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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)： | 10/22頁 |
| 文件大?。?/td> | 257K |
| 代理商： | DS1305EN |
DS1305
10 of 22
SERIAL PERIPHERAL INTERFACE (SPI)
The serial peripheral interface (SPI) is a synchronous bus for address and data transfer and is used when
interfacing with the SPI bus on specific Motorola microcontrollers such as the 68HC05C4 and the
68HC11A8. The SPI mode of serial communication is selected by tying the SERMODE pin to V
CC
.
Four pins are used for the SPI. The four pins are the SDO (Serial Data Out), SDI (Serial Data In), CE
(Chip Enable) and SCLK (Serial Clock). The DS1305 is the slave device in an SPI application, with the
microcontroller being the master.
The SDI and SDO pins are the serial data input and output pins for the DS1305, respectively. The CE
input is used to initiate and terminate a data transfer. The SCLK pin is used to synchronize data
movement between the master (microcontroller) and the slave (DS1305) devices.
The shift clock (SCLK), which is generated by the microcontroller, is active only during address and data
transfer to any device on the SPI bus. The inactive clock polarity is programmable in some
microcontrollers. The DS1305 offers an important feature in that the level of the inactive clock is
determined by sampling SCLK when CE becomes active. Therefore either SCLK polarity can be
accommodated. Input data (SDI) is latched on the internal strobe edge and output data (SDO) is shifted
out on the shift edge (see Table 3 and Figure 6). There is one clock for each bit transferred. Address and
data bits are transferred in groups of eight.
POWER SUPPLY CONFIGURATIONS FOR THE DS1305
Figure 5
Configuration 1: Backup Supply is a Non-Rechargeable Lithium Battery
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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