W91570DN

W91570DN SERIES 23-MEMORY TONE/PULSE DIALER WITH AUTOREDIAL RTC AND LCD DISPLAY FUNCTIONS GENERAL DESCRIPTION The W91570DN series ICs are Si-gate CMOS ICs that provide the signals needed for either pulse or tone dialing. They feature 23 number memories and a 16-digit LCD driver for displaying telephone numbers and calling time. A real time clock is included to display the time of day. The W91570DN series is fabricated using CMOS technology providing good performance in low voltage, low power applications. FEATURES • • • • • • • • • • • • • • • • • • • • • • • • • Three by 32 digits for redial, save and mercury memory Twenty by 16 digits for one-touch direct or two-touch indirect repertory memory Uses 6 × 10 keyboard Pause, Pulse-to-tone (*/T) and flash can be stored as a digit in memory Minimum tone output duration: 87 mS Minimum intertone pause: 87 mS Tone/Pulse mode pin selectable Make/Break ratio pin selectable Dialing rate (10 or 20 ppS) pin selectable Pause time (2.0 or 3.6 Sec) selectable by keypad Flash break time (100, 300, or 600 mS) selectable by keypad Built-in 12 or 16-digit LCD driver (1/4 duty, 1/3 bias) selectable by mask option Built-in calling timer from [00:00] to [59:59] Uses 3.579545 MHz TV quartz crystal or ceramic resonator Uses 32768 Hz crystal as RTC frequency base Packaged in 80-pin plastic QFP with RTC Provides one-key-redial and auto-redial functions Switchable 24-hour clock or 12-hour clock with p.m. mode 0 or 9 dialing inhibition pin for PABX systems or long distance dialing lock out On-hook debounce: 150 msec in normal mode and 20 msec in lock mode Off-hook delay 300 mS in lock mode (i.e. DP will keep low for 300 mS while off hook) First key-in delay: 300 msec in lock mode MUTE key for speech mute Cascade and mixed dialing allowed The functions of the different dialers in the W91570DN series are shown in the following table: PRODUCT NO. W91572DNF W91574DNF W91576DNF W91578DNF LCD DIGITS 16 16 12 12 LOCK √ √ √ √ RTC BATTERY 1.5V 3V 1.5V 3V -1- Publication Release Date: May 1997 Revision A2 W91570DN SERIES PIN CONFIGURATION 41 65 80 25 1 PIN NAME SEG29 SEG30 SEG31 SEG32 TEST KMUTE KT TEST1 VDD QFP-80 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 PIN NAME COL2 COL3 COL4 COL5 COL6 COL7 COL8 COL9 ROW1 ROW2 ROW3 ROW4 ROW5 XT1 XT1 HKS HFI VRTC1 TEST 2 ARD QFP-80 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 PIN NAME TESTL APSET XT2 XT2 VLCD VRTC2 QFP-80 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 PIN NAME SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 QFP-80 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 CN CP COM1 COM2 COM3 COM4 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 NC/ LOCK B/M DTMF SET RTC VSS H/P MUTE T/P MUTE HFO DP / C10 MODE COL1 -2- W91570DN SERIES PIN DESCRIPTION SYMBOL Row, Column Inputs PIN NO. 29−33 and 20−28 I/O I FUNCTION The keyboard inputs may be used with either the standard 6×10 keyboard, an inexpensive single contact (form A) keyboard or electronic input. A valid key entry is defined by a single row being connected to a single column. XT1, XT 34, 35 I, O A built-in inverter provides oscillation with an inexpensive 3.579545 MHz crystal or ceramic resonater. The oscillator ceases when a keypad input is not sensed after chip enable and dialing is finished. The crystal frequency deviation is ±0.02%. T/P MUTE 16 O The T/P MUTE is a conventional CMOS N-channel open drain output. The output transistor is switched on low level during the dialing sequence (both pulse and tone mode), one-key redial break, auto redial break and flash break. Otherwise, it is switched off. The H/P MUTE is a conventional CMOS inverter output. During pulse dialing, one-key redial break, auto redial break, flash break, hold, and mercury functions, this pin will output an active high. It remains in a low state at all other times. The KMUTE is a CMOS N-channel open drain output. The output transistor is switched on only during mute function. Otherwise, it is switched off. Hook switch input. HKS = VDD or floating: On-hook state. Chip in sleeping mode, no operation. HKS = VSS: Off-hook state. Chip enable for normal operation. HKS pin is pulled to VDD by internal resistor. H/P MUTE 15 O KMUTE 6 O HKS 36 I -3- Publication Release Date: May 1997 Revision A2 W91570DN SERIES Pin Description, continued SYMBOL HFI , HFO PIN NO. 37, 17 I/O I, O FUNCTION Handfree control pins. A low pulse on the HFI input pin toggles the handfree control state. Status of the handfree control is listed in the following table: CURRENT STATE Hook SW. HFO Low On Hook Off Hook On Hook Off Hook Off Hook Low High High High Input HFI HFI HFI Off Hook On Hook On Hook NEXT STATE HFO High Low Low Low Low High Dialing Yes No Yes Yes No Yes The HFI pin is pulled to VDD by internal resistor. Detailed timing diagrams are shown in Figure 4(a), 4(b). DP / C10 18 O This pin is a CMOS N-channel open drain output. The flash key will cause DP / C10 to go active in either pulse mode or tone mode. In lock mode, the DP / C10 keeps low for 300 mS during off-hook delay time (If first off-hook occured after power-on reset, the DP / C10 will keep high for 100ms then go low 200 mS. It will be recovered when first key-in was accepted). The timing diagram is shown as Figure 1(a), 1(b), 1(c), 1(d). In pulse mode, this pin remains in low state at all times. In tone mode, it will output a dual or single tone. Detailed timing diagram for tone mode is shown in Figure 2(a), 2(b), 2(c), 2(d). 