W91210

W91210 SERIES TONE/PULSE DIALER WITH REDIAL FUNCTION GENERAL DESCRIPTION The W91210 series are Si-gate CMOS ICs that provide the necessary signals for either pulse or tone dialing. The W91210 series features a redial function. FEATURES • • • • • • • • • • • • • • DTMF/Pulse switchable dialer One by 32 digits for redial memory Pulse-to-tone (*/T) keypad for long distance call operation Uses 4 × 4 keyboard Easy operation with redial, flash, pause, and */T keypads Pause, P→T (pulse-to-tone) can be stored as a digit in memory Minimum tone output duration: 87 mS Minimum intertone pause: 87 mS Flash time (100 mS, 300 mS or 600 mS) selectable by keypad Pause time 3.6 sec or 2.0 sec On-chip power-on reset Uses 3.579545 MHz crystal or ceramic resonator Packaged in 16-pin plastic DIP The different dialers in the W91210 series are described in the following table: TYPE NO. W91212 W91214/A W91216 PULSE (ppS) 10 10 10 FLASH (mS) 100/300/600 100/300/600 100/300/600 PAUSE TIME (S) 3.6 3.6/2.0 3.6 M/B Pin Pin Pin PULSE-TO-TONE PAUSE TIME Yes No Yes Note: W91214 designed for use in France, W91216 for Germany. -1- Publication Release Date: May 1995 Revision A3 W91210 SERIES PIN CONFIGURATION C1 C2 C3 MODE VSS XT XT T/P MUTE 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 R4 R3 R2 R1 VDD DTMF DP/C4 HKS W91212/W91214/W91214A/W91216 PIN DESCRIPTION SYMBOL ColumnRow Inputs 16-PIN 1−3 & 13−16 6, 7 8 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 by 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 sequences 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, M/B = 2:3). If the mode pin is left floating, the dialer is in pulse mode (10 ppS, M/B = 1:2). XT, XT T/P MUTE I, O O MODE 4 I -2- W91210 SERIES Pin Description, continued SYMBOL HKS 16-PIN 9 I/O I FUNCTION Hook switch input. HKS = 1: On-hook state. Chip in sleep mode, no operation. HKS = 0: Off-hook state. Chip enabled for normal operation. HKS pin is pulled to VDD by internal resistor. N-channel open drain dialing pulse output (Figure 1). Flash key will cause DP to be active in either tone mode or pulse mode. In pulse mode, remains in low state. 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 DP / C4 DTMF 10 11 O O VDD, VSS 12, 5 I Power input pins. -3- Publication Release Date: May 1995 Revision A3 W91210 SERIES BLOCK DIAGRAM XT XT HKS MODE SYSTEM CLOCK GENERATION READ/WRITE COUNTER ROW (R1 to R4) KEYBOARD INTERFACE RAM CONTROL LOGIC PULSE CONTROL LOGIC T/P MUTE DP/C4 COLUMN (C1 to C3) LOCATION LATCH DTMF D/A CONVERTER ROW & COLUMN PROGRAMMABLE COUNTER DATA LATCH & DECODER FUNCTIONAL DESCRIPTION Keyboard Operation C1 1 4 7 */T • • • C2 2 5 8 0 C3 3 6 9 # DP / C4 F1 F2 F3 R/P R1 R2 R3 R4 */T: * and P→T key R/P: Redial and pause function key F1, F2, F3: Flash keys 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- W91210 SERIES Redialing OFF HOOK The R/P , D1 , D2 , ..., Dn BUSY, Come ON HOOK , OFF HOOK , R/P key can execute the redial function only as the first key-in after off-hook; otherwise, it ex- ecutes the 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, redialing, or memory dialing. 