EM91415 SERIES EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR AND DUAL-TONE MELODY GENERATOR GENERAL DESCRIPTION The EM91415 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with 13 set memories. The EM91415 series provide necessary functions of telephone set for application in any environment, such as Pulse dialing, Tone (DTMF) dialing, Handfree dialing, keying tone ,and lock functions. The lock function is designed to inhibit toll dialing operation. Beside this, melody generator, ring detector and SDO (Serial Data Output) functions are provided in advance version. Melody generator will output dual-tone music in line hold duration. Ring detector can prevent illegal dialing from pocket dialer. The SDO is designed to drive LCD driver and voice synthesizer. In this application, the dialing numbers can be displayed on LCD screen with EM32100 ( or EM32116 ). FEATURES • Tone/Pulse switchable. • Wide operating voltage from 2.0 V to 5.5 V. • Low operating current, 0.15 mA (Pulse) and 0.3 mA (Tone) typically. • Adding resistor on keyboard scan pin that can select many telephone specifications, such as : Pulse rate, M/B ratio, Flash time, lock dialing functions. • SDO function supports LCD driver and voice synthesizer to indicate dialing numbers. • Line hold function is designed for stopping conversation temporality. • Melody generator provides music on hold function. • Lock function provides conventionality key lock and password lock operations. • Ring detector is designed to prevent illegal dialing from pocket dialer. • 13 set one touch or (3 set one touch and 10 set two touch) repertory memory, each one can hold data up to 16 digits. • A 32-digit LNB (last number) redial memory. • Keytone function provides rapidly keying recognition. • Handfree function provides on-hook dialing and speakerphone application. • Pause and P-T time are fixed to 3.6 seconds. • Tone duration and inter-tone pause time are fixed to 98 ms. • Using 3.579545 MHz crystal or ceramic resonator. • Package forms: PDIP, skinny. ORDERING INFORMATION Versions list and function outline VERSION LNB KT EM91415A √ √ EM91415B √ √ EM91415C √ √ EM91415D √ √ Note : PDP = Pocket Dialer Prevented HOLD(music) √ √ √ √ * This specification are subject to be changed without notice. LOCK √ √ √ √ HF SDO(LCD) PDP √ √ √ √ √ √ 10.1.1997 1 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR EM91415 Pin Assignment COL5 COL4/KT COL3 COL2 COL1 XIN XOUT XMUTE VSS EM91415AP 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 EM91415BP COL5 COL4/KT COL3 COL2 COL1 XIN XOUT XMUTE VSS HFI HDO PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF 1 2 3 4 5 6 7 8 9 10 EM91415CK ROW6 COL5 COL4/KT COL3 COL2 COL1 XIN XOUT XMUTE VSS HFI 22 21 20 19 18 17 16 15 14 13 12 1 2 3 4 5 6 7 8 9 10 11 20 19 18 17 16 15 14 13 12 11 HDO PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF HFO EM91415DK ROW6 ROW5/SDO COL5 HDO COL4/KT PO COL3 ROW4 COL2 ROW3 COL1 ROW2 XIN ROW1 XOUT HKS XMUTE VDD VSS DTMF HFI HFO DRING 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 ROW5/SDO HDO PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF HFO RMUTE Keyboard Arrangement ROW1 ROW2 ROW3 ROW4 ROW5/SDO ROW6 COL1 1 4 7 */T M1 M6 COL2 2 5 8 0 M2 M7 COL3 3 6 9 # M3 M8 COL4/KT HD F A RD/P M4 M9 COL5 EM1 EM2 EM3 ST M5 M10 ROW5/SDO : Option by COL5 @ When ROW5 is selected by R option (COL5), there are 13 sets one touch memory version in EM91415C/D provided. * This specification are subject to be changed without notice. 