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Ordering number:ENN3095A
CMOS IC
LC7367J, 7367JM
DTMF/PULSE Switchable Dialer
Overview
The LC7367J, 7367JM are DTMF/OUTPUT-PULSE dialer CMOS ICs with redial function for use in pushbutton telephones. * Operating current DTMF mode : IDD=1.0mA max / VDD=3.5V OUTPUT-PULSE mode : IDD=500A max / VDD=3.5V Continued on next page.
Features
* Low voltage CMOS process for direct operation from telephone line. * Possible to use single contact or standard 2-of-7, 2-of-8 key pad. * Possible to use color-burst crystal resonator for on-chip oscillator (fOSC=3.58MHz). * Possible to use either mode select pin (P/T) or function key (4x4 matrix key) to select DTMF mode/OUTPUTPULSE mode. * Mode change with MC key is made in one direction onlyfrom pulse mode to tone mode. * Delivers 12 DTMF signals when in DTMF mode. * On-chip 31-digit redial memory. * Possible to provide mix redial (31 digits-PAUSE-MC) of DTMF/OUTPUT-PULSE mode. * Either auto pause select (4s.xn) or manual release available for mode select standby time during redial operation. * Output pulse make rate of OUTPUT-PULSE mode : Pinselectable (33.2% or 40%). * Output pulse rate of OUTPUT-PULSE mode : Pinselelctable (10pps or 20pps). * On-chip circuit to prevent malfunction due to noise pulse caused by key entry. * Key touch tone (pacifier tone) output capability. OUTPUT-PULSE mode : 1243Hz/50ms * Supply voltage / operating temperature DTMF mode : VDD=2.0 to 6.0V / Ta=-30 to +70C OUTPUT-PULSE mode : VDD=1.5 to 6.0V / Ta=-30 to +70C
Package Dimensions
unit:mm 3059-DIP22S
[LC7367J]
22 12
7.62 6.4
1 21.2
11
0.95
0.48
1.78
1.7
0.51min 3.25 3.3 3.9max
SANYO : DIP22S
unit:mm 3073A-MFP30
[LC7367JM]
15.2 30 16
0.4
1.0
(0.6)
0.1 (2.25)
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other parameters) listed in products specifications of any and all SANYO products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
51001TN (KT)/D1694TH/2280TA, TS (AF) No.3095-1/12
2.45max
SANYO : MFP30
0.65
1
15
0.25
9.2 10.5
7.9
0.25
LC7367J, 7367JM
Continued from preceding page. * Data retention current IDR0.5A / VDD=1.0V * Package LC7367J : Dual-in-line shrink 22-pin package LC7367JM : Miniflat 30-pin package
Pin Assignment
Equivalent Circuit Block Diagram
No.3095-2/12
LC7367J, 7367JM
Pin Description
Pin Name VDD VSS XIN
( ) : Pin number of MFP
I/O Configuration Power supply pin. Function 11 (15) 12 (16) 9 (13) Used to generate the reference frequency. Uses a crystal resonator of 3.579545MHz. With the feedback resistor and capacitors contained to form the OSC circuit, a crystal resonator is simply connected across the pins. When using a ceramic resonator, a capacitor of approximately 30pF must be connected to each pin.
Pin No.
XOUT
10 (14)
R1 to R4 C1 to C4
1 to 4 22 to 19 1 to 3 6 25 28 to 30
Row and column input pin. High-active input. Contains a P-channel transistor for keyboard scan and an Nchannel transistor for pull-down. When in the ON-HOOK state, the P-channel transistor is turned OFF and the N-channel transistor is turned ON.
OFF-HOOK
5 (7)
HOOK SW input.
H-level=ON-HOOK L-level=OFF-HOOK
DPR
6 (8) 7 (9) 8 (10) 17 (23) 16 (22) 15 (21) 13 (17)
P/T
BMR
DP MUTE1 MUTE2 MODE-OUT
Dial pulse rate select input. H-level=20pps L-level=10pps Pulse/tone select input. H-level=Pulse mode L-level=DTMF mode Make rate select input. H-level=33.2% L-level=40% Dial pulse output. Mute output. Operates at the OUTPUT-PULSE mode. Capable of being wired-ORed with MUTE2. Mute output. Operates at the DTMF mode. Capable of being wired-ORed with MUTE1. DTMF/OUTPUT-PULSE mode output. OUTPUT-PULSE mode=L-level DTMF mode=H-impedance When a key is pushed at the OUTPUT-PULSE mode, the KTONE (pacifier tone) of 1243Hz/50ms is output.
