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參數(shù)資料
| 型號： | DS1308N |
| 英文描述： | 64 X 8 Serial Real Time Clock |
| 中文描述： | 64 × 8串行實時時鐘 |
| 文件頁數(shù)： | 4/14頁 |
| 文件大?。?/td> | 225K |
| 代理商： | DS1308N |
DS1307/1308
4 of 14
DS1307 ADDRESS MAP
Figure 2
CLOCK AND CALENDAR
The time and calendar information is obtained by reading the appropriate register bytes. The real time
clock registers are illustrated in Figure 3. The time and calendar are set or initialized by writing the
appropriate register bytes. The contents of the time and calendar registers are in the Binary-Coded
Decimal (BCD) format. Bit 7 of Register 0 is the Clock Halt (CH) bit. When this bit is set to a 1, the
oscillator is disabled. When cleared to a 0, the oscillator is enabled.
Please note that the initial power on state of all registers is not defined. Therefore it is important to
enable the oscillator (CH bit=0) during initial configuration.
The DS1307/DS1308 can be run in either 12-hour or 24-hour mode. Bit 6 of the hours register is defined
as the 12- or 24-hour mode select bit. When high, the 12-hour mode is selected. In the 12-hour mode, bit
5 is the AM/PM bit with logic high being PM. In the 24-hour mode, bit 5 is the second 10 hour bit (20-23
hours).
On a 2-wire START, the current time is transferred to a second set of registers. The time information is
read from these secondary registers, while the clock may continue to run. This eliminates the need to re-
read the registers in case of an update of the main registers during a read.
DS1307/DS1308 TIMEKEEPER REGISTERS
Figure 3
SECONDS
MINUTES
HOURS
DAY
DATE
MONTH
YEAR
CONTROL
RAM
56 x 8
00H
07H
08H
3FH
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1308U-18 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Current I2C RTC with 56-Byte NV RAM |
| DS1308U-18+ | 功能描述:實時時鐘 LOW CUR 1.8V I2C RTC 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 |
| DS1308U-18+T | 功能描述:實時時鐘 LOW CUR 1.8V I2C RTC 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 |
| DS1308U-3 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Current I2C RTC with 56-Byte NV RAM |
| DS1308U-3+ | 功能描述:實時時鐘 LOW CUR 3V I2C RTC 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 |
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