10.1.1997 2 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR FUNCTIONAL BLOCK DIAGRAM RMUTE SDO HFO HDO COL1 COL2 COL3 COL4/KT COL5 Keyboard Row/Column programming counter Output circuit interface (column) Memory (Melody) XIN XOUT XMUTE latch & decoder D/A converter DTMF Oscillator Timing/Control circuit ~ ROW1 ROW6 Keyboard interface (Row) Pulse generator Input circuit PO VDD VDD HFI HKS DRING PIN DESCRIPTIONS Symbol ROW1~ROW6 COL1~COL3 and COL5 COL4/KT XIN and XOUT XMUTE VDD and VSS HFI HFO DTMF Function Keyboard scan pins of row group. In idle state (HKS is “High” and HFO is “Low”), these pins stay “High impedance” level to prevent power consumption. Otherwise, these pins switch to “High” level for detecting keyboard entry. These pins will output 600 Hz signal while keyboard is scanning. Keyboard scan pins of column group. In idle state, these pins stay “High impedance” level. Otherwise these pins switch to “Low” level for detecting keyboard entry. These pins will output 600 Hz signal while keyboard is scanning. The fourth column group pin of the keyboard that also provides the keytone output . Normally, this pin stays “Low” level for detecting keyboard entry. After a valid keyboard entry, this pin will output keying confirmation tone that is 600 Hz signal and 30 ms duration. To prevent signal interference, while DTMF issue, it will disable key tone output except function key. Oscillator input and output pins. A 3.579545 MHz crystal or ceramic resonator must be crossed connection to XIN and XOUT pins which generate system clock. The Tone/Pulse MUTE signal output pin that is NMOS open-drain output structure. This pin will switch to “Low” level during Tone/Pulse dialing and hold function . Otherwise, this pin stays “High impedance” level. Positive and negative power supply input pins. Recommended operating voltage from 2.0Vdc to 5.5Vdc. Handfree inputs pin which accepts falling edge signal to turn “on” or turn “off” handfree function. This pin is hysteresis input structure and built-in pull up resistor (typically 200 Kohms). Handfree outputs pin that is designed to control telephone line for on-hook dialing or control speakerphone circuit for handfree conversation. When handfree function is executed, this pin will switch to“High”. Otherwise, this pin stays “Low” level. The DTMF (Dual Tone Multi-Frequency) and music signals output pin. Normally, this pin stays “Low” level. In Tone dialing mode, this pin will output DTMF signal that is corresponding to keyboard 0 .. 9, * and # keys. Beside this, in the line hold duration, this pin will issue dual-tone music for telephone line. * This specification are subject to be changed without notice. 10.1.1997 3 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR Symbol HKS PO HDO SDO DRING RMUTE Function Control signal inputs pin that is corresponding hook switch status. When handset was left from cradle, this pin must be connected to “Low” level to operate all functions. Otherwise, this pin must be connected to “High” level to disable all function and prevent power consumption. Pulse signal outputs pin that is NMOS open-drain output structure. Normally, this pin stays “High impedance” level. In Pulse dialing mode and keypad was entry. This pin will output pulse trains signal that is corresponding to keyboard 0 .. 9 keys. Hold function output that is CMOS structure.Normally, this pin stays “Low” level. When Hold function is executing, this pin will output “High” level. This pin is designed to drive LED or peripheral circuit to indicate line is at Hold status. SDO function output that is NMOS open-drain structure. When there is a valid entry on keyboard, this pin will output a serial data. This serial data is designed to drive LCD driver to display dialing number on LCD screen or drive voice synthesizer to announce dialing number to speaker. The ring signal detect input pin which is internal pull up (built-in 100 Kohms resistor). While the Tel-ring is incoming, this pin must be connected to “Low” with delay to indicate the ringing . Otherwise, this pin must be connected to “High” level . Ring mute output pin that is NMOS open-drain structure. The RMUTE pin is designed to control microphone of handset to prevent the illegal dialing from pocket dialer. If the DRING pin is at “High” level , then Off-Hook or turn on Handfree , this pin will output “Low” level. In other words, the DRING pin is used to check the phone that receives an incoming call (DRING =Low input) or make an outgoing call (DRING= High input) . If the phone user make an outgoing call ,then RMUTE pin activated to prevent the illegal dialing from pocket dialer in the particular application.The RMUTE can be restored to “High” level when the first key entry is not the optioned lock-number . * This specification are subject to be changed without notice. 