EM91220 SERIES EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE GENERAL DESCRIPTION The EM91220 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with 20-set memories . The EM91220 series provides necessary functions of telephone set for application in any environment, such as Pulse dialing, Tone (DTMF) dialing, Handfree dialing, keying tone , mute and pulse mute functions. Beside this, SDO (Serial Data Output) functions is provided in advance version that 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, Pause time, P-T wait time and keyboard type. • SDO function supports LCD driver and voice synthesizer to indicate dialing numbers. • Handfree function provides on-hook dialing and speakerphone application. • 20-set three touch repertory memory, each one can store data up to 16 digits. • A 32-digit LNB (last number) redial memory. • A 32-digit SAVE redial memory. • Keytone function provides rapidly keying recognition. • Pulse mute function supports pulse dialing application. • Using 3.579545 MHz crystal or ceramic resonator. • Package forms: PDIP, skinny. ORDERING INFORMATION Versions list VERSION EM91220A EM91220B EM91220C LNB √ √ √ KT √ √ √ SAVE √ √ √ * This specification are subject to be changed without notice. HF SDO(LCD) √ √ √ PMUTE √ √ √ 10.1.1997 1 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE EM91220 Pin Assignment EM91220BP EM91220AP COL5 COL4/KT COL3 COL2 COL1 XIN XOUT XMUTE VSS 18 17 16 15 14 13 12 11 10 1 2 3 4 5 6 7 8 9 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 COL5 COL4/KT COL3 COL2 COL1 XIN XOUT XMUTE VSS HFI PM PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF PM PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF HFO EM91220CK NC COL5 COL4/KT COL3 COL2 COL1 XIN XOUT XMUTE VSS HFI 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 18 17 16 15 14 13 12 SDO PM PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF HFO Keyboard Arrangement Type A ROW1 ROW2 ROW3 ROW4 COL1 1 4 7 */T Type B COL2 2 5 8 0 COL3 3 6 9 # COL4/KT SAVE F A RD/P COL5 ROW1 ROW2 ROW3 ROW4 ST COL1 1 4 7 * COL2 2 5 8 0 COL3 3 6 9 # COL4/KT SAVE F A RD/P COL5 P→T ST FUNCTIONAL BLOCK DIAGRAM SDO HFO PM XMUTE COL1 COL2 COL3 COL4/KT COL5 Keyboard Output circuit interface (column) Memory (Melody) XIN XOUT Row/Column programming counter latch & decoder D/A converter DTMF Oscillator Timing/Control circuit ~ ROW1 ROW4 Keyboard interface (Row) Input circuit Pulse generator PO VDD VDD HFI * This specification are subject to be changed without notice. HKS 10.1.1997 2 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE PIN DESCRIPTIONS Symbol ROW1~ROW4 COL1~COL3 and COL5 COL4/KT XIN and XOUT XMUTE VDD and VSS HFI HFO DTMF HKS PO PM SDO NC 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. While DTMF output, the key tone will be disabled. 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. 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) 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. 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. Pulse signal outputs pin that is CMOS inverter output structure. Normally, this pin stays “Low” level. During pulse signal dialing or flash function executing, this pin will switch to “High” level to control the external circuit. 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. No connection. * This specification are subject to be changed without notice. 10.1.1997 3 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE FUNCTION DESCRIPTIONS Dialing signal selection The EM91220 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 Tf (ms) NR NR 600 NR R-Vss 100 R-Vss NR 80 R-Vss R-Vss 300 e. Pause time and P-T wait time COL2 Tp (sec) Tpt (ms) NR 3.6 3.6 R-Vss 2.0 2.0 b. M/B ratio ROW2 MBR (%) NR 40:60 R-Vss 33:66 d. DTMF signal COL1 Td (ms) R-Vdd 90 NR 98 R-Vss 83 Titp (ms) 90 98 83 f. Keyboard operate type COL3 Type NR A R-Vss B 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. 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. SAVE redial memory The SAVE meomry is designed in EM91220 series to support 32 digits capacity buffer for second redial, pager, Memory and other system applications. 10.1.1997 * This specification are subject to be changed without notice. 