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參數(shù)資料
| 型號： | DS1305EN |
| 英文描述： | Serial Alarm Real Time Clock RTC |
| 中文描述： | 串行實時時鐘鬧鐘時鐘 |
| 文件頁數(shù)： | 5/22頁 |
| 文件大?。?/td> | 257K |
| 代理商： | DS1305EN |
DS1305
5 of 22
RTC AND RAM ADDRESS MAP
The address map for the RTC and RAM registers of the DS1305 is shown in Figure 2. Data is written to
the RTC by writing to address locations 80h to 9Fh and is written to the RAM by writing to address
locations A0h to FFh. RTC data is read by reading address locations 00h to 1Fh and RAM data is read by
reading address locations 20h to 7Fh.
ADDRESS MAP
Figure 2
00H
1FH
20H
CLOCK/CALENDAR
READ ADDRESSES ONLY
96-BYTES USER RAM
7FH
80H
READ ADDRESSES ONLY
CLOCK/CALENDAR
9FH
A0H
WRITE ADDRESSES ONLY
96-BYTES USER RAM
FFH
WRITE ADDRESSES ONLY
CLOCK, CALENDAR AND ALARM
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, calendar and alarm are set or initialized by writing
the appropriate register bytes. Note that some bits are set to zero. These bits will always read 0
regardless of how they are written. Also note that registers 12h to 1Fh (read) and registers 92h to 9Fh are
reserved. These registers will always read 0 regardless of how they are written. The contents of the time,
calendar and alarm registers are in the binary-coded decimal (BCD) format.
Please note that the initial power on state of all registers in not defined. Therefore it is important to
enable the oscillator (EOSC = 0) and disable write protect (WP = 0) during initial configuration.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1305 | Serial Alarm Real Time Clock RTC |
| DS1305E | Serial Alarm Real Time Clock RTC |
| DS1305N | Serial Alarm Real Time Clock RTC |
| DS1306EN | Serial Alarm Real Time Clock RTC |
| DS1306 | Serial Alarm Real Time Clock RTC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1305EN/R | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Serial Alarm Real-Time Clock |
| DS1305EN/T | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Serial Alarm Real-Time Clock |
| DS1305EN/T&R | 制造商:Maxim Integrated Products 功能描述:SERIAL ALARM RTC 20P TSSOP IND T&R - Tape and Reel 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC RTC SERIAL ALARM IND 20-TSSOP 制造商:Maxim Integrated Products 功能描述:IC RTC YY-MM-DD 96 X 8 TSS 制造商:Maxim Integrated Products 功能描述:Real Time Clock Serial Alarm RTC 3-Wire |
| DS1305EN/T&R | 功能描述:實時時鐘 Serial Alarm RTC 3-Wire 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 |
| DS1305EN/TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Serial Alarm Real-Time Clock |
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