10.1.1997 4 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR FUNCTION DESCRIPTIONS Dialing signal selection The EM91415 series incorporated a special keyboard scanning function that is connecting a resistor (typically is 560 Kohms) on keyboard scan pin to select many telephone specifications. The specifications are described as following : a. Mode ROW1 Mode R-Vdd 20 PPS NR Tone R-Vss 10 PPS c. Flash time ROW3 ROW4 NR NR NR R-Vss R-Vss NR R-Vss R-Vss e. Lock number COL2 COL3 NR NR NR R-Vss R-Vss NR R-Vss R-Vss b. M/B ratio ROW2 MBR (%) NR 40:60 R-Vss 33:66 Tf (ms) 600 100 80 300 Lock number none 0 9 0.9 d. Lock control method COL1 Control method R-Vdd key lock NR none lock R-Vss password lock f. ROW5/SDO pin functions COL5 ROW5 or SDO Pin NR SDO R-Vss ROW5 (Note): If select SDO function, the memory type is (1T*3+2T*10) If select ROW function, the memory type is (1T*3+2T*10) and (1T*13) Normal dialing Directly keying digital key on keyboard which number can be dialing output and stored in LNB memory automatically. Operating procedure described as follow : • To select Pulse or Tone mode. • Off-hook or turn on HF function. • Keying d1, d2, .. , dn. The “d” expressed digital keypad that included 1~9, *, 0, #, P, and P→T keys. The “n” expressed unlimited. • The numbers d1, d2, .. , dn will be dialed out in Pulse or Tone mode as selection. LNB redial memory Storing: In normal dialing mode, every digital key was entry which number will be stored in LNB memory automatically. If entry digits are more than 32 digits, the redial function of LNB memory will be disabled. Otherwise, these numbers stored in LNB memory can be redial output. * This specification are subject to be changed without notice. 10.1.1997 5 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR Redialing: After normal dialing, directly keying F key (or On-Off hook once) and keying RD key on keyboard. The numbers that are stored into LNB memory will be dialed output. Repertory memory The EM91415 series incorporated several sets repertory memory and each one can store number up to 16 digits. In memory storing, if stored numbers are more than 16 digits that only the previous 16 digits can be stored into specific memory. Otherwise, these numbers can be stored entirely. After memory dialed out, the content of LNB is keeping to current data. Storing of 13 sets memory types Direct (one-touch) operation Off-hook (or turn on HF function), push (ST, d1, d2, .. , dn [ST], EMn or M1~M10 (ROW5 optioned).) The numbers d1, d2, .. , dn will be stored into memory location “EMn” or Mn. The “EMn” expressed emergency memory EM1 to EM3. The Mn expressed memory M1~M10. Indirect (two-touch) operation Off-hook (or turn on HF function), push (ST, d1, d2, .. , dn, ST, n.) The numbers d1, d2, .. , dn will be stored into memory location “n”. The “n” expressed digital key from 0 to 9. Dialing (after memory dialed out, the content of LNB is keeping to current data) Direct (one-touch) memory operation • To select Pulse or Tone mode. • Off-hook (or Turn on HF function), push Mn (or EMn) key. The numbers that are stored in direct memory location “Mn (or EMn)” will be dialed out in Pulse or Tone mode as selection. The “n” expressed digital number from 1~10 decided by dialers’ memory sets. Indirect (two-touch) memory operation • To select Pulse or Tone mode. • Off-hook (or Turn on HF function), push A, n key. The numbers that are stored in indirect memory location “n” will be dialed out in Pulse or Tone mode as selection. The “n” expressed digital key from 0 to 9. Pause (P) key operation The Pause (P) key is designed to support pause operation in dialing duration. “P” key can be stored in memory and it will occupy one digital position. • To select Pulse or Tone mode. • Off-hook (or turn on HF function), push (d1, d2, .. , dn, RD/P, k1, k2, .. , kn.) These numbers will be dialed out as following sequence: d1, d2, .. , dn, Tp, k1, k2, .. , kn. * This specification are subject to be changed without notice. 