K-TONE
18 (24)
DTMF
14 (18)
The DTMF signal is output. NPN transistor-used emitter follower output.
Key Assignment
1 4 7 2 5 8 0 C1 C2 3 6 9 # C3 F P RD MC C4 R1 R2 R3 R4 F P RD MC : Flash : Pause = : Redial, pause release : Pulse=tone select # = RD P When in OUTPUT-PULSE mode
No.3095-3/12
LC7367J, 7367JM Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Maximum input voltage Maximum output voltage Allowable power dissipation Minimum load resistance Operating temperature Storage temperature Symbol VDD VIN VOUT Pd max RL min Topr Tstg Ta=70C Across DTMF and VSS pin Conditions Ratings -0.3 to +7 -0.3 to VDD+0.3 -0.3 to VDD+0.3 300 100 -30 to +70 -40 to +125 Unit V V V mW C C
Allowable Operating Conditions at Ta = -30 to +70C, VDD=1.5 to 6.0V
Parameter Supply voltage Input H-level voltage Input L-level voltage Key contact resistance Keyboard capacitance Resonator specification Symbol VDDP VDDT VIH VIL RKI CKI f RS Conditions OUTPUT-PULSE mode DTMF mode All input pins All input pins Ratings min 1.5 2.0
0.7VDD
typ
max 6.0 6.0 VDD
0.3VDD
Unit V V V V k pF
VSS
3.0 330 3.579545MHz 0.7% <100
Electrical Characteristics at Ta = 25C, VDD=1.5 to 6.0V
Parameter Operating current Quiescent Current Data retention voltage Data retention current Input H-level current Input L-level current Symbol IDDP IDDT IDD(ST) VDR IDR IIH IIL IIHK Key pin current IOHK Output OFF-state leakage current Output H-level pin voltage IOFF VOH Conditions OUTPUT-PULSE mode, output open, VDD=3.5V DTMF mode, output open, VDD=3.5V OFF-HOOK pin=VDD, VDD=1.5 to 6.0V, output open VDD=1V (OFF-HOOK, DPR, P/T, BMR) pin, VIH=VDD (OFF-HOOK, DPR, P/T, BMR) pin, VIL=VSS VDD=1.5V, VIH=VDD VDD=6.0V, VIH=VDD VDD=1.5V, VOH=0.8VDD VDD=6.0V, VOH=0.8VDD V0=VDD, VDD=6V, output OFF, (DP, MUTE1, MUTE2, MODE-OUT) K-TONE : VDD=1.5V, IOH=-125A K-TONE : VDD=3.5V, IOH=-500A (K-TONE, DP, MUTE1, MUTE2, MODE-OUT pin) : VDD=1.5V, IOL=125A (K-TONE, DP, MUTE1, MUTE2, MODE-OUT pin) : VDD=3.5V, IOL=500A
VDD-0.5
Ratings min typ 0.3 0.5 max 0.5 1.0 1 1 0.5 1 -1 20 300 -50 -700 1
Unit mA mA A V A A A A A A A A V V
VDD-1 0.4 0.4
V V
Output L-level pin voltage
VOL
AC Characteristics at Ta = 25C, VDD=1.5 to 6.0V, fOSC=3.579545MHz
Parameter Key debounce time K-TONE frequency K-TONE output time Auto pause time Single tone output Tone output ratio Tone output distortion Oscillation start time DTMF output time DTMF interdigit pause Flash time Symbol TKD fKT TKT TAP VOR dBCR %DIS TSTART TMFON TMFOFF TFLASH ROW TONE output, VDD=3.5V, RL=10k VDD=2 to 6V, RL=10k VDD=2.5 to 6V, RL=10k, f=300 to 3400Hz VDD=2 to 6V, RL=10k, f=300 to 3400Hz VDD=1.7 to 6V VDD=3.5V 97.6 100.6 605 170 1 Conditions Ratings min 10.8 1243 50.9 3.99 205 2 3 7 10 20 8 typ max 11.6 Unit ms Hz ms s 245 mVrms dB % % ms ms ms ms ms
No.3095-4/12
LC7367J, 7367JM
* Dial Pulse Output
fosc=3.579545MHz
Pin DPR VSS VDD VSS VDD Pin BMR VDD VDD VSS VSS Dial Pulse Rate 9.94PPS 19.89PPS 9.94PPS 19.89PPS Interdigit Pause 838.1ms 519.6ms 844.8ms 523.0ms Make Ratio 33.2% 33.2% 40% 40%
* DTMF Output
fosc=3.579545MHz
Input R1 R2 R3 R4 C1 C2 C3 Output Frequency (Hz) Standard 697 770 852 941 1209 1336 1477 LC7367J, 7367JM 699.1 766.2 847.4 948.0 1215.9 1331.7 1471.9 Deviation (%) +0.30 -0.49 -0.54 +0.74 +0.57 -0.32 -0.35
