as2574b austriamicrosystems, as2574b Datasheet
as2574b
Related parts for as2574b
as2574b Summary of contents
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... NUMBER ONE TOUCH DIALLER WITH SERIAL BUS FOR DISPLAY DRIVER General Description The AS2574B is an integrated CMOS device for feature telephones 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 ...
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... Open Pause duration 4.1 sec Low If a high is not detected within 8 sec., the circuit is reset * High If the pin is high for > 1.15 sec., the pause is termi- nated and the dialling continued. Noise immunity > AS2574B for less than 2 sec., the Jan. 1995 ...
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... COLUMN ENTER 6 M2 RECALL 9 2ND M3 # MUTE M4 M9 M10 MEM 3 AS2574B Only in speech mode Error (%) 0. off-hook state all keys are M5 enabled (CD = high) M6 Enabled only when off-hook M7 Enabled also M8 when ACP is active (diode 5 inserted) Enabled when CD = high Jan. 1995 ...
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... Select location by keeping Enter key depressed while entering the desired location (M1…M10, 2nd M1…M10, or MEM 0…9) 4 Release Enter key to finish 5 Continue with and 4 for storing further numbers. Only the first 18 digits/data will be stored when copying more than 18 digits/data in a memory. 4 AS2574B Jan. 1995 ...
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... If new entries match the previous LNR RAM contents, pressing the LNR key will dial out the remaining digits. If there is an error in matching, the LNR will be inhibited until next On-hook, and the LNR RAM will contain the new number. 5 AS2574B Jan. 1995 ...
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... Data Sheet Serial Interface The AS2574B supports a serial bus. The protocol defines device that sends data onto the bus as a transmitter, and the receiving device as the receiver. The AS2574B is controlling the transfer and hence the master. The display driver, AS2590, being controlled is the slave ...
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... Code no 29 Pause Code no 17 Memories Memories Programming Code no 28 when both keys are released Setting clock Code Code Code no 1 RECALL Code no 19 Privacy MUTE Code no 22/23 Clearing LNR Code no 27 Code AS2574B Jan. 1995 ...
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... AS2574B No diode diode Standard ...
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... In MF mode * and # are automatically stored in LNR RAM. Rev. 1 Standby state, no keys activated Lifting handset (HS = High) or pressing LS key Replacing handset (HS = Low) or repressing LS key Idle Idle Off-hook Key in digits Entries stored in LNR RAM Entries are dialled out Speech mode On-hook Idle 9 AS2574B Jan. 1995 ...
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... Digits are entered in LNR RAM Enter keep Enter depressed 2nd Direct dial (M11 - 20) release Enter The content of the LNR RAM stored is stored in the selected memory. Speech mode Speech mode or idle 10 AS2574B Digit 0 MEM (access codes) Digit 0-9 (M11 - 20) Code no 28 Jan. 1995 ...
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... Reset timer Y DT high 1.15 sec N Rev 2nd D D Pause 4 sec Hi pin L Executing pause Starting timer Speech mode N Timer overflow Postdialling Y 11 AS2574B Idle Off-hook D Diode Direct dial LNR D (M1 - 10) DIALLING Pause N N All digits dialled ? Y available D Jan. 1995 ...
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... Off-hook Start timer Start timer Time-out 8 sec Reset timer Pause Dialling 4 sec Hi Pause pin L All digits dialled ? Executing pause Starting timer Speech mode N Timer overflow Postdialling available Y 12 AS2574B N LNR D Off-hook Off-hook Start timer Start timer Jan. 1995 D ...
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... Data Sheet Privacy Mute MT output will go low. Change of Dialling hook state Rev. 1 (code 23) Speech mode Mute key Speech mode MT high Mute key (code 23) MT output will go low. Speech mode 13 AS2574B (code 22) Jan. 1995 ...
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... Key in digits LD default Rev All further entries are NOT stored in LNR RAM but buffered in FIFO. The LNR RAM will contain the number entered before pressing the * key and the mode change code. On-hook Idle Off-hook Speech mode LD default 14 AS2574B Jan. 1995 ...
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... Setting Clock (in display driver) keep Enter Enter depressed Rev. 1 Speech mode Speech mode or idle keep Enter Enter depressed keep Enter keep Enter depressed depressed Press # release Enter Key in hours (2 digits) Key in min. (2 digits) Speech mode Speech mode or idle or idle 15 AS2574B __:__ 18:__ 18:31 Jan. 1995 ...
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... Replace handset means HS going low. 5) Lifting the handset during ACP will change the hook state to POT, however, the dialling will continue uneffected. Rev Idle Diode Monitor or Handsfree AS2574B Y LS On-hook M Off-hook Automatic Call Progress ( ) (ACP) Dialling finished N Y Jan. 1995 ...
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... Timing Diagrammes The timing diagrammes do not show the correct scaling only the sequence. P.O. Whole keyboard enabled Diode scanning Monitor State CD LS key DP Whole keyboard enabled 2 sec key DP Rev. 1 < 2 sec. 2 sec. < 2 sec. 2 sec. 17 AS2574B < 2 sec. Jan. 1995 ...
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... Mute key has been activated, otherwise low) MF Dialling Osc Key entry Mask Tone DP = depending Mute key (high when Mute key has been activated, otherwise low) Rev Tidp Tpre Tpo 3 Tmo Ttd Titp Tho 18 AS2574B Tho Tidp Tb Tpo Tpre 1 Tmo Tho Jan. 1995 ...
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... Mute key (high when Mute key has been activated, otherwise low) Ground Loop (GL) Osc Key entry Mask pre Pause = depending on Mute key (high when Mute key has been activated, otherwise low) Rev Tpo Tho Tgl Tpo 19 AS2574B Jan. 1995 ...
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... Automatic Dialling MF (content of LNR is Flash and Flash is stored as access code) Osc Key entry LNR MT MR Mask DP GL Tone Pause Tpo = depending on Mute key (high when Mute key has been activated, otherwise low) Rev. 1 Tap Tidp Tap 20 AS2574B Tho Tmo Jan. 1995 ...
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... Fosc 681 = 3.0V. DD Min Typ I DD 200 0. Vil V SS Vih 0.7xV DD Iil Iih Iol 1.5 Ioh 1 Rhs 1 Rcd 1 Isl 20 Ish 20 21 AS2574B 0. Max Unit Condition 70 C 5.5 V 5.5 V kHz Max Unit Condition Outputs unloaded 250 =1.8V; note1 Note 1 0 ...
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... Tg 500 Tap 4 4.1 7.9 8 1.15 1.2 Tmo 182 200 Tho 18 Fb 700 Vtb -13 -11 Ttb 80 Titb1 7 8 Titp2 1.8 2 Tto 7 AS2574B Max Unit Condition sec - 9.4 dBm 2.8 dBm dBr note Note Note Note 2 pps 5% ms ...
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... Vdd OSC1 TONE SCL TB SDA Vss MASK Ordering Information Part number AS2574B P AS2574B N Vss AS2574B Vdd 1 28 TONE TB Vss MASK Package 28 pin DIL 28 pin PLCC Jan ...
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... Austria Mikro Systeme International, Schloss Premstätten, 8141 Unterpremstätten, Austria. Trademarks Registered . All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. Rev AS2574B Jan. 1995 ...