10.1.1997 6 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR Pulse to Tone (*/T) key operation The Pulse to Tone (*/T) key is designed to support toll dialing (long distance call) or PABX system operation. The “*/T” key can be stored in memory and it will occupy one digital position. • To select Pulse mode. • Off-hook (or turn on HF function), push d1, d2, .. , dn, */T, k1, k2, .. , kn. These numbers will be dialed out as following sequence: d1, d2, .. , dn, Tpt, k1, k2, .. , kn. (pulse mode) (tone mode) Flash (F) key operation The Flash (F) key is designed to break telephone line temporarily. After F key is depressed, this dialer will send a flash signal to break line 600 ms, 300 ms, 100 ms or 80 ms as ROW3 and ROW4 selection. Handfree (HF) function The handfree function is designed to support on-hook dialing and loudspeaker application which can be turn “on” or “off” with falling edge signal from HFI pin. During handfree function is executed, the HFO pin is switched to “high”. Otherwise the HFO pin stays “low” level. One of the following operations can turn off Handfree function (HFO pin return to “Low”). • On-off hook once. • Trigger HFI pin with falling edge signal. • Turn on Hold (HD) function. (HDO pin switched to “High”) Hold (HD) function The Hold function is designed to stop conversation temporarily. In off-hook state (or HF function is turned on), to press HD key on the keyboard, the Hold function can be turned “on” (HDO pin switched to “High”). One of the following operations can turn off Hold function (HDO pin switched to “Low”). • On-off hook once. •To press HD key over 280 ms. • Turn on Handfree (HF) function. (HFO pin switched to “High”) Special Note: A 300 ms delay time (Tdly) at the first Off-Hook or turn on Handfree that is a special designed to avoid a rapid key entry (dummy number ) in this time duration ,and a long distance call number follows. For example, Off-Hook , “3” ,............ , “0” ,1,2,3...... Dummy key Lock number key The dummy number “3” is not detected by the centered office or PABX ,but the following numbers “0” ,1,2,3... long distance call can be dialed out normally since the leading number “3” is not the Lock-number defined in EM91415 series. To prevent the unavoidable long distance call, then EM91415 inhibits the key entry during Tdly. * This specification are subject to be changed without notice. 10.1.1997 7 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR Operating flow chart HKS=Lo 1 On-hook State HF HKS=Hi HF 4 On-hook Hand-free State HKS=Hi HD HF 2 HKS=Lo Off-hook State 3 Off-hook Hand-free State HF HD HF HD HF HD 6 On-hook Hold-line State HD HKS=Hi 5 Off-hook Hold-line State HKS=Lo <Note> : HF = Handfree HD = Hold Truth table Operating state Input/Output pin level HKS PO XMUTE HFO (0) On-hook, idle state H F F L (1) Off-hook line L F F L (2) Off-hook, HF line L F F H (3) On-hook, HF line H F F H (4) Off-hook, HD line L F L L (5) On-hook, HD line H F L L Note : F=floating (high impedance); H=logic “High”; L=logic “Low” level. HDO L L L L H H Music on Hold EM91415 series built-in a melody generator to generate dual-tone music on DTMF output pin. The music is designed for telephone line at line holding. SDO (Serial Data Output) function The SDO is serial data output which format is same as UART protocol. SDO function is designed to drive LCD driver and voice synthesizer. So the dialing numbers can be display on LCD screen with EM32100 (or EM32116 ). The SDO signal consists of two start bits, six data bits and two stop bits. Each bit time is about 3.9 ms (256 Hz) and output sequences are following by start bits, data bits (LSB to MSB) and stop bits. * This specification are subject to be changed without notice. 