W91580 Datasheet, PDF (6/19 Pages) Winbond – 24-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND HOLD FUNCTIONS

W91580 SERIES
• S: Store function key
• F1, F2, F3: Flash keys
• R: One-key redial
• H: Hold function key
• DP /C9 : This key is connected to pin DP /C9 via a bipolar switching transistor and a diode.
• M0j: Direct or indirect (MEMO + M0j = M1j) repertory memory
• M1j: Direct repertory dialing
• EMi: One-touch memory for emergency call
• */T: * & P→T
• CLR: Clear key
• R/P: Redial and pause function key
• MER: One-touch memory for mercury code dialing
• MEMO: Indirect repertory dialing function key
Note: Dn = 0 to 9, *, #, Mij = M00 to M19 (i = 0, 1; j = 0 to 9).
Normal Dialing
OFF HOOK (or ON HOOK & _HFI
), D1 , D2 , …, Dn
1. D1, D2, ..., Dn will be dialed out.
2. Dialing length is unlimited, but redial is inhibited if length exceeds 32 digits.
Redialing
1. OFF HOOK , D1 , D2 , …, Dn
BUSY, Come
ON HOOK , OFF HOOK
(or ON HOOK & _HFI
), R/P
or ON HOOK & _HFI
, D1 , D2 , …, Dn , BUSY, _HFI
Come
HFI
, R/P
The R/P key can execute the redial function only as the first key-in after off-hook; otherwise, it will
execute the pause function.
2. OFF HOOK (or ON HOOK & _HFI
), D1 , D2 , …, Dn , R
a. The one-key redial function timing diagram is shown in Figure 4.
b. If dialing
of
D1 to Dn is completed, pressing the R key will cause the pulse output
pin to go low for 2.2 seconds. Break time and a 600 mS pause will automatically be added.
c. If the R key is pressed before the pulses for the number dialed out are completed, it will be
ignored.
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