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 DTMF 12 O MODE 19 I Pulling the mode pin to VSS places the dialer in tone mode. Pulling the mode pin to VDD places the dialer in pulse mode and the dialing rate is 10 ppS. Floating the mode pin places the dialer in pulse mode and the dialing rate is 20 ppS. -4- W91570DN SERIES Pin Description, continued SYMBOL B/M PIN NO. 11 I/O I FUNCTION Make:Break ratio select pin. If B/M = VDD, the M/B ratio is 40:60. If B/M = VSS, the M/B ratio is 33.3:66.7. The B/M pin is pulled to VDD by internal resistor. LOCK 10 (for all lock version) I The LOCK pin is used to prevent "0" or "9" dialing under PABX system long distance call control. When the first key input after reset is "0" or "9", all the key inputs, including "0" or "9" key, become invalid, and the chip generates no output. The telephone is reinitialized by a reset. The following table describes the functions of the LOCK pin: LOCK PIN Floating VDD V SS FUNCTION Normal dialing "0", "9" dialing inhibited "0" dialing inhibited COM1 to COM4 SEG1 to SEG32 VLCD CP, CN 49 to 52 53 to 80, 1 to 4 45 48, 47 O O O COM1 to COM4 are the common signal output terminal for the 1/4 duty LCD. SEG1 to SEG32 are the 16-digit segment signal outputs. Power supply pin for LCD driver. A 0.1 µF capacitor is connected between VLCD and VSS. CP is the voltage control capacitor positive pin. I VDD, VSS XT2, XT2 VRTC1, VRTC2 9, 14 43, 44 38, 46 I I, O I CN is the voltage control capacitor negative pin. A 0.1µF capacitor is connected between these two pins. Power input pins. A quartz crystal oscillator provides an RTC frequency time base of 32.768 KHz. Either VRTC1 should be connected to a 1.5V battery (W91572DN/576DN) or VRTC2 should be connected to a 3.0V battery(W91574DN/578DN), which supplies the power source for the RTC. In the chip enable state, pulling SET RTC to VSS toggles the RTC set function on/off, when the set function is toggled on, the RTC can be set using the "HOUR" and "MIN" keypads. SET RTC 13 I -5- Publication Release Date: May 1997 Revision A2 W91570DN SERIES Pin Description, continued SYMBOL APSET ARD PIN NO. 42 40 I/O I I FUNCTION If APSET = VDD or floating, 24-hour clock mode. If APSET = VSS, 12-hour clock with p.m. mode. Auto redial function selection. ARD BREAK PAUSE WAIT INTERVAL REPEAT TIMES VDD VSS Floating 4 secs 1 sec 25 secs 30 secs - 10 10 1 30 secs 1 sec 4 secs 1 sec When ARD is left floating, the one-key redial function is enabled. KT 7 O The key tone output is a conventional CMOS inverter. The key tone is generated as any valid key pressed, as the KT pin generates a 1.2 KHz square wave which keeps on 35 mS; otherwise, it remain in low state. TEST, TEST1, TEST 2 , TESTL NC 5, 8, 39, 41 I For testing only. 10 (for W91572/574/ W91576/578) - No connection. -6- W91570DN SERIES BLOCK DIAGRAM V DD V SS XT2 XT2 XT1 XT1 REAL TIME CLOCK GENERATOR SYSTEM CLOCK GENERATOR SET RTC AP SET HKS CONTROL LOGIC ROW (R1 to R5) KEYBOARD INTERFACE COLUMN (C1 to C9) LOCATION LATCH RAM H/P MUTE PULSE/ TONE CONTROL LOGIC T/P MUTE DP/C10 HFO KT KMUTE D/A CONVERTER ROW & COLUMN PROGRAMMABLE COUNTER READ/WRITE COUNTER HFI LOCK B/M MODE ARD DTMF DATA LATCH & DECODER V LCD V RTC1 V RTC2 BACKPLANE SIGNAL GENERATOR SEGMENT OUTPUT DECODER CP CN COM1 COM2 COM3 COM4 L.C.D. FUNCTIONAL DESCRIPTION Keyboard Operation C1 1 4 7 */T F1 R/P2 C2 2 5 8 0 F2 C3 3 6 9 # F3 ICON12 C4 E MUTE A2 R/P1 CHK ICON13 C5 HOUR MIN SAVE OKR TIM ICON14 C6 M0 M1 M2 M3 M4 ICON15 C7 M5 M6 M7 M8 M9 ICON16 C8 M10 M11 M12 M13 M14 C9 M15 M16 M17 M18 M19 DP / C10 HOLD1 HOLD2 MER A1 RTC R1 R2 R3 R4 R5 VDD/VX/R6 -7- Publication Release Date: May 1997 Revision A2 W91570DN SERIES • • • • • • • • • • E: Store digit MUTE: Mute key F1, F2, F3: Flash keys SAVE: Save memory key MER: Mercury memory key OKR: One-key redial function RTC: Real time clock toggle key HOLD1, HOLD2: Hold function keys R/P1, R/P2: Redial and pause function keys, P1 is 3.6 sec. and P2 is 2.0 sec. TIM: a. Display last calling time b. Start and/or stop counting up calling time HOUR and MIN: Active when setting mode is operated after off-hook A1, A2: Indirect