* Redial Operation
fosc=3.579545MHz
Parameter DTMF Output Interdigit Pause Period Time 1st Digit 97.6ms 100.6ms 198.2ms 2nd Digit onward 100.6ms 100.6ms 201.2ms
Timing Charts (1) OUTPUT-PULSE mode
No.3095-5/12
LC7367J, 7367JM
(2) Tone mode
(3) Pulse tone mix (P/T='H')
(4) Pulse tone (P/T='H')
No.3095-6/12
LC7367J, 7367JM
(5) Timing of flash
(6) Mix dial and redial (key entry available after redial) by P/T input (slide SW, stc.)
* 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).
* 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.
No.3095-7/12
LC7367J, 7367JM
Key Operation (1) Normal dial Off-hook D1 D2 * * * * Dn Redial Off-hook RD (2) PBX dial Off-hook D0 P D1 D2 * * * * Dn Redial Off-hook RD (3) Pulse/tone mix In case where there is no pause during mode select. Off-hook D1 D2 MC D3 D4 (P/T=H) Redial pulse Tone RD RD D3, D4 Off-hook D1, D2
Puse Tone
TM In case where there are pauses during mode select. Off-hook D1 D2 P MC D3 D4 (P/T=H) Ridial pulse Tone 4sec Off-hook RD D1, D2 - D3, D4
Puse Tone
(Note)
a When in OUTPUT-PULSE mode P = X RD = # b Pause : 4s. / 1 push of P , 8s. / 2 pushes of P , 4xns. / n pushes of P c For pause release, push RD . All pauses can be also released by pushing
RD
once.
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 DTMF 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 32 digits or more is prohibited. * Dial data (1 to 0, , #), 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). Continued on next page.
No.3095-8/12
LC7367J, 7367JM
Continued from preceding page. 3) Key and P/T Pin Descriptions Keys 1 to 0 These are dial data keys. Data is written in the RD memory. TM , # Keys In DTMF mode : and # dial data key In OUT-PULSE mode : = pause key (P) # = redial key (RD) The and # keys for DTMF 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. 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
C1 R1 R2 R3 R4 1 4 7 C2 2 5 8 0 C3 3 6 9 # C4 F P RD MC
Key Debounce Time * A key 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.
No.3095-9/12
LC7367J, 7367JM
4) MC Data Writing in RD Memory * 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. * 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. TM 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 IC test time. * Test mode setting and release methods BMR pin input
OFF-HOOK pin input + built-in power-on reset pulse * Test mode summary The internal divider circuit (72 divisions) is bypassed. Key scan frequency ...... 72 times Dial pulse rate .............. 72 times 4-second pause ............. 1/72
No.3095-10/12
LC7367J, 7367JM
Sample Application Circuit (Pin numbers are for DIP package)
No.3095-11/12
LC7367J, 7367JM
Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products(including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be expor ted without obtaining the expor t license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not guaranteed 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.
This catalog provides information as of May, 2001. Specifications and information herein are subject to change without notice.
PS No.3095-12/12

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