10.1.1997 8 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR ready 0 start bits 1 bit 0 bit2 bit3 data bits bit1 bit4 bit5 1 0 stop bits SDO Keypad Encoded table: ♦ Digital key (b5,b4=0,0) keypad 1 2 3 4 5 6 7 8 9 output b3,b2,b1,b0 0001 0010 0011 0100 0101 0110 0111 1000 1001 Display 1 2 3 4 5 6 7 8 9 0 “*”/T 1010 1011 0 # P */”T” 1100 1101 1110 P ♦ Function key (b5,b4=1,0) keypad F output b3,b2,b1,b0 1111 Display clear all display ∗ Keypad,SDO format and LCD display reference table: Keypad 1 2 3 4 5 6 7 8 9 0 “*”/T # P */”T” F bit5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 bit4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 bit3 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 * This specification are subject to be changed without notice. bit2 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 bit1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 bit0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Display 1 2 3 4 5 6 7 8 9 0 P clear all display 10.1.1997 9 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR LOCK function The EM91415 series provide the LOCK function to inhibit toll dialing operation. Connecting a resistor on COL1 pin to VSS can select different LOCK control method that is conventional key lock or password lock. Also the lock number that can be selected by connecting the resistors on COL2 or COL3 pin. After power on reset, the password is fixed to 000 automatically. The lock function is disabled when the password is equal to 000 . How to setup password • Set LOCK function to password control mode. (Connects a resistor on COL1 pin to VSS) • Off hook (or turn on HF function) • Push : # , # , ops1 , ops2 , ops3 , nps1 , nps2 , nps3 , # . If the ops1~ops3 are the same with current password, then nps1~np3 will be stored in the dialer to replace current password. Otherwise, the current password can not be updated. All the numbers pressed in the password setup procedure can not be dialed out when current password is not equal to 000. If the current password are equal to 000, then only the first number “#” will be dialed out. Normal dialing : Set lock function to none lock mode (without resistor connected to COL1 pin) or set password equal to 000. In this case, the dialer is operated in normal mode and all functions work at unlimitation. Dialing via LOCK function Conventional key lock mode. (Connects a resistor on COL1 pin to VDD) • Off hook (or turn on HF function) • Keying : d1 , d2 , .. , dn . If the first number (d1) is the same with the lock number that optioned in table, then all entry numbers can not be dialed out and keyboard will be inhibited until on to off hook once again. If the first number is not equal to lock number, all the entry numbers will be dialed out. Password control mode. (Connects a resistor on COL1 pin to VSS) • Off hook (or turn on HF function) • Keying : ([ # , ps1 , ps2 , ps3 ] + telephone number.) The numbers in the [ ] symbol could be omitted. The number “#” will be inhibited when the current password is not equal to 000,and ps1 , ps2 , ps3 work at the checking state, not to be dialed out. Other descriptions are as on following : ◊ Incorrect password entry. The telephone numbers can not be dialed out. ◊ Password is omitted . If the first digit of telephone numbers is the same with the lock number, all of the telephone numbers can not be dialed out and keyboard will be inhibited until On to Off hook once again. If the first digit is not equal to the lock number then the telephone numbers will be dialed out entirely. ◊ Correct password entry. The telephone numbers can be dial out no matter what lock number is. Ring detector The Ring detector is designed to prevent illegal dialing from pocket dialer. Following the procedures ( i,ii,iii ), this dialer will detect DRING pin to control RMUTE output level. If DRING is detected a “Low” level, the RMUTE stays “High impedance”. If DRING is detected a “High” level, the RMUTE will output “Low” until * This specification are subject to be changed without notice. 