- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376953 > DS1501Y Real-Time Clock PDF資料下載
參數(shù)資料
| 型號： | DS1501Y |
| 英文描述： | Real-Time Clock |
| 中文描述： | 實(shí)時時鐘 |
| 文件頁數(shù)： | 11/30頁 |
| 文件大?。?/td> | 291K |
| 代理商： | DS1501Y |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁當(dāng)前第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
DS1501/DS1511
11 of 30
The watchdog timer is reloaded when the processor performs a write of the Watchdog registers. The
time-out period then starts over. The watchdog timer is disabled by writing a value of 00h to both
watchdog registers. The watchdog function is automatically disabled upon power-up by the POWER on
RESET setting WDE=0 and WDS=0. The watchdog registers are not initialized at power up and should
be initialized by the user.
The following summarizes the configurations in which the watchdog can be used.
1.
WDE=0 and WDS=0:
WDF will be set.
2.
WDE=0 and WDS=1:
WDF will be set.
3.
WDE=1 and WDS=0:
WDF and IRQF will be set, and the
IRQ
pin will be pulled low.
4.
WDE=1 and WDS=1:
WDF will be set, the
RST
pin will be pulled low for a duration of 40 ms to
200 ms, and ‘WDE’ will be reset to ‘0’.
CLEARING IRQ AND FLAGS
The Time of Day/Date Alarm Flag (TDF), Watchdog Flag (WDF), and Interrupt Request Flag (IRQF),
are cleared by reading the flag register (0EH) as shown in Figures 2a, 2b, and 2c. The address must be
stable for a minimum of 15 ns (t
IRQZ
). After the tIRQZ requirement has been met, either a change in
address (figure 2a), a rising edge of
OE
(figure 2b), or a rising edge of
CS
(Figure 2c) will cause the flags
to be cleared. The
IRQ
pin will go inactive after the IRQF flag is cleared.
IRQ AND FLAG WAVEFORMS (ADDRESS RELATED)
Figure 2a
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1501YE | Real-Time Clock |
| DS1501YS | Real-Time Clock |
| DS1501 | Y2K-Compliant Watchdog Real-Time Clocks |
| DS1511 | Y2K-Compliant Watchdog Real-Time Clocks |
| DS1501-DS1511 | Y2K-Compliant Watchdog Real-Time Clocks |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1501Y+ | 功能描述:實(shí)時時鐘 Y2K-Compliant Watchdog 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1501YE | 功能描述:實(shí)時時鐘 Y2K-Compliant Watchdog 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1501YE+ | 功能描述:實(shí)時時鐘 Y2K-Compliant Watchdog 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1501YE+T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK PARALLEL 256BYTE 28TSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC WDOG Y2K 5V 28-TSOP |
| DS1501YE+T&R | 功能描述:實(shí)時時鐘 Y2K-Compliant Watchdog 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。