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參數(shù)資料
| 型號： | DS1486P |
| 英文描述： | RAMified Watchdog Timekeeper |
| 中文描述： | RAMified看門狗計時器 |
| 文件頁數(shù)： | 6/17頁 |
| 文件大小： | 251K |
| 代理商： | DS1486P |
DS1486/DS1486P
6 of 17
WATCHDOG ALARM REGISTERS
Registers C and D contain the time for the Watchdog Alarm. The two registers contain a time count from
00.01 to 99.99 seconds in BCD. The value written into the Watchdog Alarm Registers can be written or
read in any order. Any access to Register C or D will cause the Watchdog Alarm to reinitialize and clears
the Watchdog Flag bit and the Watchdog Interrupt Output. When a new value is entered or the Watchdog
Registers are read, the Watchdog Timer will start counting down from the entered value to 0. When 0 is
reached, the Watchdog Interrupt Output will go to the active state. The Watchdog Timer Countdown is
interrupted and reinitialized back to the entered value every time either of the registers is accessed. In this
manner, controlled periodic accesses to the Watchdog Timer can prevent the Watchdog Alarm from
going to an active level. If access does not occur, countdown alarm will be repetitive. The Watchdog
Alarm Registers always read the entered value. The actual count-down register is internal and is not
readable. Writing registers C and D to 0 will disable the Watchdog Alarm feature.
DS1486 RAMIFIED TIMEKEEPER REGISTERS
Figure 2
相關PDF資料 |
PDF描述 |
|---|---|
| DS1486P-120 | RAMified Watchdog Timekeeper |
| DS1486P-150 | RAMified Watchdog Timekeeper |
| DS1486-120 | RAMified Watchdog Timekeeper |
| DS1486-150 | RAMified Watchdog Timekeeper |
| DS1489AJ | Line Receiver |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS1486P-120 | 功能描述:實時時鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1486P-120+ | 功能描述:實時時鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1486P-150 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:RAMified Watchdog Timekeeper |
| DS1487 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Low Power RS-485 1⁄4 Unit Load Multipoint Transceiver |
| DS1487M | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
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