repertory memory dialing function keys, A1 for page 1 and A2 for page 2 If Lp = 0 to 9, Mp = M0 to M9, and Mq = M10 to M19, then a. A1 + Lp (or Mp) the memory location M0 to M9 will be selected b. A2 + Lp (or Mp) the memory location M10 to M19 will be selected c. A1 (or A2) + Mq the memory location M10 to M19 will be selected • • • • */T: * in tone mode and P→T in pulse mode CHK: a. Check dialing number b. Check last dialing time c. Memory check (except mercury) ICON12, ..., ICON16: Keys reserved for user, can be toggled on any time when the chip is enabled R/P: R/P1 or R/P2 An: A1, A2 Ln: 0, ..., 9, map to indirect memory location 0, ..., 9 Mn: Direct memory location M0, ..., M19 • Notes: D1, ..., Dn, D1', ..., Dn': 0, ..., 9, ∗/T, # Normal Dialing OFF HOOK (or ON HOOK & HFI ¡õ ), D1 , D2 , ..., Dn 1. D1, D2, ..., Dn will be dialed out. 2. Dialing length is unlimited, but redial is inhibited if the length oversteps 32 digits in normal dialing. Redialing If ARD pin = floating, the one-key redial function is selected: 1. OFF HOOK Number Store (or ), ON HOOK D3 , ..., & Dn HFI ¡õ ), D1 , D2 , , Check Memory OFF (or (or , Busy, -8- ON HOOK W91570DN SERIES Come ON HOOK a. The R/P & HFI ¡õ ), R/P HOOK key can execute the redial function only as the first dialing after off-hook; otherwise, it the pause will invoke function. b. The redial memory contents will be D3, ..., Dn. c. Redial memory can be checked in memory check mode. d. If redialing length oversteps 32 digits, the redialing function will be inhibited. 2. OFF HOOK (or ON HOOK D1 to Dn & HFI ¡õ ), D1 , D2 , ..., Dn , Busy, OKR a. If the dialing of is finished, pressing the OKR key will cause the pulse output pin DP / C10 to go low for 2.2 seconds break time and 0.6 seconds pause time will be added automatically. b. If the pulses of the dialed digits D1 to Dn have not finished, OKR will be ignored. c. The one-key redialing function timing diagram is shown in Figure 3. Number Entry 1. OFF HOOK (or ON HOOK & HFI ¡õ An , Ln ), ), D1 , D2 , ..., Dn , E (many times same as one time), Mn (or ON HOOK D1, D2, ..., Dn will be stored in memory location Mn (or Ln) and will be dialed out. 2. OFF HOOK (or ON HOOK Mn (or & An & , HFI ¡õ Ln HFI ¡õ ), ), E , D1 , D2 , ..., Dn , E (could be skipped), 3. OFF HOOK (or An , Ln (or ), ON HOOK ), E , D1 , D2 , ..., Dn , Mn ON HOOK ON HOOK a. D1, D2, ..., Dn will be stored in memory location Mn (or Ln) but will not be dialed out. b. R/P and */T keys can be stored as a digit in memory, in store mode, R/P is the pause function key. c. The store mode is released after the store function is executed or when the state of the hook Publication Release Date: May 1997 Revision A2 -9- W91570DN SERIES switch changes is executed. 4. OFF HOOK , E , Mn (or An , Ln ) The redial content excluding memory dialing will be copied to memory location Mn (or Ln). 5. The first 16 digits will be stored into memory, if the key-in number over 16 digits. Save 1. OFF HOOK E , D1' , (or ON HOOK & HFI ¡õ , SAVE ), D1 , D2 , ..., Dn , CONVERSATION, D2' , ..., Dn' D1', D2', ..., Dn' will be stored in save memory but will not be dialed out. 2. OFF HOOK (or ON HOOK & HFI ¡õ ), D1 , D2 , ..., Dn , SAVE a. If the dialing sequence D1, D2, ..., Dn has not finished, SAVE will be ignored. b. If the sequence off hook, D1, D2, ..., Dn (dialing finish), SAVE, SAVE is keyed in, D1, D2, ..., Dn will be copied to save memory and D1, D2, ..., Dn will be dialed out again. c. If the sequence off hook, D1, D2 (dialing finish), SAVE, D3, D4 (dialing finish), SAVE is keyed in, D1, D2 will be copied to save memory and D3, D4 will not be copied to save memory. d. All above sequences will be displayed on LCD. Mercury 1. OFF HOOK E , D1' , (or ON HOOK & HFI ¡õ , MER ), D1 , D2 , ..., Dn , CONVERSATION, D2' , ..., Dn' D1', D2', ..., Dn' will be stored in mercury memory and display on the LCD, but will not be dialed out. 2. MERCURY memory content = D1', D2', ..., Dn' OFF HOOK (or ON HOOK & HFI ¡õ (or ), D1 , D2 , ..., Dn , MER , ON HOOK , Come, OFF HOOK ON HOOK & HFI ¡õ ), MER a. The dialing sequence will be D1, D2, ... Dn, on hook, off hook, D1', D2', ..., Dn'. - 10 - W91570DN SERIES b. The MER key can be used to execute the mercury function only when it is the first key-in in dialing mode after off-hook or first priority flash operation. c. The contents of mercury memory will not be displayed on the LCD except for mercury mark. d. If the sequence D1, D2, ..., Dn, MER, on-hook, off-hook, MER is keyed in, D1, D2, ..., Dn will not be copied to mercury memory, D1', D2', ..., Dn' will be dialed out, and the mercury mark (icon 10) will be blinking after off-hook. Detailed timing diagram is shown in Figure 5. e. Mercury memory cannot be checked in memory check mode. - 11 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES Repertory Dialing 1. One-touch direct repertory dialing. a. b. c. OFF HOOK OFF HOOK OFF HOOK (or (or (or ON HOOK ON HOOK ON HOOK & HFI ¡õ & HFI ¡õ & HFI ¡õ ), ), ), Mn SAVE Mn (or (or R/P ) ) SAVE (or MER ), R/P 2. Two-touch indirect repertory dialing. OFF HOOK (or ON HOOK & HFI ¡õ ), An , Ln (or Mn ) Access Pause OFF HOOK , Busy, Come, (or ON HOOK , & HFI ¡õ OFF HOOK ), (or D1 , D2 , & R/P , D3 ), , ..., R/P Dn ON HOOK ON HOOK HFI ¡õ 1. The first R/P functions as a pause key and the second as a first key-in redial key. 2. The pause function can be stored in memory, and only one R/P key can be released to the user. 3. The pause function is executed in normal dialing, redialing, or memory dialing. 