4
C3
C2
C1
AS2574B
V
DD
HS
TONE
DP
R1
R2
R3
R4
ER
Vss
TB
D
La
Lb
E
LS
CD
MR
MT
M4
M8
M7
M6
M5
M2
M1
M3
MASK
OSC1
OSC2
681kHz
MUTE
R
ENTER
2ND
#
6
3
9
0
5
2
8
*
4
1
7
M10
MEM
M9
LNR
LS
SDA
SCL
V
DD
X1
X2
V23
V13
V
LCD
BIAS
MS
Vss
A
32.768kHz
DISPLAY
MACP
MS
Flash
Ground
SPEECH
LOUDHEARING
HANDSFREE
TONE RINGER
Application
High feature telephone sets.
Direct wake-up s an AMS patented
solution providing ine seizing with
a telephone, that is entirely
powered from the telephone line,
by pressing a key in a key matrix
connected to a dialler/controller
that s constantly connected to the
line by means of a line voltage
limiter and yet maintaining a high
dc solation resistance n dle state
(on-hook).
The wake-up feature allows the
user to go off-hook by pressing a
direct memory key or a
loudspeaker key, so-called on-
hook dialling or call progress
monitoring, and thereby seize the
line.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS2578 | TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
| AS2578B | TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
| AS2578BN | TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
| AS2578BP | TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
| AS2578N | TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS2575 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller |
| AS2576 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller |
| AS25760FLF | 制造商:TT Electronics / IRC 功能描述:AS25760FLF |
| AS25760HLF | 制造商:TT Electronics / IRC 功能描述:AS25760HLF |
| AS25760JLF | 制造商:TT Electronics / IRC 功能描述:AS25760JLF |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。