- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄361797 > W91472NS Telephone Dialer PDF資料下載
參數(shù)資料
| 型號： | W91472NS |
| 英文描述： | Telephone Dialer |
| 中文描述： | 電話撥號器 |
| 文件頁數(shù)： | 4/14頁 |
| 文件大小： | 184K |
| 代理商： | W91472NS |
W91472N SERIES
- 4 -
Pin Description, continued
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
HFI,
HFO
-
10, 11
I, O
Handfree control pins.
A low pulse on the HFI input pin toggles the handfree
control state.
Status of the handfree control state is listed 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 an internal resistor.
Detailed timing diagram is shown in Figure 3.
BLOCK DIAGRAM
ROW
COLUMN
(C1 to C5)
DTMF
XT
XT
HKS
MODE
RAM
COUNTER
SYSTEM CLOCK
GENERATOR
LOCATION
LATCH
D/A
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
READ/WRITE
HFI
(R1 to R4, Vx)
T/P MUTE
HFO
CONTROL
LOGIC
PULSE
CONTROL
LOGIC
KEYBOARD
INTERFACE
CONVERTER
DP/C6
相關PDF資料 |
PDF描述 |
|---|---|
| W91520 | Tone/Pulse Telephone Dialer |
| W91520A | Tone/Pulse Telephone Dialer |
| W91520NS | Telephone Dialer |
| W91521 | Tone/Pulse Telephone Dialer |
| W91521A | Tone/Pulse Telephone Dialer |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| W91473 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473AL | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473B | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473BL | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
發(fā)布緊急采購，3分鐘左右您將得到回復。