W91630 SERIES 10-MEMORY TONE/PULSE DIALER WITH REDIAL FUNCTION GENERAL DESCRIPTION The W91630 series are Si-gate CMOS ICs that provide the signals needed for either pulse or tone dialing. The W91630 series features a ten-channel, 32-digit automatic dialing memory. FEATURES • DTMF/Pulse switchable dialer • 32-digit redial memory • Ten by 32 digit two-touch indirect repertory memory • Mixed dialing, cascade dialing allowed • Pulse-to-tone (P→T) keypad for long distance call operation • Easy operation with redial, flash, pause and P→T keypads • Pause, pulse-to-tone (P→T) can be stored as a digit in memory • Tone output duration: as long as key is depressed or 90 mS minimum • Minimum intertone pause: 90 mS • Flash time: 100/300 mS • Uses 4 × 5 keyboard • On-chip power-on reset • Uses 3.579545 MHz crystal or ceramic resonator • Packaged in 18-pin DIP • The different dialers in the W91630 series are shown in the following table: TYPE NO. DIALING RATE PAUSE M/B FLASH W91630 10 ppS 4 sec 1:2 300 mS W91631 W91632 2:3 10 ppS 4 sec W91633 1:2 100 mS 2:3 -1- Publication Release Date: June 1996 Revision A3 W91630 SERIES PIN CONFIGURATION C1 1 18 R4 C2 2 17 R3 C3 3 16 R2 C4 4 15 R1 P MUTE 5 14 V DD VSS 6 13 MODE XT 7 12 DTMF XT 8 11 DP/C5 T/P MUTE 9 10 HKS PIN DESCRIPTION SYMBOL PIN NO. I/O FUNCTION ColumnRow Inputs 1−4 & 15−18 I Keyboard inputs are designed for use with either a standard 4 × 5 keyboard or an inexpensive single contact (Form A) keyboard. Electronic input from a µC can also be used. Valid key entry is defined by a connection between a single row and a single column. XT, XT 7, 8 I, O T/P MUTE 9 O The T/P MUTE is a conventional CMOS inverter output. It is low during pulse and tone mode dialing sequence and flash break; otherwise, it remains high. MODE 13 I Pulling the mode pin to VSS place the dialer in tone mode. Pull to VDD or leave floating: Pulse mode (10 ppS, M/B = 2:3 or 1:2) A built-in inverter provides oscillation with an inexpensive 3.579545 MHz crystal or ceramic resonator. -2- W91630 SERIES Pin Description, continued SYMBOL PIN NO. I/O FUNCTION HKS 10 I Hook switch input. Conventional CMOS input with an internal protection diode and a pull-high resistor to VDD. HKS = VDD: On-hook state. Chip in sleep mode, no operation. HKS = VSS: Off-hook state. Chip enabled for normal operation. During dialing, this input ignores HKS = VDD for durations of less than 150 mS (i.e., dialing is not terminated). DP /C5 11 O Open drain dialing pulse output (Figure 1). Flash key causes DP /C5 to be active in both tone mode and pulse mode. DTMF 12 O During pulse dialing, maintains low state at all times. In tone mode, outputs a dual or single tone. Detailed timing diagram for tone mode is shown in Figure 2(a, b). OUTPUT FREQUENCY Specified Actual Error % +0.28 R1 697 699 R2 770 766 -0.52 R3 852 848 -0.47 R4 941 948 C1 1209 1216 +0.74 +0.57 C2 1336 1332 -0.30 C3 1477 1472 -0.34 VDD, VSS 14, 6 I Power input pins. P MUTE 5 O The P MUTE is a conventional CMOS inverter output. It is high during pulse dialing sequence and flash break. Otherwise, it remains low. -3- Publication Release Date: June 1996 Revision A3 W91630 SERIES BLOCK DIAGRAM XT XT HKS SYSTEM CLOCK GENERATOR MODE READ/WRITE COUNTER CONTROL LOGIC ROW (R1 to R4) T/P MUTE PULSE CONTROL LOGIC KEYBOARD INTERFACE RAM COLUMN DTMF DP/C5 LOCATION LATCH (C1 to C4) ROW & COLUMN PROGRAMMABLE COUNTER D/A CONVERTER P MUTE DATA LATCH & DECODER FUNCTIONAL DESCRIPTION Keyboard Operation C1 C2 C3 C4 DP / C5 1 2 3 S P→T R1 4 5 6 F P R2 7 8 9 A R3 * 0 # R R4 • S: Store function key • F: Flash key • P→T: In pulse mode, this key works as Pulse→Tone key • R: The redial function can be excuted only as first key-in after off-hook. • A: Indirect repertory dialing key • P: Pause key -4- W91630 SERIES Normal Dialing OFF HOOK , D1 , D2 , ..., Dn 1. D1, D2, ..., Dn will be dialed out. 2. Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits in normal dialing. 3. Dialing mode is determined at the on/off hook transition. Redialing 1. OFF HOOK , R The R , D1 , D2 , ..., Dn , Busy, Come ON HOOK , OFF HOOK key executes the redialing function. 2. Redial content = D1, D2, ..., Dn OFF HOOK , R , D1' , D2' , , P→T D3' , D4' a. D1, D2, ..., Dn, D1', D2', P→T, D3', D4' will be dialed out. b. Redial register is changed to D1, D2, ..., Dn, D1', D2'. 3. Ln content = D1, D2, P→T, D3, D4 OFF HOOK 4. , A then ON HOOK , OFF HOOK A Busy, then , , Ln , will dial out D1, D2, P→T, D3, D4 OFF HOOK , ON HOOK Lm , , , A R , OFF HOOK will dial out D1, D2, P→T, D3, D4. Ln , , R A , Lp a. The digits stored in Lm, Ln, and Lp will be dialed out after the R key is pressed. b. If length oversteps 32 digits, redial is inhibited. c. Redial register stores not only normal dialing digits but also repertory or mixed dialed numbers. d. Redialing is valid for first key-in only. Number Store 1. OFF HOOK , S , D1 , D2 , ..., Dn , A , Ln , ON HOOK a. D1, D2, ..., Dn will be stored in memory location Ln but will not be dialed out. b. Ln = 0 to 9; Dn = 0 to 9, *, #, Pause, P→T. -5- Publication Release Date: June 1996 Revision A3 W91630 SERIES c. The store mode is released to the initial state only when all store operations are finished. There is no need to perform , ON HOOK For example S D1 then S , D1' then S , ..., is still available. , , D2' D2 , , D3' , OFF HOOK D3 , D4 , D4' , , A Ln , A to begin a second store operation. A , Lp , Ln , , But the following sequence is not valid: S then 2. , D1 S , , OFF HOOK D2 , D3 R , A , , S , , D4 , , Ln R , A , Ln , ON HOOK a. Redial content is transferred to memory Ln. b. When the last number was dialed from redial memory, the content of the redial memory cannot be transferred to a memory location. For example, if the redial content is 1 2 3 4 5 + A 3, it cannot be transferred to a memory location, and the content of Ln will not be modified. Memory Clear OFF HOOK , S , A , Ln , S , A , Lp , ... The Ln, Lp, etc., memories will be cleared. Repertory Dialing OFF HOOK , A , Ln 1. The digits stored in Ln will be dialed out. 2. The type of output signal is determined by the mode switch. 3. The redial register content is the content of location number Ln. 4. If the content of Ln is 1, 2, 3, P→T, 4, 5, 6, the redial function will execute the P¡÷T function and the system will change to tone mode. Access Pause OFF HOOK , D1 , D2 , P , D3 , ..., Dn 1. The pause function can be stored in memory. 2. The pause function may be executed in normal dialing, redialing, or memory dialing (4.0 sec/pause). 3. The pause function can be stored as the first digit in memory. 4. The pause time depends on the number of times the P key is depressed. For example, if the sequence 1, 2, P, P, 4, 5, 6 is keyed in, then the pause time is 8 seconds. 5. The pause function timing diagram is shown in Figure 3. -6- W91630 SERIES Pulse-to-tone (P→T) 1. OFF HOOK , D1 , D2 , ..., Dn , , P→T D1' , D2' , ..., Dn' a. If the mode switch is set to pulse mode, then the output signal will be as follows: D1, D2, ..., Dn, no pause, D1', D2', ..., Dn' (Pulse) (Tone) In this case, the device can be reset to pulse mode only by going on-hook, because tone mode remains enabled after the digits have been dialed out. b. If the mode switch is set to tone mode, then the output signal will be as follows: D1, D2, ..., Dn, no pause, D1', D2', ..., Dn' (Tone) (Tone) c. The P→T key may be pressed before the first sequence is dialed out completely. 2. OFF HOOK , R If the mode switch is set to pulse mode, then the output signal will be as follows: D1, D2, ..., Dn, no pause, D1', D2', ..., Dn' (Pulse) (Tone) 3. OFF HOOK , A , Ln a. The P→T key can be stored in memory as a digit. The digits after the P→T key are also sent in repertory dialing. b. The P→T key does not stop dialing (no pause). c. The number stored in memory location Ln will be transferred to the redial register. d. The P→T function timing diagram is shown in Figure 4. Flash OFF HOOK 1. The F , D1 , D2 , D3 , F , D4 , D5 , D6 key may be pressed before digits D1, D2, D3 are sent completely. Digits D4, D5, D6 may be pressed during the 100/300 mS. flash period. 2. The flash key cannot be stored as a digit in memory or in the redial register. 3. OFF HOOK Ln then , S , ON HOOK D1 , , D2 , OFF HOOK D3 , , A , F , D4 , D5 , D6 , A , Ln D1, D2, D3, D4, D5, D6 will be dialed out. 4. The flash does not have first priority among the keyboard functions. 5. The flash pause time is 800 mS, so there is a pause of 800 mS between the flash and the next digit dialed (see Figure 5). 6. The dialer will not return to the initial state after the flash break time has elapsed. -7- Publication Release Date: June 1996 Revision A3 W91630 SERIES 7. The flash function timing diagram is shown in Figure 5. Cascaded & Mixed Dialing Cascaded Dialing 1. Definition of cascaded dialing: The next sequence may be pressed before the previous sequence is sent out completely. Examples of cascaded dialing. ¡Ï Example 1: Normal dialing Example 2: Repertory dialing 1 Example 3: Redialing ¡Ï Repertory dialing 1 ¡Ï Normal dialing Normal dialing ¡Ï ¡Ï Repertory dialing 2 ¡Ï... ¡Ï Repertory dialing 2 ¡Ï... Repertory dialing ¡Ï... 2. The rectangles above represent one sequence of normal dialing, redialing, or repertory dialing. 3. At most 64 digits are allowed in cascaded dialing. There is no limitation on the number of sequences. 4. The content of cascaded dialing may include a combination of normal dialing, redialing, and repertory dialing. Redialing is valid only as the first key-in, however. 5. ON HOOK , OFF HOOK , R : The cascaded dialing sequences described in the above examples will be dialed out only if they do not exceed a total of 32 digits. If the length of the combined sequences oversteps 32 digits then redialing is inhibited. Mixed Dialing 1. Definition of mixed dialing: Mixed dialing is a combination of sequences of normal dialing, repertory dialing, and redialing. The three examples given for cascaded dialing are also examples of mixed dialing, provided each sequence is dialed out completely before the next sequence is entered. 2. There is no limitation on the number of digits and sequences in mixed dialing. 3. If a mixed dialing sequence includes redialing, the redialing is valid only as the first key-in. 4. ON HOOK , OFF HOOK , R : The mixed dialing sequences described in the above examples will be dialed out only if the total number of digits does not exceed 32. If the total oversteps 32 digits, then redialing is inhibited. Combination of Cascaded and Mixed Dialing 1. Cascaded dialing and mixed dialing can be combined; each follows the rules described above. 2. To apply redialing to combinations of cascaded and mixed dialing: ON HOOK , OFF HOOK , R : Redialing will be executed only if the total number of digits does not exceed 32. If the total oversteps 32 digits, then redialing is inhibited. 3. If n cascaded sequences with a total of 60 digits have been dialed, then for the (n+1)th cascaded sequence, either one 4-digit normal dialing sequence or one complete repertory dialing sequence (length up to 32 digits) may be dialed. The (n+2)th sequence is not accepted for cascaded dialing. -8- W91630 SERIES 4. After a total of 64 digits of cascaded dialing, mixed dialing can be added. ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATING UNIT VDD−VSS -0.3 to +7.0 V VIL VSS -0.3 V VIH VDD +0.3 V VOL VSS -0.3 V VOH VDD +0.3 V PD 120 mW Operating Temperature TOPR -20 to +70 °C Storage Temperature TSTG -55 to +150 °C DC Supply Voltage Input/Output Voltage Power Dissipation Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device. DC CHARACTERISTICS (FOSC. = 3.58 MHz, Ta = 25° C, all outputs unloaded) PARAMETER SYM. CONDITIONS MIN. TYP. MAX. UNIT Operating Voltage VDD - 2.0 - 5.5 V Operating Current IOP Tone, VDD = 2.5V - 0.30 0.50 mA Pulse, VDD =2.5V - 0.15 0.30 Standby Current ISB HKS = 0, No load & No key entry - - 15 µA Memory Retention Current IMR HKS = 1, VDD = 1.0V - - 0.2 µA DTMF Output Voltage VTO Row group, RL = 5 KΩ 130 150 170 mVrms Col/Row, VDD = 2.0 to 5.5V 1 2 3 dB Pre-emphasis DTMF Distortion THD RL = 5 KΩ VDD = 2.0 to 5.5V - -30 -23 dB DTMF Output DC Level VTDC RL = 5 KΩ VDD = 2.0 to 5.5V 1.0 - 3.0 V -9- Publication Release Date: June 1996 Revision A3 W91630 SERIES DC Characteristics, continued PARAMETER SYM. DTMF Output Sink Current ITL DP /C5 Output Sink Current CONDITIONS MIN. TYP. MAX. UNIT VTO = 0.5V VDD = 2.5V 0.2 - - mA IPL VPO = 0.5V VDD = 2.5V 0.5 - - mA P MUTE & T/P MUTE Output Drive Current IMH VMO = 2.0V VDD = 2.5V 0.2 - - mA P MUTE & T/P MUTE Output Sink Current Keypad Input Drive Current IML VMO = 0.5V VDD = 2.5V 0.5 - - mA IKD VI = 0V, VDD = 2.5V 4 - - µA Keypad Input Sink Current IKS VI = 2.5V, VDD = 2.5V 200 400 - µA Keypad Resistance RK - - - 5.0 KΩ HKS Input Pull High Resistance Input Voltage Low Level RHK - - 300 - KΩ VIL Pins 1, 2, 3, 4, 10, 13, 0 - V Input Voltage High Level VIH 15, 16, 17, 18 0.8 VDD - 0.2 VDD VDD V AC CHARACTERISTICS PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT Keypad Active in Debounce TKID - - 20 - mS Key Release Debounce TKRD - - 20 - mS Pre-digit Pause TPDP1 Mode Pin = Floating - 33.3 - mS 10 ppS Mode Pin = VDD - 40 - Interdigit Pause (Auto Dialing) TIDP 10 ppS - 800 - mS Make/Break Ratio M/B M/B = 1:2 - 33:67 - % M/B = 2:3 - 40:60 - Auto Dialing - 90 - mS - 90 - mS W91630/1 - 300 - mS W91632/3 - 100 - DTMF Output Duration TTD Intertone Pause TITP Flash Break Time TFB Flash Pause TFP - - 800 - mS Pause Time TP - - 4.0 - S TPTM - - 70 - mS Pre-tone Mute Notes: 1. Crystal parameters suggested for proper operation are RS < 100 Ω, Lm = 96 mH, Cm = 0.02 pF, Cn = 5 pF, Cl = 18 pF, FOSC. = 3.579545 MHz ±0.02%. - 10 - W91630 SERIES 2. Crystal oscillator accuracy directly affects these times. TIMING WAVEFORMS HKS KEY IN 3 2 R TKID TPDP TIDP DP/C5 TKID TIDP TIDP TB TPDP TPDP TIDP TPDP TM T/P MUTE P MUTE LOW DTMF OSCILLATION OSCILLATION NORMAL DIALING AUTO DIALING OSC. Figure 1. Pulse Mode Timing Diagram HKS KEY IN TKRD TKRD TKID TPTM TKID TKRD TPTM TITP DTMF TTD TITP TITP T/P MUTE DP/C5 HIGH LOW P MUTE OSC. OSCILLATION OSCILLATION Figure 2(a). Tone Mode Normal Dialing Timing Diagram - 11 - Publication Release Date: June 1996 Revision A3 W91630 SERIES Timing Waveforms, continued HKS R KEY IN TKID TPTM DTMF TTD TITP TITP T/P MUTE HIGH DP/C5 LOW P MUTE OSCILLATION OSC. Figure 2(b). Tone Mode Auto Dialing Timing Diagram HKS KEY IN 4 2 P 2 TKID M B B M DP/C5 TPDP TIDP TIDP TPDP TP T/P MUTE DTMF LOW P MUTE OSC. OSCILLATION Figure 3. Pause Function Timing Diagram - 12 - TIDP W91630 SERIES Timing Waveforms, continued HKS P KEY IN T 2 4 8 TKID B M DP/C5 TPDP M B TIDP TIDP T/P MUTE TITP DTMF P MUTE OSCILLATION OSC. Figure 4. P→T Operation Timing Diagram in Normal Dialing LOW HKS KEY IN F F 3 TKID DP/C5 TFB TFP TFP TIDP T/P MUTE P MUTE DTMF OSC. LOW OSCILLATION Figure 5. Flash Operation Timing Diagram - 13 - Publication Release Date: June 1996 Revision A3 W91630 SERIES Headquarters Winbond Electronics (H.K.) Ltd. No. 4, Creation Rd. III, Science-Based Industrial Park, Hsinchu, Taiwan TEL: 886-3-5770066 FAX: 886-3-5792697 http://www.winbond.com.tw/ Voice & Fax-on-demand: 886-2-7197006 Rm. 803, World Trade Square, Tower II, 123 Hoi Bun Rd., Kwun Tong, Kowloon, Hong Kong TEL: 852-27516023 FAX: 852-27552064 Taipei Office 11F, No. 115, Sec. 3, Min-Sheng East Rd., Taipei, Taiwan TEL: 886-2-7190505 FAX: 886-2-7197502 Note: All data and specifications are subject to change without notice. - 14 - Winbond Electronics North America Corp. Winbond Memory Lab. Winbond Microelectronics Corp. Winbond Systems Lab. 2730 Orchard Parkway, San Jose, CA 95134, U.S.A. TEL: 1-408-9436666 FAX: 1-408-9436668