· Tone/pulse switchable dialer
· Two by 32 digits redial and save memory
· Three by 32 digits one-touch direct repertory memory
· Twenty by 32 digits one-touch direct or two-touch indirect repertory memory
· Pulse-to-tone (*/T) keypad for long distance call operation
· Chain dialing
· Uses 6× 6 or 7 ×7 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 or 20 ppS by mask option
· 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 1.0 S
· Make/break ratio (2:3 or 1:2) selectable by MODE pin
· Mute key for speech network mute
· No key will be accepted except the "HOLD" key when in the Hold mode
· 4-level volume control by V1 and V2 pin - default value is zero
· Key tone output for valid keypad entry recognition
· On-chip power-on reset
· Uses 3.579545 MHz crystal or ceramic resonator
· 22, 24 or 28-pin dual-in-line plastic package
· The different dialers in the W91810N series are shown in the following table:
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The W91810N is a series of tone/pulse switchable telephone dialers with 23 memory, keytone, hold, lock, mute, volume control and handfree dialing control features. These chips are fabricated using Winbond's high-performance CMOS technology and thus offer good performance in low-voltage, lowpower operations.
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| PARAMETER |
SYMBOL |
RATING |
UNIT |
| DC Supply Voltage |
VDD-VSS |
-0.3 to +7.0 |
V |
| Input/Output Voltage |
VIL |
VSS -0.3 |
V |
|
VIH |
VDD +0.3 |
V |
|
VOL |
VSS -0.3 |
V |
|
VOH |
VDD +0.3 |
V |
| Power Dissipation |
PD |
120 |
mW |
| Operation Temperature |
TOPR |
-20 to +70 |
°C |
| Storage Temperature |
TSTG |
-55 to +150 |
°C |
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device.
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