4. The pause duration of 2.0 or 3.6 seconds per pause is selected through the keypad. 5. The default pause duration is 3.6 seconds after power on. 6. The pause function timing diagram is shown in Figure 6. Pulse- to-tone (*/T) OFF HOOK D2' , ..., (or Dn' ON HOOK & HFI ¡õ ), D1 , D2 , ..., Dn , */T , D1' , 1. If the mode switch is set to pulse mode, then the output signal will be: D1, D2, ... Dn, Pause (2.0 sec/3.6 sec), 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) 3. The dialer remains in tone mode after the digits have been dialed out and can be reset to pulse mode only by going on-hook. 4. The pause time of pulse-to-tone is default to 3.6 seconds. 5. The pulse-to-tone function timing diagram is shown in Figure 7. - 12 - W91570DN SERIES Flash (F = F1, F2, F3) OFF HOOK (or ON HOOK & HFI ¡õ ), F 1. The dialer will execute a flash break time of 600 mS (F1), 300 mS (F2), or 100 mS (F3) and pause time of 1S before the next digit (except flash key) is dialed out. 2. Flash keeps first priority in normal dialing but insert flash can be stored into memory when flash is the first digit in memory. In this condition, only one flash key can be released to the user. a. E, F1, D1, D2, D3, E, Mn then the digit stored in Mn will be F1, D1, D2, D3. b. E, D1, F1, D2, D3, E, Mn then the digit stored in Mn will be D1, D2, D3. c. F1, D1, D2, D3, E, Mn then the digit stored in Mn will be D1, D2, D3. 3. The system will return to the initial state after the flash pause time is finished. 4. Keyboard functions are inhibited when flash break is being executed. 5. The flash timing diagram is shown in Figure 8. Mute OFF HOOK (or ON HOOK & HFI ¡õ ), MUTE 1. The MUTE is switched on and off by a toggle switch. 2. The function timing diagram is shown in Figure 9. Hold Key OFF HOOK (or ON HOOK & HFI ¡õ ), HOLD1 (or HOLD2 ) 1. The hold function is toggled on and off by Hold1 or Hold2 key. When the hold function is toggled on, the hold mark (icon 4) will be lit and all key-ins (except hold keys and icon keys) will be ignored. 2. The following are examples of hold function toggled on and off: a. b. c. d. OFF HOOK OFF HOOK OFF HOOK ON HOOK , , , & HOLD1 HOLD1 HOLD1 HFI ¡õ (or (or (or , HOLD2 HOLD2 HOLD2 HOLD1 ), ), ), (or HOLD1 HFI ¡õ ON HOOK HOLD2 ), , HFI ¡õ HFI ¡õ (or HOLD2 ) 3. Hold1 and Hold2 have the same function in off-hook state. The difference between Hold1 and Hold2 are shown as follows: a. If OFF HOOK , HOLD1 (or HOLD2 ), ON HOOK , HOLD1 is entered, then the dialer will be off-line. Publication Release Date: May 1997 Revision A2 - 13 - W91570DN SERIES If OFF HOOK , HOLD1 (or HOLD2 ), ON HOOK , HOLD2 is entered, then the dialer stay at hold function. b. If ON HOOK & HFI ¡õ , HOLD1 (or HOLD2 ), HOLD1 is entered, then the dialer will be off-line. If ON HOOK & HFI ¡õ , HOLD1 , (or HOLD2 ), HOLD2 is entered, then the dialer stay at hold function. 4. The function timing diagram is shown in Figure 10(a), 10(b), 10(c). Adjusting Time Setting OFF HOOK SET RTC ¡õ (or (or ON HOOK ON HOOK & HFI ¡õ ) ), SET RTC ¡õ , HOUR , MIN , 1. Only HOUR and MIN keys are valid in set RTC mode. 2. Hours and minutes count forward as long as the HOUR or MIN key is pressed. 3. The on/off function of SET RTC is toggled, and the dialer will go back to a previous state after the toggle off SET RTC function. 4. If the dialing sequence D1, D2, ..., Dn (including flash and pause) has not finished, SET RTC (or 'RTC' key pressed) will be ignored. RTC Display Mode OFF HOOK (or ON HOOK & HFI ¡õ ), RTC 1.The real time clock display mode can be toggled on and off by RTC key. 2. The icon display will not be changed when enter RTC display mode and set RTC mode. Check Key OFF HOOK , ..., etc.) The redial (or memory) content will be displayed on the LCD when either is keyed in. R/P or OKR (or ON HOOK & HFI ¡õ ), CHK , R/P (or OKR , SAVE , Mn - 14 - W91570DN SERIES Auto Redial If ARD pin = VDD or VSS, the auto redial function is selected: OFF HOOK (or ON HOOK & HFI ¡õ ), OKR Time Zone (A) Time Zone (B) Time Zone (A) Time Zone (B) Time Zone (C) waiting interval Break Time Pause Auto dialing Time repeat till n-1 times. Break Time Pause Time waiting interval Auto dialing 1. During time zone (B) the keypads are inhibited, and in time zone (A), (C) the auto redial can be interrupted by pressing any keypad or by going off-hook. 2. The visible dialing number will be blinking during the waiting time interval. 