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參數(shù)資料
| 型號： | BU8317KV |
| 英文描述： | Telephone Circuit (Support) |
| 中文描述： | 電話線路（支援） |
| 文件頁數(shù)： | 11/14頁 |
| 文件大?。?/td> | 230K |
| 代理商： | BU8317KV |
305
Communication ICs
BU8317KV
Standby mode
(1)
Setting the standby mode
The standby mode is set by setting RE to L and WE to L.
Oscillation stops and the line current falls to an extremely low level.
The contents of the LED and LCD registers are reset (all data cleared to 0), and all LEDs and LCDs are
turned off.
The LCD output goes LOW, and the bias current channel is cut off.
The only effective key input is the SR key; no input is accepted from the keypad.
(2)
Cancelling the standby mode
The standby mode is cancelled by executing the register reset command.
Setting SR to LOW in any state other than RE = LOW and WE = LOW immediately cancels the standby
mode.
Setting SR to LOW when RE = LOW and WE = LOW initiates oscillation but does not cancel the standby
mode. Setting SR to HIGH stops oscillation once again.(If “on debounce” is valid for the SR key and KD
has output a LOW level, oscillation continues until an “off debounce” becomes valid.)
Standby mode setting example
1
At RE = LOW, WE = LOW, the standby mode is set, and oscillation stops.
2
In standby mode, no input is accepted.
3
Setting the SR pin to LOW initiates oscillation even in the standby mode.
(SR = LOW takes priority over RE = LOW, WE = LOW.)
4
When the SR pin is open (HIGH), RE = LOW and WE = LOW, so oscillation stops and the standby mode continues
to be effective.
5
Setting the SR pin LOW initiates oscillation even in the standby mode.
6
When RE = LOW, WE = LOW is no longer true, the standby mode is cancelled, and oscillation continues even if the
SR pin is open (HIGH).
7
Data is set in the output serial register at the falling edge of RE and when SR = LOW, and can be read.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| BU8320A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| BU8320AF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| BU8321 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| BU8321F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| BU8322 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
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