4 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE Method 1 • To select Pulse or Tone mode. • Off-hook (or turn on HF function), push d1, d2, .. , dn. The numbers d1, d2, .. , dn will be dialed out in Pulse or Tone mode as selection. • After dn had been dialed out and push [ST], Save key. If the keying numbers are more than 32 digits that content of SAVE memory can not be updated. Otherwise, these numbers will be stored into SAVE memory. In the [] key allows to be omitted. Method 2 Off-hook (or turn on HF function), push ST, d1, d2, .. , dn, [ST], Save. If the keying numbers are not over 32 digits, the numbers d1, d2, .. , dn will be stored in SAVE redial memory automatically. Dialing : • To select Pulse or Tone mode. • Off-hook (or turn on HF function), push Save key. The numbers stored in SAVE memory will be dialed out in Pulse or Tone mode as selection. Repertory memory The EM91220 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 20 sets memory types Indirect (three-touch) operation Off-hook (or turn on HF function), push ST, d1, d2, .. , dn, ST, n, n. The numbers d1, d2, .. , dn will be stored into memory location “n n”. The “n n” expressed digital number from 01 to 20. Dialing (after memory dialed out, the content of LNB is keeping to current data) Indirect (three-touch) memory types • To select Pulse or Tone mode. • Off-hook (or Turn on HF function), push A, n , n key. The numbers that are stored in indirect memory location “n n” will be dialed out in Pulse or Tone mode as selection . The “n n” expressed digital number from 01 to 20. 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 5 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE Pulse to Tone (*/T or P-T) key operation The Pulse to Tone (*/T or P-T) key is designed to support toll dialing (long distance call) or PABX system operation. The "*/T (or P-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, (or P-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. Truth table Operating state HKS H L L H (0) On-hook, idle state (1) Off-hook line (2) Off-hook, HF line (3) On-hook, HF line PO F F F F Input/Output pin level XMUTE PM F L F L F L F L HFO L L H H Note : F=floating (high impedance); H=logic “High”; L=logic “Low” level. 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. ready 0 start bits 1 bit 0 bit1 * This specification are subject to be changed without notice. bit2 bit3 data bits bit4 bit5 1 0 stop bits 10.1.1997 6 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE SDO Keypad Encoded table: ♦ Digital key (b5,b4=0,0) keypad output 1 2 3 4 5 6 7 b3,b2,b1,b0 0001 0010 0011 0100 0101 0110 0111 Display 1 2 3 4 5 6 7 ♦ Function key (b5,b4=1,0) keypad ST output b3,b2,b1,b0 0000 Display S TORE ♦ Function key (b5,b4=1,1) keypad RD output b3,b2,b1,b0 1101 Display RD 8 9 0 1000 1001 1010 8 9 0 HF A F 1010 Speaker 1110 A 1111 clear all display “*”/T # 1011 1100 P */”T”or P-T 1101 P 1110 Save 1110 SAVE <Note> : The display of LCD panel “ST”,”HF”,”A”,”RD”,”Save” is corresponding to EM32116 with flag types. * This specification are subject to be changed without notice. 10.1.1997 7 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE ∗ Keypad,SDO format and LCD display reference table: Keypad 1 2 3 4 5 6 7 8 9 0 “*”/T # P */”T” or P-T ST HF A F RD SAVE bit5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 bit4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 bit3 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 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 0 0 1 1 1 1 bit1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 1 0 1 bit0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 0 0 1 1 0 Display 1 2 3 4 5 6 7 8 9 0 P STORE Speaker Auto clear all display RD SAVE 10.1.1997 8 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE 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 pins: input voltage HFO & PM pins source current PO, HFO, XMUTE, & PM, SDO pins: sink current PO, XMUTE and SDO pins: leakage current HFI 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 Min. Typ. 