3. If OKR is the first key-in after off-hook or handfree then the first break and pause time will be ignored. 4. The following show examples to interrupt auto redial function: OFF HOOK (or ON HOOK & HFI ¡õ ), OKR , Any Keypad (at break time and waiting interval) 5. If ON HOOK & HFI ¡õ , OKR , OFF HOOK a. When in time zome (A) or (C), the auto-redial function will be interrupted and changed to hook mode after OFF HOOK b. When in time zome (B), the auto-redial functiion will continue and changed to hook mode after OFF HOOK 6. If ON HOOK & HFI ¡õ , OKR , HFI ¡õ (any time) is entered, the dialer will be off-line. 7. The auto redial function timing diagram is shown in Figure 11(a), 11(b). 8. The calling time will auto-count when the auto-redial function is interrupted in break time zone (A) and (C). TIM OFF HOOK (or ON HOOK & HFI ¡õ ), D1 , D2 , ..., Dn (or Redialing or Repertory dialing 1 ), CONVERSATION 1. If no key is pressed after dialing is finished, the LCD will display counting time after 6 seconds. 2. If the dialing sequence D1, D2, ..., Dn has not finished, TIM will be ignored. 3. The timer will be initialized by flash and auto redial. Publication Release Date: May 1997 Revision A2 - 15 - W91570DN SERIES Cascaded and Mixed Dialing Cascaded Dialing 1. Definition of cascaded dialing: In cascaded dialing, a new sequence may be pressed before the previous sequence has been sent out completely. The following are examples of cascaded dialing: Example 1: Example 2: Example 3: Normal dialing + Repertory dialing 1 + Normal dialing + Repertory dialing 2 + Repertory dialing 2 +... +... +... Repertory dialing 1 Redialing + Normal dialing + Repertory dialing 1 2. Normal dialing, redialing, or repertory dialing as represented by each rectangle above is treated as one sequence. 3. At most 64 digits are allowed in cascaded dialing, but there is no limitation on the number of sequences. 4. The content of cascaded dialing may a combination of normal dialing, redialing, and repertory dialing. Redialing is vaild only as the first key-in, however. 5. If ON HOOK , OFF HOOK , OKR is entered, then the cascaded dialing sequence described in the above examples will be dialed out only if there are not more than 32 digits. If the sequence exceeds 32 digits then the redialing is inhibited. Mixed Dialing 1. Definition of mixed dialing: The examples of cascaded dialing given above are also examples of mixed dialing except that in mixed dialing a new sequence may be accepted only when the previous sequence has been dialed out completely. 2. There is no limitation on the number of digits and sequences in the mixed dialing. 3. The content of mixed dialing may be a combination of normal dialing, memory dialing, or one-key redialing. 4. If ON HOOK , OFF HOOK , OKR is entered, then the mixed dialing sequence described in the above examples will be dialed out only if the total number of digits does not exceed 32. If the total exceeds 32 digits, then redialing is inhibited. Combining of Cascaded and Mixed Dialing 1. Cascaded dialing and mixed dialing may be combined, and each follows the rules described above. 2. To apply redialing to combinations of cascaded and mixed dialing: ON HOOK , OFF HOOK , OKR then redialing will be executed only if the total number of digits does not exceed 32. Otherwise, the redialing is inhibited. - 16 - W91570DN SERIES 3. If there had been n cascaded sequences with a total of 60 digits dialed, then for the (n+1)th cascaded sequence, one 4-digit normal dialing sequence or one complete repertory dialing sequence (length up to 32 digits) can be dialed. The (n+2)th sequence will not be accepted for cascaded dialing. 4. After a total of 64 digits of cascaded dialing have been completed, mixed dialing can be added. ABSOLUTION MAXIMUM RATINGS PARAMETER DC Supply Voltage SYMBOL VDD−VSS VIL Input/Output Voltage 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 -0.5 to +70 -55 to +125 mW °C °C V UNIT V Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device. ELECTRICAL CHARACTERISTICS 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 Tone Output Voltage Pre-emphasis SYM. VDD IOP ISB IMR VTO CONDITIONS Tone, Unloaded Pulse, Unloaded HKS = 0, Unloaded and no key entry HKS = 1 VDD = 1.0V Row group RL = 10 KΩ Col/Row MIN. 2.0 130 - TYP. 0.5 0.4 150 2 MAX. 5.5 0.7 0.5 15 0.5 170 3 UNIT V mA µA µA mVrm s dB VDD = 2.0 to 5.5V - 17 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES DC Characteristics, continued PARAMETER