3. The pause function timing diagram is shown in Figure 3. Pulse-to-tone (*/ T) OFF HOOK , D1 , D2 , ..., Dn , */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, * , D1', D2', ..., Dn' (Tone) (Tone) (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(a, b). Flash OFF HOOK , F 1. The flash key cannot be stored as a digit in memory. The flash key has first priority among the keyboard functions. 2. The system will return to the initial state after the flash pause time is finished. 3. The flash function timing diagram is shown in Figure 5. OFF HOOK , F , D1 , D2 , D3 , ..., Dn LNB = D1, D2, D3, ..., Dn OFF HOOK , D1 , D2 , F , D3 , ..., Dn LNB = D3, ..., Dn -5- Publication Release Date: May 1995 Revision A3 W91210 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 Keypad Input Drive Current Keypad Input Sink Current Keypad Resistance SYM. VDD IOP ISB IMR VTO CONDITIONS Tone Pulse HKS = 0, No load & No key enry HKS = 1, VDD = 1.0V Row group, RL = 5 KΩ Col/Row, VDD = 2.0 to 5.5V MIN. 2.0 130 1 1.0 0.2 0.5 0.5 - TYP. 0.30 0.15 150 2 -30 300 400 - MAX. 5.5 1.0 0.5 15 0.2 170 3 -23 3.0 500 5.0 UNIT V mA mA µA µA mVrm s dB dB V mA mA mA KΩ µA µA KΩ THD VTDC ITL IPL IML RKH IKD IKS 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 VI = 0V VI = 2.5V 30 200 - -6- W91210 SERIES AC CHARACTERISTICS PARAMETER Keypad Active in Debounce Key Release Debounce Pre-digit Pause Interdigit Pause (Auto dialing) Make/Break Ratio DTMF Output Duration Intertone Pause Flash Break Time SYM. TKID TKRD TPDP 10 ppS TIDP M/B TTD TITP TFB Mode Pin = VDD Mode Pin = Floating 10 ppS Mode Pin = VDD Mode Pin = Floating Auto Dialing Auto Dialing F1 F2 F3 Flash Pause Time TFP F1 F2 F3 Pause Time 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. 85 85 - TYP. 20 20 40 33.3 800 40:60 33:67 87 87 100 300 600 1.0 1.0 1.0 3.6 2.0 MAX . - UNIT mS mS mS mS mS % % mS mS mS S TP W91212/214/216 W91214A S -7- Publication Release Date: May 1995 Revision A3 W91210 SERIES TIMING WAVEFORMS HKS KEY IN 3 TKID 2 TPDP TIDP TPDP TB TM TIDP R/P TKID TPDP TPDP DP T/P MUTE T/P MUTE DTMF LOW OSC. OSCILLATION NORMAL DIALING OSCILLATION AUTO DIALING Figure 1. Pulse Mode Timing Diagram Note: The dashed line is for W91216 only in pulse mode. HKS KEY IN TKID TKRD TKRD TKID TKRD TITP DTMF TTD TITP TITP T/P MUTE DP HIGH OSCILLATION OSC. OSCILLATION Figure 2(a). Tone Mode Normal Dialing Timing Diagram -8- W91210 SERIES Timing Waveforms, continued HKS KEY IN 4 TKID 2 */T 8 DP TPDP T/P MUTE T/P MUTE TIDP TB TM TIDP TP DTMF OSC. OSCILLATION Figure 4(a). P→T Operation Timing Diagram in Normal Dialing (W91212, W91216) Note: The dashed line is for W91216 only. HKS KEY IN 4 TKID 2 TKID */T DP TPDP T/P MUTE TIDP TIDP DTMF * Tone OSC. OSCILLATION Figure 4(b). P→T Operation Timing Diagram in Normal Dialing (for W91214/W91214A) - 10 - W91210 SERIES Timing Waveforms, continued HKS LO W KEY IN F TKID 4 DP TFB TFP T/P MUTE T/P MUTE DTMF TTD TITP OSC. OSCILLATION Figure 5. Flash Operation Timing Diagram Note: The dashed line is for W91216 only. - 11 - Publication Release Date: May 1995 Revision A3 W91210 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. - 12 -