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 IoH - - Rhfi IoH IoL IoH IoL 2 200 0.2 0.2 200 10 400 - * This specification are subject to be changed without notice. Max. Unit ±0.001 uA 50 800 - KΩ uA 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 Vksn=Vss Vksn=Vdd Vo=2.0V Vo=0.5V 10.1.1997 9 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE ELECTRICAL CHARACTERISTIC (Ambient temperature is 25°C, VDD=2.5V unless otherwise noted, all voltages referenced to Vss,Fosc=3.579545 MHz) Parameter ○ ○ ○ ○ Sym. Min. Typ. Tdb - 20 Flash time Fkt Tkt Tp Tpt Tf Flash pause time Pulse rate Tfp 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 IoL Vdc Vdtmf Twist THD ZL -0.2 0.5 142 1 5 96 88 81 96 88 81 3.8 600 30 3.6 2 600 100 80 300 300 20 10 40:60 33:66 800 500 160 2 -30 98 90 83 98 90 83 3.9 Keyboard debounce time Key tone signal: frequency present duration Pause time and pulse to tone ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Minimum tone duration TD Minimum inter-tone pause Titp SDO every bit time Tbit Max. Unit - Condition ms Hz ms sec. COL2=NR sec. COL2=R-Vss Row3, Row4=NR, NR ms Row3, Row4=NR, R-Vss Row3, Row4=R-Vss, NR Row3, Row4=R-Vss,R-Vss ms 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 92 ms Memory dialing 85 100 92 ms Memory dialing 85 4.1 ms 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 10 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE TIMING DIAGRAM HKS KEY IN 2 3 Tdb KT Tkt XMUTE PM SDO Tsdo Tm PO Tidp DTMF T T T T b m b m Tidp OSC. Hi-impedance Figure 1. Pulse mode operating timing HKS KEY IN KT 2 3 Tdb XMUTE PM 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 11 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE LNB=2,3 HKS KEY IN RD Tdb KT Tkt XMUTE PM SDO Tm PO Tidp DTMF Tidp T T T T b m b m OSC. Hi-impedance Figure 3. Pulse mode LNB redial timing LNB=2,3 HKS RD KEY IN Tdb KT XMUTE PM SDO Tsdo PO Td Titp Td Titp DTMF OSC. Hi-impedance Figure 4. DTMF mode LNB redial timing * This specification are subject to be changed without notice. 10.1.1997 12 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE HKS 2 KEY IN RD/P 3 KT Tp XMUTE PM SDO PO Tidp Tidp DTMF OSC. Hi-impedance Figure 5. Pause key operating timing HKS 2 KEY IN */T 3 4 KT XMUTE Tpt PM SDO PO DTMF OSC. Hi-impedance Figure 6. Pulse to Tone (P→T) operating timing HKS KEY IN F Tdb KT XMUTE PM 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 13 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE 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 KEY IN HF HF HF HF HF HF HF XMUTE HFO PM SDO PO DTMF Hi-impedance Figure 9. HF operating timing * This specification are subject to be changed without notice. 10.1.1997 14 JUMPER VDD RING JUMPER 9 8 0 7 */T 560k # 6 5 4 3 2 D5 1 560k 560K 560K 560K 47K R43 100K R37 1N4148 D6 560k RD/P A F ST SAVE (P→T) 1 100K R48 1N4148 JUMPER R68 2 100K JUMPER 2 A42 Q7 R69 47K 2 1 D14 1N4148 OFFHOOK Q6 A92 R35 2K2 1 3 2 3 3 1 220K R47 1 VDD 560k BRIDGE 2 10M ONHOOK 2 1 2 .1U C25 3 D7 1N4148 R52 220K 2K7 R49 Q4 C945 1 2 R36 470K .1u C24 21 SW1A 1 220uF C31 19 R54 22 SDO NC 1 20 PM COL5 2 PO COL4/KT 5V1 D13 C16 .001U EM91220CK BUZZER 3 ROW4 18 COL2 5 10p 3.58MHz COL1 6 XIN 7 TIP 8 COL3 4 ROW3 17 ROW2 16 ROW1 15 HKS XOUT 14 VDD XMUTE 13 10p 9 1K5 R33 12 DTMF VSS 10 HFO HFI * This specification are subject to be changed without notice. 11 C17 .01U 3 3 HF 50 2 Q18 1815 1 Q19 1815 6 SW1B 4 VCC 560K CE JP9 R55 470K JUMPER EM32100 HANDSET HANDFREE LCD DRIVER HFO HOOK SDO R67 1 2 5 1.5V 1D17 1D16 PM 1N4148 1N4148 2 2 3 NETWORK SPEECH 2 TO 4 LINE 47K R56 1 2 Q14 C945 CE AMPLIFER POWER AUDIO TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE EM91220 SERIES APPLICATION CIRCUIT 10.1.1997 15 SDO 2 VSS VDD HFO HDO HKS 3 200k 2 100k 1 C945 3 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 EM91220 SERIES EM32100 Application Circuit : Package type : QFP 48 pins or chip form provided 10.1.1997 16 * This specification are subject to be changed without notice. 10.1.1997 17 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 EM91220 SERIES EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE PACKAGE INFORMATION Example : EM (1) 91220 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 MIN. MAX. DIM MIN. MAX. .210 A 5.334 .015 A1 0.381 .014 .022 B 0.356 0.558 .045 .070 B1 1.150 1.778 .008 .015 C 0.204 0.381 .880 .920 D 25.40 26.67 .300 .325 E 7.620 8.255 .240 .280 E1 6.096 7.112 .090 .110 e 2.286 2.794 .430 eB 10.92 .115 .160 L 2.921 4.064 * This specification are subject to be changed without notice. 28 PDIP INCHES MIN. MAX. .210 .015 .014 .022 .045 .070 .008 .015 1.000 1.050 .300 .325 .240 .280 .090 .110 .430 .115 .160 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 18 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE 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 19 EM91220 SERIES TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE 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 20