DatasheetsPDF.com

W91550DN Dataheets PDF



Part Number W91550DN
Manufacturers Winbond
Logo Winbond
Description 13-MEMORY TONE/PULSE DIALER WITH LCD AND LOCK FUNCTION
Datasheet W91550DN DatasheetW91550DN Datasheet (PDF)

W91550DN SERIES 13-MEMORY TONE/PULSE DIALER WITH LCD AND LOCK FUNCTIONS GENERAL DESCRIPTION The W91550DN series are Si-gate CMOS IC tone/pulse switchable dialers containing 13 number memories and a 10-digit LCD driver for displaying telephone numbers and calling time, including a 16-digit × 3 one-touch memory, 16-digit × 10 two-touch memory dialing, and 32-digit × 2 redial and save memory. These dialers also provide a secrecy key, flash, two-way handfree dialing, one-key redial, hold and lock fu.

  W91550DN   W91550DN


Document
W91550DN SERIES 13-MEMORY TONE/PULSE DIALER WITH LCD AND LOCK FUNCTIONS GENERAL DESCRIPTION The W91550DN series are Si-gate CMOS IC tone/pulse switchable dialers containing 13 number memories and a 10-digit LCD driver for displaying telephone numbers and calling time, including a 16-digit × 3 one-touch memory, 16-digit × 10 two-touch memory dialing, and 32-digit × 2 redial and save memory. These dialers also provide a secrecy key, flash, two-way handfree dialing, one-key redial, hold and lock functions. FEATURES • • • • • • • • • • • • • • • • • • • • • • • • Tone/pulse switchable dialer Two by 32-digit redial and save memory (or mercury memory) Three by 16-digit one-touch direct repertory memory Ten by 16-digit two-touch indirect repertory memory Memory check function Save/mercury function selected by pin option Typical interdigit pause (IDP): 800 msec (10 ppS) in pulse mode Uses 4 × 7 keyboard Mute key for secrecy control Minimum tone output duration/inter-tone pause: 87/87 mS Flash pause time: 1.2 sec. Flash break time (98, 300, 600 msec) selectable by keypad Pause time (2.0, 3.6, 4.0 sec.) selectable by mask option Pulse-to-tone (*/T) keypad for long distance call operation 0 or 9 dialing inhibition pin for PABX system or long distance dialing lock out Make/break ratio selected by pin option Built-in 10-digit LCD driver for telephone number display and calling time (1/3 duty, 1/2 bias) Built-in calling time from (00:00) to (59:59) On-chip power-on reset and clear LCD On hook debounce: 250 msec in normal mode (20 msec in lock mode) First key-in delay: 300 msec in lock mode Uses 3.579545 MHz crystal or ceramic resonator Packaged in 64-pin QFP The different dialers in the W91550DN series are shown in the following table: TYPE NO. W91550DNF W91550DNF-1 W91550DNH W91550DNH-1 FUNCTION Default pause time is 3.6 sec. and all F1, F2, F3 are first priority. Same as W91550DN except F3 can be stored as a digit. Default pause time is 3.6 sec. and all F1, F2, F3 are first priority. Same as W91550DN except F3 can be stored as a digit. PACKAGE QFP QFP Chip Chip -1- Publication Release Date: November 1998 Revision A3 W91550DN SERIES PIN CONFIGURATION 33 52 64 1 20 NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 NAME KMUTE NO. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 NAME 5C 6A 6B 6C 7A 7B 7C 8A 8B S/ M 8C 9A 9B 9C 10A 10B NO. 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 NAME 10C VSS DTMF B/M TEST NO. 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 NAME C6 R1 R2 R3 R4 XT XT HKS HFI COM3 1A 1B 1C 2A 2B 2C 3A 3B 3C 4A 4B 4C 5A 5B VDD HPM MUTE T/P MUTE ATS DP HFO VLCD CP CN COM1 COM2 LOCK MODE C1 C2 C3 C4 C5 -2- W91550DN SERIES PIN DESCRIPTION SYMBOL Column, Row Inputs PIN 44−49 & 50−53 54, 55 I/O I FUNCTION The keyboard input may be used with either the standard 4 × 7 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. I, O A built-in inverter provides oscillation with an inexpensive 3.579545MHz crystal. Most crystals do not vary by more than 0.02%. The oscillator oscillates in off-hook or handfree mode but oscillation ceases in on-hook mode or when the handfree mode is released. T/P MUTE 40 O 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 breaks. Otherwise, it is switched off. The HPM MUTE is a conventional CMOS inverter output. During pulse dialing, flash break, hold, and mercury mute functions, this pin will output an active high. Otherwise, it remains in a low state. The KMUTE is a CMOS N-channel open drain output. The output transistor is switched on only during the mute function. 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. Pulse or tone mode can be selected any time. HKS XT, XT HPM MUTE 39 O KMUTE 1 O MODE 43 I 56 I Hook switch input. HKS = VDD: 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. DP 42 O This pin is a CMOS inverter output. The timing diagram is shown as Figure 1(a), 1(b), 1(c), 1(d). Flash key will cause DP to go active in either pulse mode or tone mode. -3- Publication Release Date: November 1997 Revision A3 W91550DN SERIES Pin Description, continued SYMBOL DTMF PIN 35 I/O O FUNCTION In pulse mode, this pin remains in low state at all times. In tone mode, it will output a dual or single tone. A 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 VDD, VSS B/M 38, 34 36 I I Power input pins. Make: Break ratio select pin. If B/M = VDD, th.


W90210F W91550DN W91820ALN


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)