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DS1305
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3-WIRE INTERFACE
The 3-wire interface mode operates similarly to the SPI mode. However, in 3-wire mode there is one I/O
instead of separate data in and data out signals. The 3-wire interface consists of the I/O (SDI and SDO
pins tied together), CE, and SCLK pins. In 3-wire mode, each byte is shifted in LSB first unlike SPI mode
where each byte is shifted in MSB first.
As is the case with the SPI mode, an address byte is written to the device followed by a single data byte
or multiple data bytes. Figure 9 illustrates a read and write cycle. In 3-wire mode, data is input on the
rising edge of SCLK and output on the falling edge of SCLK.
Figure 9. 3-WIRE SINGLE-BYTE TRANSFER
NOTE: IN BURST MODE, CE IS KEPT HIGH AND ADDITIONAL SCLK CYCLES ARE SENT UNTIL THE END OF THE BURST.
*
I/O IS SDI AND SDO TIED TOGETHER.
A0
A1
A2
A3
A4
A5
A6
1
CE
SCLK
I/O*
D0
D1
D2
D3
D4
D5
D6 D7
SINGLE-BYTE WRITE
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4
A5 A6
0
I/O*
CE
SCLK
SINGLE-BYTE READ
SERMODE = GND
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相关代理商/技术参数
DS1305E/TR 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Serial Alarm Real-Time Clock
DS1305E+ 功能描述:实时时钟 Serial Alarm RTC 3-Wire RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube
DS1305E+R 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Serial Alarm Real-Time Clock
DS1305E+T 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Serial Alarm Real-Time Clock
DS1305E+T&R 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 96BYTE 20TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:SERIAL ALARMRTC 20PTSSOPT&R LFREE 制造商:Maxim Integrated Products 功能描述:IC RTC SERIAL ALARM 20-TSSOP 制造商:Maxim Integrated Products 功能描述:Real Time Clock Serial Alarm RTC 3-Wire
DS1305E+T&R 功能描述:实时时钟 Serial Alarm RTC 3-Wire RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube
DS1305E+TR 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Serial Alarm Real-Time Clock
DS1305EN 功能描述:实时时钟 Serial Alarm RTC 3-Wire RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube