W91312A

W91310 SERIES TONE/PULSE DIALER WITH REDIAL FUNCTION GENERAL DESCRIPTION The W91310 series are monolithic ICs that provide the necessary signals for either pulse or tone dialing. The W91310 series feature a redial memory. FEATURES • • • • • • • • • • • • • DTMF/Pulse switchable dialer 32 digits for redial memory Pulse-to-tone (P→T) keypad for long distance call operation Break/Make ratio is selectable by pin option Uses 4 × 4 keyboard Easy operation with redial, flash, pause, and P→T keypads Flash, pause, P→T (pulse-to-tone) can be stored as a digit in memory Minimum tone output duration: 100 mS Minimum intertone pause: 100 mS On-chip power-on reset Uses 3.579545 MHz crystal or ceramic resonator Packaged in 18-pin plastic DIP The different dialers in the W91310 series are shown in the following table: TYPE NO. W91312/A W91314/A W91316 PULSE (ppS) 10/20 10/20 10/20 FLASH (mS) 600/300 73/100 600 FLASH PAUSE (mS) 600/300 140/100 600 PAUSE (S) 2.0 3.6 3.6 -1- Publication Release Date: January 1995 Revision A3 W91310 SERIES PIN CONFIGURATION C1 C2 C3 C4 B/M VSS XT XT T/P MUTE 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 R4 R3 R2 R1 VDD MODE DTMF DP HKS PIN DESCRIPTION SYMBOL ColumnRow Inputs PIN 1−4 & 15−18 7, 8 9 I/O I FUNCTION The keyboard input may be from either the standard 4 × 4 keyboard or an inexpensive single contact (form A) keyboard. Electronic input from a µC can also be used. A valid key entry is defined as a single row being connected to a single column. A built-in inverter provides oscillation with an inexpensive 3.579545 MHz crystal or ceramic resonator. The T/P MUTE is a conventional CMOS N-channel open drain output. The output transistor is switched on during pulse and tone mode dialing sequence and flash break. Otherwise, it is switched off. Pulling mode pin to VSS places the dialer in tone mode. Pulling mode pin to VDD places the dialer in pulse mode (10 ppS). Leaving mode pin floating places the dialer in pulse mode (20 ppS). Hook switch input. HKS = 1: On-hook state. Chip in sleeping mode, no operation. HKS = 0: Off-hook state. Chip enabled for normal operation. The HKS pin is pulled to VDD by an internal resistor. XT, XT T/P MUTE I, O O MODE 13 I HKS 10 I -2- W91310 SERIES Pin Description, continued SYMBOL DP DTMF PIN 11 12 I/O O O FUNCTION N-channel open drain dialing pulse output (Figure 1). Flash key will cause DP to go active in both pulse mode and tone mode. In pulse mode, remains in 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 R1 R2 R3 R4 C1 C2 C3 697 770 852 941 1209 1336 1477 Actual 699 766 848 948 1216 1332 1472 Error % +0.28 -0.52 -0.47 +0.74 +0.57 -0.30 -0.34 VDD, VSS B/M 14, 6 5 I I Power input pins. The break make ratio is 60:40 if B/M = 1 and is 66.6:33.3 if B/M = 0. This pin has no function in DTMF mode. -3- Publication Release Date: January 1995 Revision A3 W91310 SERIES BLOCK DIAGRAM XT XT HKS B/M MODE SYSTEM CLOCK GENERATION READ/WRITE COUNTER ROW (R1 to R4) KEYBOARD INTERFACE RAM CONTROL LOGIC PULSE CONTROL LOGIC T/P MUTE DP COLUMN (C1 to C4) LOCATION LATCH DTMF D/A CONVERTER ROW & COLUMN PROGRAMMABLE COUNTER DATA LATCH & DECODER FUNCTIONAL DESCRIPTION Keyboard Operation C1 1 4 7 * • • • C2 2 5 8 0 C3 3 6 9 # C4 R1 F P→T R/P R2 R3 R4 F: Flash key R/P: Redial and pause function key P→T: Pulse mode to tone mode 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. -4- W91310 SERIES Redialing OFF HOOK The R/P , D1 , D2 , ..., Dn BUSY, COME ON HOOK , OFF HOOK , R/P key can execute redial function only as the first key-in after off-hook; otherwise, it will execute pause function. Access Pause OFF HOOK , D1 , D2 , R/P , D3 , ..., Dn 1. The pause function can be stored in memory. 2. The pause function is executed in normal dialing or memory dialing. 3. The pause function timing diagram is shown in Figure 3. Pulse-to-tone (P→T) OFF HOOK , D1 , D2 , ..., Dn , P→T , D1' , D2' , ..., Dn' 1. If the mode switch is set to pulse mode, then the output signal will be: D1, D2, ..., Dn, Pause, D1', D2', ..., Dn' (Pulse) (Tone) 2. If the mode switch is set to tone mode, then the output signal will be: D1, D2, ..., Dn, (Tone) P→T (Pause) D1, D2, ..., Dn, (Tone) 3. The dialer remains in tone mode when the digits have been dialed out and can be reset to pulse mode only by going on-hook. 4. The P→T function timing diagram is shown in Figure 4. Flash OFF HOOK , F 1. Flash key can be stored as a digit in memory. 