LC7367

LC7367J SANYO | Alldatasheet

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(1) Low voltage CMOS process for direct operation from telephone line. (2) Possible to use single contact or standard 2-of-7, 2-of-8 key pad. (3) Possible to use color-burst crystal resonator for on-chip oscillator (fogc = 3.58MHz) (4) Possible to use either mode select pin (P/T) or function key (4X4 matrix key) to select DIMF mode/OUTPUT-PULSE mode. (5) Mode change with MC key is made in one direction only - from pulse mode to tone mode. (6) Delivers 12 DIMF signals when in DIMF mode. (7) On-chip 31-digit redial memory (8) Possible to provide mix redial (31 digits-PAUSE-MC) of DIMF/OUTPUT-PULSE mode (9) Either auto pause select (4sec. Xn) or manual release available for mode select standby time during redial operation. (10) Output pulse make rate of OUTPUT-PULSE mode : Pin-selectable (33.2% or 40%) (11) Output pulse rate of OUTPUT-PULSE mode : Pin-selectable (10pps or 20pps) (12) On-chip circuit to prevent malfunction due to noise pulse caused by key entry. (13) Key touch tone (pacifier tone) output capability OUTPUT-PULSE mode : 1243Hz/50ms (14) Supply voltage / operating temperature DIMF mode: Vpp=2.0 to 6.0V/Ta= —30 to +70°C OUTPUT-PULSE mode: Vpp=1.5 to 6.0V/Ta=—30 to +70°C (15) Operating current DTMF mode: Ipp=1.0mA max / Vpp=3.5V OUTPUT-PULSE mode: Ipp=500yA max/ Vpp=3.5V (16) Data retention current IppS0.5pA/ Vpp=1.0V (17) Package LC7367J : Dual-in-line shrink 22-pin package LC7367JM: Miniflat 30-pin package (unit : mm) (unit : mm) 22 2 0.25 Tt PaneaaaaaABEA Tl Oe 4 2}||a4 fs os 2.2 y| ? en ca gy TUBEUBEBEUEBHBE, OWA CAAA ls us 15.3 $ TT J i a ny 4 f PCUTELTCOBTUSD oth ay Bess SANYO: ‘DIP225. wr ~ SANYO: HFP30 SANYO Electric Co.,Ltd. Semiconductor Business Headquarters TOKYO OFFICE Tokyo Bldg.,1-10,1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN . D1694TH /2280TA,TS (AF) No.3095-1/12

LC73673, 7367JM ee Pin Assignment 8 8 ¥ ii E 8g “ ~ . eB Eg en 3 EE ® 3335 teh BE $8 ssovesta Bey yf Fs

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ee ee er ee Zz & gwlw—~ 2 om thee ee Ze a Mriew reeepbsasge CE SUSSPRSEYTEDS , 6 5 Equivalent Circuit Block Diagram Yoo Yss : a 12 (|): Pin number of MFP Vay {iy ‘i Read . oP : a [asi el fl eg “mig : = ] i MUTED At iS] Logie Divider a Rio 4 {t Timer ’ 0) LS K— Rio <p i ! a I 4 9 Reo <J BK) Control vogie FT t— ah ‘Int 3 : 6) Z : i | | Move ouT co b 3 : H a 9 re a7) as Do? a ae <] - Tone ae 2) US| z Generator any Clo <] dy GS Go <] a oy \\ AAAA a) 9 wo 7 os de be ZZ 5 pee ae » g tea 3 lhe IS No.3095-2/12 :

LC7367J, 7367JM SSeS Pin Description ( ): Pin number of MFP 115) Power supply pin. 2a) Xin 9 Used to generate the reference frequency. (13) Uses a crystal resonator of 3.579545MHz. xouT! With the feedback resistor and capacitors contained : = to form the OSC circuit, a crystal resonator is simply EK connected across the pins. Xour 10 When using a ceramic resonator, a capacitor of (14) XIN | be approximately 30pF must be connected to each pin. Ri to R4 1to4 Row and column input pin. High-active input. C1 toC4 22 to 19 Yoo Contains a P-channel transistor for keyboard scan 1to3 7 and an N-channel transistor for pull-down.