10.1.1997 10 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR keyboard entry. In actual application of the RMUTE pin is recommended connection to microphone of the phone handset to prevent that the dialing signal (DTMF) is coupling by the Microphone of the phone handset. (such as pocket dialer) i. In idle state, HKS is from “High” to “Low” (pick up handset action). ii. In idle state, turn on handfree function. iii. The flash operation ( F key ). * This specification are subject to be changed without notice. 10.1.1997 11 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR ABSOLUTE MAXIMUM RATINGS(Ambient temperature is 25 °C, all voltages referenced to VSS) Items Sym. Power supply voltage Input voltage range VDD VIN Operating temperature Storage temperature Power consumption TOPR TSTO PD Rating Unit 6.0 Vdc VSS-0.3V ~ VDD+0.3V 0 ~ +50 -55 ~ 125 500 V V °C °C mW ELECTRICAL CHARACTERISTICS (Ambient temperature is 25 °C, VDD=2.5V unless otherwise noted, all voltages referenced to VSS, Fosc=3.579545 MHz) Parameter Operating voltage Operating current(HKS=0) Memory retention current Standby current HKS, HFI & DRING pins: input voltage HFO & HDO pins source current PO, HFO, XMUTE, RMUTE & SDO pins: sink current PO, XMUTE, RMUTE and SDO pins: leakage current HFI pin input resistance DRING pin input resistance Keyboard scanning pins output current (except COL4/KT) COL4/KT source current sink current Sym. Pulse Tone Pulse Tone Pulse Tone HKS=1 HKS=0 HKS=1 HKS=0 Idd Imrt Istby ViH ViL IoH IoL IoH Rhfi Rdring IoH IoL IoH IoL * This specification are subject to be changed without notice. Min. Typ. Max. Unit 2.0 2.0 - 5.5 V 5.5 0.15 0.3 0.3 0.5 mA 0.15 0.3 0.3 0.5 0.001 0.1 uA 0.001 0.1 1 10 uA -0.001 0.1 10 30 0.8Vdd Vdd V Vss 0.2Vdd 0.2 mA -0.2 mA - - 2 200 0.2 0.2 200 100 10 400 - ±0.001 uA 50 800 - KΩ KΩ uA V mA Condition unload unload with pull up/down resistor * 8 HKS=1,Vdd=1V unload with pull up/down resistor * 8 Vo = 2.0 V Vo = 0.5 V Vo = Vdd Vhfi = Vss Vdeing=Vss Vksn=Vss ksn=Vdd Vo=2.0V Vo=0.5V 10.1.1997 12 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR ELECTRICAL CHARACTERISTIC (Ambient temperature is 25°C, VDD=2.5V unless otherwise noted, all voltages referenced to Vss,Fosc=3.579545 MHz) Parameter ○ ○ ○ ○ Keyboard debounce time Key tone signal: frequency duration Pause time Pulse to Tone waiting time Flash time ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Sym. Min. Typ. Tdb - 20 Fkt Tkt Tp Tpt Tf -0.2 0.5 142 1 5 96 96 600 30 3.6 3.6 600 100 80 300 20 10 40:60 33:66 800 500 160 2 -30 98 98 Pulse rate PSR Make/Break ratio MBR Inter-digit pause time Tidp DTMF pin: sink current DTMF signal DC level DTMF signal: ac level pre-emphase distortion load resistance Minimum tone duration Minimum inter-tone pause Melody output signal: main tone ac level IoL Vdc Vdtmf Twist THD ZL Tp Titp ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ - Vstac Thdrdb 37 - (-23.3) 53 (-25.3) 42 280 Tbit Tdly 3.8 - 3.9 300 ○ ○ Vmtac Sub-tone HD key release hold function debounce time SDO every bit time Off-Hook delay time Max. Unit ○ ○ ○ 48 ○ ○ ○ ○ * This specification are subject to be changed without notice. ○ ○ ○ ○ ○ ○ ○ ms Hz ms sec. sec. Row3B, Row4B=NR, NR ms Row3B, Row4B=NR, R-Vss Row3B,Row4B=R-Vss, NR Row3B,Row4B=R-Vss,R-Vss pps Row1 = R-Vdd Row1 = R-Vss % Row2 = NR Row2 = R-Vss ms PSR = 10 pps PSR = 20 pps mA Vdtmf = 0.5 V 0.75 Vdd Vdd = 2.0V ~ 5.5V 180 mVrms Row group 3 dB Column - Row -23 dB RL = 5 KΩ KΩ THD < − 23dB 100 100 ms Memory dialing ○ ○ Condition ○ ○ ○ ○ ○ 58 ○ ○ ○ ○ 47 4.1 - ○ (dBm) mVms Vdd =2.0V ~ 5.5V (dBm) mVms Vdd =2.0V ~ 5.5V ms ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ms ms 10.1.1997 13 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR DTMF output frequency (fosc = 3.579545 MHz) Keyboard scan pin ROW1 (f1) ROW2 (f2) ROW3 (f3) ROW4 (f4) COL1 (f5) COL2 (f6) COL3 (f7) CCITT standard (Hz) 697 770 852 941 1209 1336 1477 * This specification are subject to be changed without notice. Actual output (Hz) 699.1 766.2 847.4 947.9 1215.8 1331.6 1471.8 Deviation (%) 0.30 0.49 -0.53 0.73 0.56 -0.32 -0.35 10.1.1997 14 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR TIMING DIAGRAM HKS 2 KEY IN 3 Tdb KT Tkt XMUTE HDO SDO Tm PO Tidp DTMF T T T T b m b m Tidp OSC. Tdly Hi-impedance Figure 1. Pulse mode operating timing HKS KEY IN KT 2 3 Tdb XMUTE HDO SDO PO Td Titp Titp DTMF OSC. Hi-impedance Figure 2. DTMF mode operating timing * This specification are subject to be changed without notice. 10.1.1997 15 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR LNB=2,3 HKS KEY IN RD/P Tdb KT Tkt XMUTE HDO SDO Tm PO Tidp DTMF Tidp T T T T b m b m OSC. Tdly Hi-impedance Figure 3. Pulse mode LNB redial timing LNB=2,3 HKS RD/P KEY IN Tdb KT Tkt XMUTE HDO SDO PO Td Titp Td Titp DTMF OSC. Tdly Hi-impedance Figure 4. DTMF mode LNB redial timing * This specification are subject to be changed without notice. 10.1.1997 16 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR HKS 2 KEY IN RD/P 3 KT XMUTE Tp HDO SDO PO Tidp Tidp DTMF OSC. Hi-impedance Figure 5. Pause key operating timing HKS 2 KEY IN */T 3 4 KT XMUTE Tpt HDO SDO PO DTMF OSC. Hi-impedance Figure 6. Pulse to Tone (P→T) operating timing HKS KEY IN F Tdb KT XMUTE HDO SDO PO Tf Tfp=300ms DTMF OSC. Hi-impedance Figure 7. Flash key operating timing * This specification are subject to be changed without notice. 10.1.1997 17 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR HKS 2 KEY IN Tdb KT SDO sT sT b0 0 1 0 L b1 b2 b3 b4 b5 spT spT 1 Tbit 0 0 0 0 0 1 M Hi-impedance <Note>L=LSB,M=MSB, sT=START bit time, spT=STOP bit time Figure 8. SDO operating timing HKS HD HF KEY IN HF HD HD HD HF HD HD @ 280 ms HFO Thdrdb HDO XMUTE SDO PO MELODY Hi-impedance @ : It can be triggled by extension telephone set for hold function release Figure 9. HF and HD operating timing HFI or HKS HF 5 KEY 0 KT Tdly OSC. "0" digit dialing time Hi-impedance Figure 10. Off-Hook delay time * This specification are subject to be changed without notice. 10.1.1997 18 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR Toff RING Ton DRING HKS RMUTE Figure 11. Timing of receiving an incoming call * The external ring detection circuit must send a low signal at the total ring cycle (Ton and Toff) RING DRING HKS RMUTE Figure 12. Timing of making an outgoing call * This specification are subject to be changed without notice. 10.1.1997 19 RING .1U 470 4 3 1 2 22U/50V BRIDGE PC817 4K7 27V 1U VDD 220K R47 1 VDD 1 4 7 */T M1 M6 560k 2 5 8 0 M2 M7 D6 R43 100K R37 1N4148 560k 560K 560K 560K 560k EM1 EM2 EM3 ST M5 M10 1N4148 HD F A RD/P M4 M9 560k 3 6 9 # M3 M8 560k 1 100K R48 1 47K 1N4148 D19 2 1 D5 JUMPER R68 2 100K R69 47K JUMPER DRING 2 A42 Q7 2 1 D14 1N4148 OFFHOOK 10M ONHOOK Q6 A92 R35 2K2 1 3 2 3 3 SW1A 1 1.2M BRIDGE 2 1 2K7 R49 47K 2 .1U C25 3 D7 1N4148 R52 220K R57 2 1 2 Q4 C945 R36 470K .1u C24 23 R54 22 TIP 24 SDO/ROW5 ROW6 1 HDO COL5 2 PO 220uF C31 20 BUZZER 5V1 D13 C16 .001U EM91415DK ROW3 21 4 COL4/KT 3 ROW4 COL3 19 COL1 10p 3.58MHz 6 XIN 7 XOUT 8 COL2 5 ROW2 17 HKS 18 ROW1 16 VDD XMUTE 15 10p 9 1K5 R33 C17 .01U 3 13 RMUTE DRING 14 DTMF VSS 10 HFO HFI 11 * This specification are subject to be changed without notice. 12 1 2 47U C23 50 Q18 1815 HF DRING 3 1 2 SDO R45 47K R67 Q19 1815 5 VCC 560K EM32100 CE C22 1uF 10K 3 R46 JP10 JUMPER .1uF Q9 C945 1 C21 2 JP9 EM32100 R55 470K HANDSET HANDFREE LCD DRIVER 22K R44 HDO R65 220K HDO HFO HOOK 6 SW1B 4 3 1N4148 2 2 1.5V 1 2 47K R56 3 NETWORK SPEECH 2 TO 4 LINE COL4/KT Q10 C945 ROW1 1N4148 1N4148 1 D18 2 1D17 1D16 1 2 Q14 C945 POWER AUDIO AMPLIFER CE TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR EM91415 SERIES APPLICATION CIRCUIT EM91415 Application circuit 10.1.1997 20 SDO 2 VSS VDD HFO HDO HKS 3 200k 100k 1 C945 3 2 100k 1 1 220k DIODE DIODE DIODE 2 2 2 47k 1µ 2 1 3 C945 220k SEG5 SEG4 SEG3 SEG2 SEG1 COM1 COM2 COM3 TEST2 TEST1 F32H NC 20p EM32100 MS1 MS2 SD1 HKS VDD XIN NC XOUT VSS 24/12 ENRTC NC * This specification are subject to be changed without notice. 