2. The system will return to the initial state after the break time is finished. 3. The flash function timing diagram is shown in Figure 5. -5- Publication Release Date: January 1995 Revision A3 W91310 SERIES ABSOLUTE MAXIMUM RATINGS PARAMETER DC Supply Voltage Input/Output Voltage SYMBOL VDD−VSS VIL VIH VOL VOH Power Dissipation Operating Temperature Storage Temperature PD TOPR TSTG RATING -0.3 to +7.0 VSS -0.3 VDD +0.3 VSS -0.3 VDD +0.3 120 -20 to +70 -55 to +125 UNIT V V V V V mW °C °C Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device. DC CHARACTERISTICS (VDD-VSS = 2.5V, Fosc. = 3.58 MHz, TA = 25° C, all outputs unloaded) PARAMETER Operating Voltage Operating Current Standby Current Memory Retention Current DTMF Output Voltage Pre-emphasis DTMF Distortion DTMF Output DC Level DTMF Output Sink Current DP Output Sink Current T/P MUTE Output Sink Current HKS I/P Pull-high Resistor SYM. VDD IOP ISB IMR VTO Tone Pulse CONDITIONS MIN. 2.0 130 1 1.0 0.2 0.5 0.5 - TYP. 0.3 0.15 150 2 -30 300 MAX. 5.5 0.5 0.3 15 0.2 170 3 -23 3.0 - UNIT V mA mA µA µA mVrm s dB dB V mA mA mA KΩ HKS = 0, No load, & No key entry HKS = 1, VDD = 1.0V Row group, RL = 5 KΩ Col/Row, VDD = 2.0 to 5.5V THD VTDC ITL IPL IML RKH RL = 5 KΩ, VDD = 2.0 to 5.5V RL = 5 KΩ, VDD = 2.0 to 5.5V VTO = 0.5V VPO = 0.5V VMO = 0.5V -6- W91310 SERIES DC Characteristics, continued PARAMETER Keypad Input Drive Current Keypad Input Sink Current Keypad Resistance SYM. IKD IKS CONDITIONS VI = 0V VI = 2.5V MIN. 30 200 - TYP. 400 - MAX. 5.0 UNIT µA µA KΩ AC CHARACTERISTICS PARAMETER Keypad Active in Debounce Key Release Debounce Pre-digit Pre-digit Pause1 Pause2 SYMBOL TKID TKRD TPDP1 10 ppS TPDP2 20 ppS Interdigit Pause (Auto dialing) Make/Break Ratio DTMF Output Duration Intertone Pause Flash Break Time TIDP B/M = 1 B/M = 0 B/M = 1 B/M = 0 10 ppS 20 ppS M/B TTD TITP TFB B/M = 1 B/M = 0 Auto Dialing Auto Dialing W91314 W91314A W91312A W91312/W91316 Flash Pause Time TFP W91314A W91314 W91312A W91312/W91316 Pause Time TP W91312 W91314/A/W9131 6 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%. 2. Crystal oscillator accuracy directly affects these times. CONDITIONS MIN. - TYP. 20 20 40 33.3 20 16.7 800 500 40:60 33:67 100 100 73 100 300 600 100 140 300 600 2.0 3.6 MAX. - UNIT mS mS mS mS mS % mS mS mS mS S -7- Publication Release Date: January 1995 Revision A3 W91310 SERIES TIMING WAVEFORMS HKS KEY IN 4 T KID 2 2 B DP TPDP M TIDP TIDP T IDP T/P MUTE DTMF LOW OSC. OSCILLATION NORMAL DIALING OSCILLATION Figure 1(a). Pulse Mode Timing Diagram HKS KEY IN R/P DP B M TPDP TIDP TIDP TIDP T/P MUTE LOW DTMF OSC. ON HOOK OSCILLATION AUTO DIALING Figure 1(b). Pulse Mode Timing Diagram -8- W91310 SERIES TIming Waveforms, continued HKS KEY IN TKID T ITP TKRD TKRD TITP TKID T ITP DTMF TTD T/P MUTE DP HIGH OSC. OSCILLATION NORMAL DIALING OSCILLATION Figure 2(a). Tone Mode Timing Diagram HKS KEY IN R/P TKID DTMF T TD T ITP T/P MUTE T ITP DP HIGH OSC. OSCILLATION Figure 2(b). Tone Mode Auto Dialing Timing Diagram -9- Publication Release Date: January 1995 Revision A3 W91310 SERIES TIming Waveforms, continued HKS KEY IN 4 TKID 2 R/P 2 DP B T PDP M T IDP B M T IDP B M TIDP T/P MUTE DTMF LOW TP OSC. OSCILLATION Figure 3. Pause Function Timing Dragram HKS KEY IN 4 TKID 2 P T 8 DP B TPDP M TIDP B M TIDP T/P MUTE TP DTMF OSC. OSCILLATION Figure 4. Pulse-to-tone Function Timing Dragram - 10 - W91310 SERIES TIming Waveforms, continued HKS KEY IN F TKID 4 DP TFB TFP DTMF T TD TITP T/P MUTE OSC. OSCILLATION Figure 5. Flash Function Timing Diagram - 11 - Publication Release Date: January 1995 Revision A3 W91310 SERIES Headquarters 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 Winbond Electronics (H.K.) Ltd. Rm. 803, World Trade Square, Tower II, 123 Hoi Bun Rd., Kwun Tong, Kowloon, Hong Kong TEL: 852-27516023 FAX: 852-27552064 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 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. - 13 - Publication Release Date: January 1995 Revision A3