6 When in the ON-HOOK state, the P-channel

25 transistor is turned OFF and the N-channel 28 to 30. IK transistor is turned ON. OFF-HOOK 5 HOOK SW input. “H” level= ON-HOOK a) “L” level = OF F-HOOK 6 Dial pulse rate select input. (8) “H” level=20pps “L” level = 10pps P/T 7 Pulse/tone select input. (9) —_r— “H” level=Pulse mode | “L" level=DTMF mode BMR 8 Make rate select input. (10) “H” level =33.2% “L” level=40% 17 (23) Dial pulse output. MUTE1 16 Yoo Mute output. Operates at the OUTPUT-PULSE (22) mode. Capable of being wired-ORed with MUTE2. MUTE2 15 Mute output. Operates at the DIMF mode. Capable (21) of being wired-ORed with MUTE1. MODE-OUT 13 4 | DTIMF/OUTPUT-PULSE mode output. a7) OUTPUT-PULSE mode=“L” level DTMF mode =“H” impedance K-TONE 18 | When a key is pushed at the OUTPUT-PULSE (24) mode, the K-TONE (pacifier tone) of 1243Hz/50ms is D> output. DTMF 14 Yoo The DTMF signal is output. (18) | NPN transistor-used emitter follower output. No.3095-3/12

LC7367J, 7367JM Oh Key Assignment ToT Ow | When in OUTPUT-PULSE mode Sooo ueoEe co c2 C3 ck Absolute Maximum Ratings at Ta=25°C unit Maximum Supply Voltage Vpp -0.3to+7 v Maximum Input Voltage Vin —0.3 to Vpp + 0.3 Vv Maximum Output Voltage Vout —0.3 to Vpp + 0.3 v Allowable Power Dissipation Pd max Ta=70°C 300 mW Minimum Load Resistance Ri min Across DTMF and Vgs pin 100 Q Operating Temperature Topr -30to+70 °C Storage Temperature Tstg —40 to +125 °c Allowable Operating Conditions at Ta= — 30 to + 70°C, Vpp=1.5 to 6.0V min typ max unit Supply Voltage Vppp OUTPUT-PULSE mode 1.5 6.0 Vv Vopt DTMF mode 2.0 60 OV ‘H’-Level Input Voltage Vin All input pins 0.7Vpp Vpp =O ‘L'-Level Input Voltage Vib Allinput pins Vss 0.3Vpp_—s« VV Key Contact Resistance Rx 3.0 kQ Keyboard Capacitance Cx 3300 pF Resonator Specification f 3.579545MHz+ 0.7% Rg <1002 Electrical Characteristics at Ta=25°C,Vpp=1.5 to 6.0V min typ max unit Operating Current Ippp OUTPUT-PULSE mode,output open, 03 0.5 mA Vpp=3.5V Ippt DTMF mode,output open, 0.5 10 mA Vpp=3.5V Quiescent Current Ippst) OFF-HOOK pin=Vpp,Vpp= 1.5 to 6.0V, 1 pA output open Data Retention Voltage Vpr 1 v Data Retention Current Ipr Vpp=1V 0.5 pA ‘H’-Level Input Current yy (OFF-HOOK, DPR,P/T,BMR) pin, 1 pA Vin=Vpp ‘L’-LevelInputCurrent = I, (OFF-HOOK,DPR,P/T,BMR) pin, -1 pA Vit= Vss Key Pin Current lnk Vpp=1.5V,Vi=Vpp 20 «pA Vpp=6.0V, Vin = Vpp 300 pA lonk Vpp=1.5V,Von=0.8Vpp -50 pA Vpp=8.0V, Vou =0.8Vpp -700 pA Output OFF-State Jorr V0=Vpp.Vpp=6V,output OFF, 1 pA Leakage Current (DP, MUTE1,MUTE2,MODE-OUT) Continued on next page. No.3095-4/12

LC7367J, 7367JM Continued from preceding page. min typ max unit ‘H’-Level Output Von K-TONE: Vpp=1.5V, Vpp-0.5 v Pin Voltage lon= —125pA K-TONE : Vpp=3.5V Vpp-1 Vv Tou = —500pA ‘L'-Level Output Voi [(K-TONE,DP, Vpp=1.5V,IoL=125pA 04 #V Pin Voltage [nore sore, Vpp=3.5V,JoL=500pA 0.4 v MODE-OUT) pin AC Characteristics at Ta= 25°C, Vpp= 1.5 to 6.0V fogc =3.579545MHz min typ max unit Key Debounce Time Tp 10.8 11.6 ms K-TONE Frequency far 1243 Hz K-TONE Output Time Txr 50.9 ms Auto Pause Time Tap 3.99 s Single Tone Output Vor ROW TONE output, Vpp=3.5V, 170 205 «245 mVrms Rp =10kQ Tone Output Ratio dgcr Vpp=2to6V,RL=10kQ 1 2 3 «dB Tone Output Distortion %pis Vpp=2.5 to 6V,RL= 10kQ, 7 % f= 300 to 3400Hz Vpp=2 to 6V,Ry=10kQ, 10% f=300 to 3400Hz Oscillation Start Time Tsrart Vpp=1.7 to 6V 20 ms Vpp=3.5V 8 ms DTMF Output Time TMFoN 97.6 ms DTMF Interdigit Pause TMFrorr 100.6 ms Flash Time TFLASH 605 ms @ Dial Pulse Output arte ee ee ences es OS EES 2 STIS4SMZ f Noo ft Nop 19.89 pes | 519.6 ms | 382 wo V SS tN SS | 9294 PPS | 8448 ms | 40M : ee { VSS. | 19289 PPS | 523-0 ms | OK @ DIMF Output ee fosc=3.579545MHz Input Output Frequency (Hz) Deviation (%) Lae ‘LC7367J,7367IM, R14 H 697 699.1 +0.30 pe | 0 766.2 | -0.49 a3] 852 Tare | 0.54 rae ah es — 948.0 | 40.74 | a | 1209 1215.9 +0.57_ _c2 1336 1331.7 | -- 0.32 cs | 1477 1471.9 |_ 9-35 © Redial Operation oe f osc=3.579545MHz Parameter Time IstDigit [2nd Digit onvord DIMF Output |" 97.6 ns _| 100.6 as Interdigit Pause 100.6 ms 100.6 ms Period [198.2 ms | 201.2 ms No.3095-5/12

