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參數資料
| 型號： | W9145L |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 15-MEMORY TONE/PULSE DIALER WITH LOCK AND HANDFREE FUNCTION |
| 中文描述： | TELEPHONE DIALER CKT, PDIP22 |
| 封裝： | PLASTIC, DIP-22 |
| 文件頁數： | 4/18頁 |
| 文件大小： | 209K |
| 代理商： | W9145L |
W9145 SERIES
- 4 -
Pin Description, continued
SYMBOL
22-PIN
24-PIN
I/O
FUNCTION
HFI
,
HFO
-
12, 13
I, O
Handfree control pins.
A low pulse on
HFI
toggles on the handfree control state.
Status of the handfree control state is indicated in the
following table:
HOOK SW.
-
On Hook
Off Hook
On Hook
Off Hook
Off Hook
CURRENT STATE
NEXT STATE
HFO
Low
High
High
-
Low
High
INPUT
HFI
HFI
HFI
Off Hook
On Hook
On Hook
HFO
High
Low
Low
Low
Low
High
DIALING
Yes
No
Yes
Yes
No
Yes
HFI
pin is pulled to V
DD
by internal resistor.
Key tone signal output. A 1.2 KHz key tone will be
generated when any key is depressed in pulse mode or
when function keys are depressed in tone mode.
The function of this terminal is to prevent "0" dialing in
and "9" dialing under PABX system long distance call
control. When the first key input after reset is 0 or 9, all
key inputs, including the 0 or 9 key, become invalid and
the chip generates no output. The telephone is
reinitialized by a reset.
KT
12
14
O
LOCK
15
(
W9145L
only
)
17
(
W9145AL
only)
I
LOCK PIN
FUNCTION
Normal dialing mode
"0," "9" dialing inhibited
"0" dialing inhibited
V
Floating
V
DD
SS
TEST
15
(W9145
only)
17
(
W9145A
only)
I
During normal operation, the TEST pin should be tied to
V
DD
, thereby inhibiting the single tone and setting the
pulse rate to 10 ppS.
This pin is a CMOS inverter output.
The timing diagram is shown in Figure 1. Flash key will
cause
DP
/
C5
to go active in either pulse or tone mode.
DP
/
C5
10
10
O
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| W91462N | 制造商:WINBOND 制造商全稱:Winbond 功能描述:3-MEMORY TONE/PULSE DIALER WITH SAVE FUNCTION |
| W91463 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone/Pulse Telephone Dialer |
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