20p 32768Hz 1 2 3 4 5 6 7 8 9 10 11 12 1 37 38 39 40 41 42 43 44 45 46 47 48 SEG6 SEG7 SEG8 SEG9 NC SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 36 35 34 33 32 31 30 29 28 27 26 25 8/10 Digits LCD Pannel SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 VEE VN VP NC VCC 24 23 22 21 20 19 18 17 16 15 14 13 1.5V .1µ .1µ TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR EM91415 SERIES EM32100 Application Circuit : Package type : QFP 48 pins or chip form provided 10.1.1997 21 * This specification are subject to be changed without notice. 10.1.1997 22 Package type : QFP 64 pins or chip form provided LINE 2 Hook Switch detection circuit SW HOOK 3 1 SDI 100k .1µ 3 C945 1 470k 2 VDD 1 2 3 CALENDAR OFF ON RTC OFF ON 1 2 3 HOUR OFF VDD 32768Kz 20p LCD110 1 2 3 24/12 ENRTC ENCLND COM3 COM2 COM1 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 20p EM32116 .1µF .1µF .1µF TEST2 BATCKOF BATLOW SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SRG6 SEG7 SEG8 SEG9 XOUT XIN VSS VC2 VC1 V3 V2 VDD HKS SDI MS2 MS1 F32HZ TEST1 .1µF SEG25 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 ON COM3 COM2 COM1 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 VDD 1.5V EM32116 Application Circuit : TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR EM91415 SERIES EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR PACKAGE INFORMATION Example : EM (1) 914XX P (2) (3) (1) ELAN MICRO. pefix (2) Type number (3) Package code: P→PDIP K→Skinny R→SDIP 18/20/28 Lead Plastic Package E1 1 D E A A1 L C B e B1 eB 18 PDIP DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 5.334 0.381 0.356 0.558 1.150 1.778 0.204 0.381 22.35 23.37 7.620 8.255 6.096 7.112 2.286 2.794 10.92 2.921 4.064 20 PDIP INCHES MILIMETERS INCHES MIN. MAX. DIM MIN. MAX. MIN. MAX. .210 A 5.334 .210 .015 A1 0.381 .015 .014 .022 B 0.356 0.558 .014 .022 .045 .070 B1 1.150 1.778 .045 .070 .008 .015 C 0.204 0.381 .008 .015 .880 .920 D 25.40 26.67 1.000 1.050 .300 .325 E 7.620 8.255 .300 .325 .240 .280 E1 6.096 7.112 .240 .280 .090 .110 e 2.286 2.794 .090 .110 .430 eB 10.92 .430 .115 .160 L 2.921 4.064 .115 .160 * This specification are subject to be changed without notice. 28 PDIP DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 6.350 0.381 0.356 0.558 1.016 1.778 0.204 0.381 35.56 37.85 15.24 15.88 13.21 14.73 2.286 2.794 17.78 2.921 5.080 INCHES MIN. MAX. .250 .015 .014 .022 .040 .070 .008 .015 1.400 1.490 .600 .625 .520 .580 .090 .110 .700 .115 .200 10.1.1997 23 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR 22/24 Lead Plastic Package-Skinny E1 1 D E A A1 L C B e B1 eB 22 PDIP (skinny) DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 4.752 0.381 0.356 0.558 1.27 1.778 0.204 3.556 25.90 26.67 7.620 8.255 6.223 6.604 2.286 2.794 8.382 10.16 2.921 4.064 24 PDIP (skinny) INCHES MIN. MAX. .180 .015 .014 .022 .050 .070 .008 .014 1.02 1.05 .300 .325 .245 .260 .090 .110 .330 .400 .115 .160 * This specification are subject to be changed without notice. DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 4.572 0.381 0.356 0.558 1.27 1.778 0.204 0.381 31.24 32.26 7.620 8.255 6.223 6.731 2.286 2.794 8.636 9.652 2.921 4.064 INCHES MIN. MAX. .180 .015 .014 .022 .050 .070 .008 .015 1.23 1.270 .300 .325 .245 .265 .090 .110 .340 .380 .115 .160 10.1.1997 24 EM91415 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR 42 SDIP Package E1 D E A A2 C A1 L D1 B e B1 eB 42 SDIP DIM A A1 A2 B B1 C D E1 e eB D1 L MILIMETERS MIN. MAX. 5.08 0.381 3.937 4.191 0.356 0.559 0.914 1.116 0.204 0.304 36.70 37.34 13.84 14.10 1.727 1.829 15.24 17.78 0 0.127 2.921 3.429 * This specification are subject to be changed without notice. INCHES MIN. MAX. 0.200 0.015 0.155 0.165 0.014 0.022 0.036 0.044 0.008 0.012 1.445 1.470 0.545 0.555 0.068 0.072 0.600 0.70 0 0.005 0.115 0.135 10.1.1997 25