W91472 查看數據表（PDF） - Winbond
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W91472 Datasheet PDF : 14 Pages
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W91472N SERIES
6-MEMORY TONE/PULSE DIALER WITH
SAVE AND HANDFREE FUNCTIONS
GENERAL DESCRIPTION
The W91472N series are tone/pulse switchable telephone dialers with five memories, save memory,
and handfree dialing control. These chips are fabricated using Winbond's high-performance CMOS
technology and thus offer good performance in low-voltage and low-power operations.
FEATURES
• DTMF/pulse switchable dialer
• Two by 32 digit redial and save memory
• Five by 16 digit one-touch direct repertory memory
• Pulse-to-tone (*/T) keypad for long distance call operation
• Cascaded dialing
• Uses 5 × 6 keyboard
• Easy operation with redial, flash, pause, and */T keypads
• Pause, P→T (pulse-to-tone) can be stored as a digit in memory
• Dialing rate (10 ppS or 20 ppS) selectable by bonding option
• On-hook debounce time: 150 mS
• Minimum tone output duration: 93 mS
• Minimum intertone pause: 93 mS
• Pause time: 3.6 sec.
• Flash break time (73 mS, 100 mS, 300 mS, or 600 mS) selectable by keypad; pause time is 1.0S
• Make/break ratio (40:60 or 33.3:66.7) selectable by MODE pin
• On-chip power-on reset
• Uses 3.579545 MHz crystal or ceramic resonator
• 18 or 20-pin dual-in-line plastic package
• The different dialers in the W91472N series are shown in the following table:
TYPE NO.
REPLACEMENT
TYPE NO.
PULSE
(ppS)
FLASH
(mS)
M/B
KEY
HANDFREE PACKAGE
TONE
DIALING
(PINS)
W91472N
W91472
10
600/300/73/100
Pin
-
-
18
W91472AN W91472A
10
600/300/73/100
Pin
Yes
Yes
20
W91472BN W91472B
20
600/300/73/100
Pin
-
-
18
W91472CN W91472C
20
600/300/73/100
Pin
Yes
Yes
20
Publication Release Date: May 1997
-1-
Revision A2
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