LC7367J, 7367JM Timing Charts (1) OUTPUT-PULSE mode FOR : KEY 2 3 P i fa tims Make ase 1 | Moke I tims sec =o i 7 7 re en |e TATE! (2) Tone mode ° al m= OFF HOOK KEY 2 3 P 1 RO} ._ = a (3) Pulse — tone mix (P/T =‘H’) OFF HOOK ney 2 7 MC FY z lf RD a Some ” No.3095-6/12

: LC7367), 7367JM ee (4) Pulse > tone (P/T =‘H’) OFF OK KEY 2 MC F) Mc 2 Ro RO ° | more tT OTMF Za 4 AZ) ILJ2 [ fT MUTE? MOE OUT a | | | 2nd MC key-in is invalid. (5) Timing of flash KEY F Mims e05me oF | 15ms | 1s2ms. qVF Same state as after off-hook (6) Mix dial and redial (key entry available after redial) by P/T input (slide SW, etc.) OFF ROOK Prt MODE OUT i KEY INPUT 1 2 3 4 | isl 5 cn i rs | Murer a ee OTMF s|_Ja sLJoL__Js] MOTEZ © Even when the tone mode (P/T SW : “Tone”) is entered at the OFF-HOOK state, the OUTPUT-PULSE mode can be entered (P/T SW : “Pulse”). © The output mode provided when redialing is the one provided when dialed previously (regardless of the P/T SW position when the RD key is pushed). Continued on next page. No.3095-7/12

LC7367J, 7367JM = ———v— Continued from preceding page. OFF HOOK wT . MODE OUT KEY INPUT p F) a) fe RO Jao 3 rs | rs | MUTED OTe? © The mode after completion of redialing is set again by the P/T SW position provided when redialing is completed. Since the DP, MUTE1, MUTE2, MODE-OUT outputs are of the Nch open drain type, the output transistor OFF-state (“H” impedance) provides “H” level. Likewise, since the DTMF output is of the emitter follower type, the output transistor OFF-state (“H” impedance) provides “L” level. Key Operation (1) Normal dial Off hook > tae Redial Off-hook (2) PBX dial Redial . Off-hook > (3) Pulse/tone mix @ In case where there is no pause during mode select ons (5) [2] [fs] err Redial Pulse Tone , Off-hook > D1,02 03-04 Pulse Tone @ In case where there are pauses during mode select ce [=] ] 5] EE] or Redial Pulse Tone 4sec Off-hook —> 01,02—p3-04 Pulse Tone (Note) |@ When in OUTPUT-PULSE mode i = [x] = [#] ® Pause : 4sec. /1 push of [r] , 8sec. /2 pushes of fe] , 4xXnsec, /n pushes of [P] © For pause release, push[ Ro] . All pauses can be also released by pushing[ >] once. No.3095-8/12