DTMF Distortion DTMF Output DC Level DTMF Output Sink Current DP Output Sink Current SYM. THD VTDC ITL IPL VCH VCL ICH ICL VSH VSL ISH ISL VON VOFF VDC VHFIH VHFIL ITML IHMH IHML IKML IKD IKS RK RCIP RHK CONDITIONS RL = 10 KΩ VDD = 2.0 to 5.5V VDD = 2.0 to 5.5V VTO = 0.5V VPO = 0.5V VTMO = 0.5V VHMO = 2.5V VHMO = 0.5V VTMO = 0.5V VI = 0V VI = 2.5V B/M, HFI - MIN. 1.0 0.2 0.5 4.2 -20 20 4.2 -5 5 2.34 0.8 VDD 0.5 0.5 0.5 0.5 4 200 100 - TYP. -30 4.5 0 4.5 0 2.6 1.5 500 MAX. -23 3.0 4.8 0.3 4.8 0.3 1.65 100 VDD 0.2 VDD 80 400 5 2000 UNIT dB V mA mA V µA V µA Vrms mV V V mA mA mA mA µA µA KΩ KΩ KΩ Common Output Voltage Common Output Current Segment Output Voltage Segment Output Current RMS Voltage Across a Segment Average DC Offset Voltage HFI High Voltage HFI Low Voltage T/P MUTE Output Sink Current H/P MUTE Output Drive Current H/P MUTE Output Sink Current K MUTE Output Sink Current Keypad Input Drive Current Keypad Input Sink Current Keypad Resistance Control Input Pull Up/Down Resistor HKS Input Pull High Resistor AC CHARACTERISTICS - 18 - W91570DN SERIES (VDD−VSS = 2.5V, FOSC. = 3.58 MHz, TA = 25° C, all outputs unloaded.) PARAMETER Key-in Debounce Key Release Debounce Off Hook Delay Time First Key-in Delay Time On Hook Debounce Time Key Tone Frequency Key Tone Duration Key Tone Delay Pulse Mute Delay Pre-digit-pause 10 ppS Pre-digit-pause (2) 20 ppS Inter-digit Pause (Auto Dialing) Make/Break Ratio Tone Output Duration Inter-tone Pause Flash Break Time Flash Pause Time Pause Time One Key Redialing Break Time One Key Redialing Pause Time (1) SYM. TKID TKRD TOFD TFKD TOHD FKT TKTD TKD TMD TPDP1 TPDP2 TIDP1 TIDP2 M:B TTD TITP CONDITIONS Unlock Lock B/M = VDD B/M = VSS B/M = VDD B/M = VSS B/M = VDD B/M = VSS 10 ppS 20 ppS B/M = VDD B/M = VSS - MIN. - TYP. 20 20 300 300 150 20 1.2 35 20 40 33.3 40 33.3 20 16.7 800 500 40:60 33:67 87 87 600 300 100 1 3.6 2.0 4 1 MAX. - UNIT mS mS mS mS mS KHz mS mS mS mS mS mS % mS mS mS S S S S F1 TFB TFP TP TRB TRP F2 F3 F1, F2, F3 R/P1 R/P2 - - - 19 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES AC Characteristics, continued PARAMETER Auto Redialing Break Time Auto Redialing Pause Time Auto Redialing Waiting Interval LCD Frame Frequency SYMBOL TARB TAPR TWI FLCD CONDITIONS ARD = VDD ARD = VSS ARD = VDD ARD = VSS ARD = VDD ARD = VSS - MIN. - TYP. 4 30 1 1 25 30 32 MAX. - UNIT S S S Hz RTC DC CHARACTERISTICS (VRTC = 1.5V, VSS = 0V , FOSC. = 32,768 Hz, TA = 25° C, all outputs unloaded.) PARAMETER Supply Voltage Supply Current OSC. Starting Time OSC. Output Built-in Cap. OSC. in Trimmer Cap. Frequency Stability SET RTC Input High Voltage SET RTC Input Low Voltage Notes : SYMBOL VRTC IRTC TOSC CO CTRIM ∆f/f VSETH VSETL CONDITIONS No Load Cl = 12.5 pF VDD−VSS = 1.3 to 1.6V - MIN. 1.2 5 VDD -0.3 VSS TYP. 1.5 2.0 25 - MAX. 1.8 4.0 3 35 1 VDD VSS +0.3 UNIT V µA S pF pF ppM V V 1. Crystal parameters suggested for proper operation are Rs < 100Ω, 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. and - 20 - W91570DN SERIES TIMING WAVEFORMS HKS KEY IN DP/C10 T/P MUTE < 600mS < 300mS TKRD 4 2 MB MB 3 TKID 2 TKID TIDP TIDP TPDP TMD TIDP TPDP TIDP H/P MUTE TKD KT DTMF OSC. OSCILLATION Low OSCILLATION Figure 1(a). Normal Dialing Timing Diagram (Pulse Mode without Lock Function) HKS KEY IN DP/C10 T/P MUTE H/P MUTE < 600mS < 300mS TKRD 4 TKID MB 3 TOFD 2 MB 2 TKID TIDP TPDP TIDP TPDP TIDP TFKD TMD TMD TKD KT DTMF OSC. Low OSCILLATION OSCILLATION Figure 1(b). Normal Dialing Timing Diagram (Pulse Mode with Lock Function) - 21 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES Timing Waveforms, continued HKS KEY IN DP/C10 T/P MUTE < 600mS TKRD R/P TKID MB MB TPDP TIDP TIDP TIDP TMD H/P MUTE TKD KT DTMF OSC. Low TMD OSCILLATION Figure 1(c). Auto Dialing Timing Diagram (Pulse Mode without Lock Function) HKS KEY IN DP/C10 T/P MUTE H/P MUTE < 600mS 300mS R/P TKID MB TOFD MB TIDP TPDP TIDP TIDP TFKD TMD TMD KT DTMF OSC. Low OSCILLATION Figure 1(d). Auto Dialing Timing Diagram (Pulse Mode with Lock Function) - 22 - W91570DN SERIES Timing Waveforms, continued HKS KEY IN DTMF < 600mS < 300mS TKRD 4 2 5 2 TKID TKRD 3 TKID TTD T/P MUTE H/P MUTE KT DP/C10 OSC. TKD TITP TITP TITP TITP Low High OSCILLATION OSCILLATION OSCILLATION Figure 2(a). Normal Dialing Timing Diagram (Tone Mode without Lock Function) HKS KEY IN DTMF < 600mS < 300mS TKRD 4 TKD TTD TITP TITP 2 5 2 TKID 3 TITP T/P MUTE H/P MUTE KT DP/C10 OSC. TOFD TFKD Low OSCILLATION OSCILLATION Figure 2(b). Normal Dialing Timing Diagram (Tone Mode with Lock Function) - 23 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES Timing Waveforms, continued HKS KEY IN DTMF < 600mS TKRD R/P TKID TTD T/P MUTE H/P MUTE KT DP/C10 OSC. TKD TITP TITP Low High TOHD OSCILLATION Figure 2(c). Auto Dialing Timing Diagram (Tone Mode without Lock Function) HKS KEY IN DTMF < 600mS TKRD R/P TKD TTD T/P MUTE H/P MUTE KT DP/C10 OSC. TOFD TOHD OSCILLATION 300mS TITP TITP TFKD Low Low Figure 2(d). Auto Dialing Timing Diagram (Tone Mode with Lock Function) - 24 - W91570DN SERIES Timing Waveforms, continued HKS KEY IN DP/C10 < 600mS 300mS OKR OKR TKID MB TIDP TRB MB TOFD T/P MUTE TFKD H/P MUTE TPDP TMD TRP TPDP TIDP KT DTMF OSC. Low OSCILLATION Figure 3. One-key Redial Timing Diagram HKS HFI HFO T/P MUTE H/P MUTE DP/C10 TOFD High Low TFKD TOHD TOHD OSC. OSC. OSC. OSC. Figure 4(a). Handfree Timing Diagram (with Lock Function) - 25 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES Timing Waveforms, continued HKS HFI HFO T/P MUTE H/P MUTE DP/C10 TOHD High Low High TOHD OSC. Figure 4(b). Handfree Timing Diagram (without Lock Function) HKS KEY IN MER TKID DP/C10 MB MB TIDP TP TPDP T/P MUTE H/P MUTE TITP DTMF OSC. OSCILLATION Figure 5. Mercury Function Timing Diagram - 26 - W91570DN SERIES Timing Waveforms, continued HKS KEY IN DP/C10 T/P MUTE < 600mS 300mS 2 R/P 3 TOFD TKID MB MB TIDP TPDP TP TMD TMD TPDP H/P MUTE KT DTMF OSC. TFKD Low OSCILLATION OSCILLATION Figure 6. Pause Function Timing Diagram (Pulse Mode) HKS KEY IN DP/C10 T/P MUTE < 600mS 300mS 2 TKID MB */T 3 TOFD TPDP TP TIDP H/P MUTE TMD KT DTMF OSC. TFKD TITP OSCILLATION OSCILLATION Figure 7. Pulse to Tone Timing Diagram - 27 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES Timing Waveforms, continued HKS Low KEY IN F TKID F F TFB TFP TKID 3 TKID DP/C10 T/P MUTE H/P MUTE KT DTMF TITP OSC. OSCILLATION Figure 8. First Priority Flash Timing Diagram HKS 2 TKID DP/C10 MB MUTE Low KEY IN 4 2 MUTE TKID TIDP MB TKID TIDP MB TIDP TPDP T/P MUTE H/P MUTE KMUTE OSC. OSCILLATION Figure 9. Mute Timing Diagram Timing Waveforms, continued - 28 - W91570DN SERIES HKS HFI HOLD KEY HFO T/P MUTE H/P MUTE CHIP ENBLE OFF HOOK ON HOOK High Low Figure 10(a). Hold and Handfree Timing Diagram Note: The HOLD KEY cannot be enabled when the chip is disabled. HKS HFI HOLD KEY HFO OFF HOOK T/P MUTE H/P MUTE CHIP ENBLE High Figure 10(b). Hold and Handfree Timing Diagram Note: The HFI and HOLD KEY inputs will toggle the HFO signal; as soon as either HFI or HOLD KEY is activated, the HFO signal will go high and previous activate inputs will be ignored. - 29 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES Timing Waveforms, continued HKS HFI HOLD KEY HFO ON HOOK T/P MUTE H/P MUTE CHIP ENBLE High Figure 10(c). Hold and Handfree Timing Diagram Note: Changing the state of the HKS signal from high to low will initialize the HFO and HPM MUTE signals. KEY IN OKR TKD KT TARP TARB AUTO REDIALING INTERVAL WAITING INTERVAL REPEAT TILL N-1 TIMES TARP TARB AUTO REDIALING INTERVAL WAITING INTERVAL DP/C10 OSC. OSCILLATION Figure 11(a). Auto Redialing Timing Diagram Notes: 1. The auto redial function is enabled in off-hook or handfree state. 2. If OKR is the first key-in after off-hook or handfree then the first TARB and TARP will be ignored. - 30 - W91570DN SERIES Timing Waveforms, continued KEY IN OKR TKD Any Keypad TKD AUTO REDIALING INTERVAL AUTO REDIALING INTERVAL KT T ARP TARB WAITING INTERVAL T ARP TARB WAITING INTERVAL DP/C10 OSC. OSCILLATION Figure 11(b). Auto Redialing Timing Diagram - 31 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES LCD DISPLAY FORMAT A. Normal Dialing Off hook or press the "HFI" switch (Here tone mode was selected). Blinking Dial" 0123456789123456" and "78" B. Redialing, Save Dialing, One Touch Dialing Off hook or press the "HFI" switch (Here tone mode was selected). Blinking Press the "R/P", "OKR", "SAVE" or "Mn" key (Redial or SAVE or Mn = "8123456789") - 32 - W91570DN SERIES C. Abbreviated Auto Dialing Off hook or press the "HFI" switch (Here tone mode was selected). Blinking Press the "A1" key in chip enable condition (L5 = "9375607", here L5 is the fifth memory) Press the "5" key D. Memory Check a. Off-hook or press the "HFI" switch (L6 = "314P4430256", and here handfree and tone mode were selected) Blinking Press the "CHK" key Press the "A1" key (The auto(A) is shown on check and store mode) Press the "6" key - 33 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES b. Off-hook or press the "HFI" switch (M1= "886P35P770066PP7126", and here pulse mode was selected) Blinking Press the "CHK" key Press the "M1" key (Display 1 to 16 digits) Blinking Press "any key" (Display 17 to 19 digits) E. Timer Function a. Off-hook or press the "HFI" switch (here pulse mode was selected) Blinking Press the "TIM" key (Display last calling time) - 34 - W91570DN SERIES Dial "9375607" If "9375607" is dialed completed, the system will start timer after 6 seconds (Timer will start counting up) Press the "TIM" key will stop) (Timer b. Off-hook or press the "HFI" switch (here pulse mode was selected) Blinking Dial "9375607" If "9375607" is dialed completed