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參數資料
| 型號： | W91820AN |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | 13-Memory Tone/Pulse Dialer With Handfree,Hold And Lock Functions(具有13個數碼存儲器、免提、保持和上鎖功能的音頻/脈沖撥號器) |
| 中文描述： | 13內存音頻/脈沖免提，撥號持有和鎖定功能（具有13個數碼存儲器，免提，保持和上鎖功能的音頻/脈沖撥號器） |
| 文件頁數： | 5/22頁 |
| 文件大小： | 260K |
| 代理商： | W91820AN |
W91820N SERIES
Publication Release Date: May 1999
- 5 -
Revision A2
Pin Description, continued
SYMBOL
20-PIN
22-PIN
I/O
FUNCTION
HFI, HFO
-
11, 12
I, O Handfree control pins.
A low pulse on the HFI input pin toggles the handfree
control state. The 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
The HFI pin is pulled to V
DD
by an internal resistor.
A detailed timing diagram is shown in Figure 3.
BLOCK DIAGRAM
DTMF
XT
XT
HKS
MODE
RAM
COUNTER
SYSTEM CLOCK
GENERATOR
LOCATION
LATCH
D/A
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
READ/WRITE
HFI
ROW
(R1 ~ R4, Vx/R5)
COLUMN
(C1 ~ C4, Vss)
CONTROL
LOGIC
PULSE
CONTROL
LOGIC
KEYBOARD
INTERFACE
CONVERTER
LOCK
T/P MUTE
KT
HFO
H/P MUTE
DP
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| W91F820ALN | 13-FLASH MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS |
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相關代理商/技術參數 |
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| W91820LN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:13-MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS |
| W91820N | 制造商:WINBOND 制造商全稱:Winbond 功能描述:13-MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS |
| W91822AN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:13-MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS |
| W91822N | 制造商:WINBOND 制造商全稱:Winbond 功能描述:13-MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS |
| W91824AN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:13-MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS |
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