LC7367J, 7367JM Function Specifications The LC7367J, 7367JM are capable of pulse dial, DTMF dial and also both types of dialing mixed, as well as redial of these. 1) Dial Output Specifications . ¢ The output pulse make ratio of OUT-PULSE mode can be set at 33.2 or 40% using the BMR pin. ¢ The output pulse rate of OUT-PULSE mode can be set at 20 or 10pps using the DPR pin. © 12 types of DTMF dial signals (1 to 0,%, #) are generated in DT[MF mode. ¢ DTMF signals are output continuously when the keys are pressed. ¢ A minimum output for DTMF of approximately 100ms, and also about 100ms for minimum IDP are guaranteed. 2) Summary of Operation ¢ Key input data is written consecutively in the 31 digit buffer memory (also used as RD memory; hereinafter referred to as RD memory). ¢ The dial data in the RD memory is read out according to the set dial rate, and is output at the DP and DTMF pins, ¢ Dial output of more than 31 digits is enabled by rewriting the key data from the top (address 0) of the RD memory. « Because of this, the correct dial does not remain in the RD memory for 32 digits or more, so redial for <1 82 digits or more is prohibited. * Dial data (1 to 0,5<, #), mode change data (MC) and pause data (P) are written in the RD memory as 1 digit each. Dial output mode switching can be performed using the MC key on the key matrix or the P/T input pin. ¢ The dial output can be stopped for 4 seconds with the pause key (P). * One-touch redial can be done using the redial key (RD). 3) Key and P/T Pin Descriptions © Keys 1to0 These are dial data keys. Data is written in the RD memory. ®@ &, # Keys In DTMF mode: > and # dial data key In OUT-PULSE mode: >¢ =pause key (P) #=redial key (RD) The > and # keys for DIMF mode and >¢ key in the OUT-PULSE mode are for writing data in the RD memory. @ F Key (flash key) + The same operation as for 0.6-second hooking is performed when DP output is turned on for 0.6 second, + Redial can be performed after flash operation. @ RD Key (redial key) 1. Redial operation When the RD key is pressed after hooking (OFF-HOOK pin) or F key operation, the number that immediately precedes will be redialed. Redial is prohibited if the number has 32 digits or more. 2. Pause release The Pause key provides 4-second pause and releases pause attendant on the mode change (MC key, P/T pin). Even if there is a succession of 2 digits or more of pause data in the RD memory, it will all be released. © P Key (pause key) . + Stops dial output for 4 seconds. - Data is written in the RD memory. Continued on next page. No.3095-9/12

LC7367J, 7367JM Continued from preceding page. © MC Key (mode change key) + Switches dial mode from OUT-PULSE mode to DTMF mode. . + The mode cannot be switched from DTMF mode to OUT-PULSE mode. @ P/T Pin + Input to indicate dial mode H=OUT-PULSE mode L=DTMF (tone) mode - The mode can be switched between DTMF and pulse mode differ from in case of MC key. + Mix dialing by P/T pin switching during dialing is possible. MD data is written in the RD memory at this time. - At OUT-PULSE mode, if the MC key is pressed during dialing, data is written in the RD memory as MC data. - At OUT-PULSE mode, pressing the first digit (after OFF-HOOK) MC key switches the dial mode, but data is not written in the RD memory. Key Assignment cl C2 C3 C4 m fo feds |e mfalslele| m [fe fe [oo] «fete Lebel Key Debounce Time ¢ Akey debounce circuit is built in key input to prevent misoperation caused by switch chattering. Input is valid when on continuously for 11ms or more, and is invalid when off continuously for 11ms or more. Key input Effective key input 4) MC Data Writing in RD Memory e After the MC data is stored once in the MC data flag, it is written in the RD memory when another data key (1 to 0,><, #, P) is pressed. e The MC data flag is reset with hooking and the P key. « The contents of the MC data flag are canceled and are not written in the RD memory when the P/T pin is switched as P>T—P. 5) Notes on Dial Specifications @ Pause operation during mode switching When there is no P data before or after MC data 1, Normal dial Mode change is done and DTMF data key is started during dial pulse output: ~ After dial pulse ends, pause begins, and the DTMF signal is output with release using the RD key. DTMF data keyed in after dial pulse output : ~ DTMF signal is output with key-in. 2. Redial for the above After dial pulse ends, pause begins, and the DTMF signal is output with release using the RD key. Continued on next page. No.3095-10/12

LC7367J, 7367JM ee Continued from preceding page. ; @ Key input during redial This is ignored except for the F key and the RD key during pause operation. 6) Test Mode A high speed test mode is provided in order to reduce the LSI test time. © Test mode setting and release methods BMR pin input Lr t Test mode setting OFF-HOOK pin input —_—_ + built-in power-on reset pulse Test mode release « Test mode summary The internal divider circuit (72 divisions) is bypassed. II No products descrived or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. WM Anyone purchasing any products described or contained herein for an above-mentioned use shall: ® Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD,, its affiliates, subsidiaries and distributors and all their officers and employees, joint'y and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: @® Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO, LTO, its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally, Wi Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guarant- eed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. , No.3095-11/12 |

LC7367), 7367JM Sample Application Circuit ~ (Pin numbers are for DIP package.) 3 EA a 3 ° . Ag 8 EE eB g oy HE 2b] 2 ee | Sh—. sg Se = fete al 8 ee < 825 Ble ras) [| “AS*ATZz Fr de | RB 38 i Te at OF —_—— | SCOR REE 3H 2]3 18 eeezbesiz ie |) tf a DAWES SISSY tte) BITS] | it. ni 1! | & *fe900'0 [+ [o [2 [2 s | aaa : g fe) SL (el Ea) Eki) | da —_ Ps cH “eg | 3 [8 No.3095-12/12