press the "TIM" key (Timer will start counting up) - 35 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES Press the "CHK" key (L6 = "314P4430256") Press the "A1" key Press the "6" key The system will go back to timer mode after 6 seconds (Timer count up continuously) Press the "F1", "F2" or "F3" key (The timer will stop and LCD will display a flash mark and flash pattern) After flash break is executed Blinking After flash pause is executed Blinking - 36 - W91570DN SERIES F. RTC Setting Function On-hook (Display real time) Off-hook, before SET RTC pin was switched ON (Here tone mode was selected) Blinking Entering "Setting Mode" Adjusting "Hour" (Hour counts forward as long as pressing) Blinking Adjusting "Minute" (Minute counts forward as long as pressing) On-hook or switching SETRTC pin OFF (Here on-hook was selected) - 37 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES G. RTC Display Function On-hook (Display real time) Off-hook or press the "HFI" switch (Here off-hook and tone mode was selected) Blinking Press the "MER" key (MER = "035PP770066") Blinking Press the "RTC" key when "MER" dialing is completed within 6 seconds. Press the "RTC" key again If the "MER" is dialed completed for 6 seconds - 38 - W91570DN SERIES H. Mute Function Off-hook or press the "HFI" switch Blinking Dial "9375607" If "9375607" is dialed completed Press the "TIM" key (Timer will start counting up) Press the "MUTE" Blinking Press the "MUTE" key again - 39 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES LCD PATTERN FOR DATA 1 2 3 4 5 6 7 8 9 0 * # PT P E CHECK A F LOCK MUTE ARD/ Icon11 Icon12 Icon13 Icon14 Icon15 Icon16 Tone/ Icon7 Hold/ Icon4 Handfree/ Icon5 Timer/ Icon6 Inuse/ Flash/ Icon Icon3 2 Pause/ Icon1 Page 1 (for A1)/ Icon8 Page 2 (for A2)/ Icon9 Mercury/ Iocn10 Notes: 1. The icon1 to icon 10 are controlled by function operation. 2. The icon 12 to icon16 can be toggled on/off individually, irrespective of keypad function. 3. The off-hook (or hand free) state of icon12 is on, the other icons are off. 4. The icon2 always blinked after power on. - 40 - W91570DN SERIES LCD PANEL PATTERN 3 2 3 1 3 0 2 9 2 8 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 9 8 7 6 5 4 3 2 1 (SEG) C O M 4 C O M 3 C O M 2 C O M 1 (COM) BONDING PAD DIAGRAM 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 (0,0) X Y 1 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 34 35 36 37 38 39 40 41 42 Notes: 1. The substrate must be connected to VSS - 41 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES 2. The chip size is 3450 × 4280 µ m2 - 42 - W91570DN SERIES Bonding Pad List PAD NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 PAD NAME SEG29 SEG30 SEG31 SEG32 TEST K MUTE KT TEST1 VDD NC/ LOCK B/M DTMF SET RTC VSS H/P MUTE T/P MUTE HFO DP / C10 MODE COL1 COL2 COL3 COL4 COL5 COL6 COL7 COL8 COL9 ROW1 ROW2 ROW3 ROW4 ROW5 XT1 XT1 HKS PIN NAME 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 X -1205.80 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1546.90 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1581.90 -1196.70 -1013.70 -830.50 -647.50 -464.30 -281.30 -98.10 84.90 268.10 435.60 585.60 735.60 Y 1988.70 1871.70 1716.70 1561.70 1389.40 1231.40 1073.20 915.20 749.00 579.10 421.10 248.00 67.00 -241.00 -391.00 -549.20 -707.20 -865.40 -1023.40 -1194.10 -1377.10 -1560.30 -1743.30 -1926.50 -2009.80 -2009.80 -2009.80 -2009.80 -2009.80 -2009.80 -2009.80 -2009.80 -2009.80 -2009.80 -2009.80 -2009.80 PAD NO. 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 PAD NAME TESTL APSET XT2 XT2 VLCD VRTC2 CN CP COM COM COM COM SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 PIN NAME 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 X 1514.90 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1589.40 1407.40 1158.00 1003.00 848.00 693.00 538.00 383.00 228.00 72.90 -82.10 -237.10 -392.10 Y -2009.80 -1805.40 -1638.20 -1488.20 -1333.60 -1179.00 -996.00 -844.00 -668.90 -513.90 -358.90 -203.90 -48.90 106.10 261.10 416.10 571.10 726.10 881.10 1036.10 1191.20 1346.20 1501.20 1720.60 1987.70 1987.70 1987.70 1987.70 1987.70 1987.70 1987.70 1987.70 1987.70 1987.70 1987.70 1987.70 - 43 - Publication Release Date: May 1997 Revision A2 W91570DN SERIES Bonding Pad List, continued PAD NO. 38 39 40 41 14 PAD NAME HFI VRTC1 TEST2 ARD DISP PIN NAME 37 38 39 40 X 885.60 1040.70 1198.80 1356.80 -1581.90 Y -2009.80 -2009.80 -2009.80 -2009.80 -91.00 PAD NO. 78 79 80 81 PAD NAME SEG25 SEG26 SEG27 SEG28 PIN NAME 77 78 79 80 X -547.10 -702.10 -857.10 -1012.10 Y 1987.70 1987.70 1987.70 1987.70 Note: Pad 14 is for 12-digit LCD display bonding only. - 44 - W91570DN 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: 852-27513100 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. - 45 - Publication Release Date: May 1997 Revision A2