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參數(shù)資料
| 型號： | DS1682 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Timer or RTC |
| 英文描述： | 0 TIMER(S), TIME RECORDER, PDSO8 |
| 封裝： | MICRO, SOP-8 |
| 文件頁數(shù)： | 12/13頁 |
| 文件大?。?/td> | 77K |
| 代理商： | DS1682 |
DS1682
8 of 13
will be able to be written. Once written twice to AAh, the Write Disable to set the Write Disable flag to a
1, it will not be able to be reset and the Configuration register, Total Time Accumulate register, Event
Counter, and Alarm Trip Point register will become Read-Only. The User memory is not affected by the
Write Disable register.
GLITCH CONTROL CIRCUIT
The DS1682 has a built in glitch control circuit to prevent input noise on the EVENT pin from triggering
false events or corrupting the data.
USER MEMORY
There are 10 bytes of user programmable, EEPROM memory. Once the Write Memory Disable Flag is
set to a one, the memory can not be erased or written to again. This is good for locating serial numbers,
manufacture dates, warrantee information, or other important information.
With the Write Memory
Disable Flag set to a 0, the user memory is readable, writable and erasable.
SERIAL INTERFACE
The DS1682 provides two-wire serial communications.
2-WIRE SERIAL DATA BUS
The DS1682 supports a bi-directional two-wire bus and data transmission protocol. A device that sends
data onto the bus is defined as a transmitter, and a device receiving data as a receiver. The device that
controls the message is called a “master”. The devices that are controlled by the master are “slaves”. The
bus must be controlled by a master device which generates the serial clock (SCL), controls the bus access,
and generates the START and STOP conditions. The DS1682 operates as a slave on the two-wire bus.
Connections to the bus are made via the open-drain I/O lines SDA and SCL.
The following bus protocol has been defined (See Figure 2):
Data transfer may be initiated only when the bus is not busy.
During data transfer, the data line must remain stable whenever the clock line is HIGH. Changes in
the data line while the clock line is high will be interpreted as control signals.
Accordingly, the following bus conditions have been defined:
Bus not busy: Both data and clock lines remain HIGH.
Start data transfer: A change in the state of the data line, from HIGH to LOW, while the clock is HIGH,
defines a START condition.
Stop data transfer: A change in the state of the data line, from LOW to HIGH, while the clock line is
HIGH, defines the STOP condition.
Data valid: The state of the data line represents valid data when, after a START condition, the data line is
stable for the duration of the HIGH period of the clock signal. The data on the line must be changed
during the LOW period of the clock signal. There is one clock pulse per bit of data.
Each data transfer is initiated with a START condition and terminated with a STOP condition. The
number of data bytes transferred between START and STOP conditions is not limited, and is determined
by the master device. The information is transferred byte-wise and each receiver acknowledges with a
ninth bit. Within the bus specifications a regular mode (100 kHz clock rate) and a fast mode (400 kHz
clock rate) are defined. The DS1682 only supports the standard mode of operations.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1685-3 | 1 TIMER(S), REAL TIME CLOCK, PDIP24 |
| DS1687-5 | 1 TIMER(S), REAL TIME CLOCK, PDIP24 |
| DS1685Q-3 | 1 TIMER(S), REAL TIME CLOCK, PQCC28 |
| DS1685S-3 | 1 TIMER(S), REAL TIME CLOCK, PDSO24 |
| DS1685E-5 | 1 TIMER(S), REAL TIME CLOCK, PDSO24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1682_13 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Total-Elapsed-Time Recorder with Alarm |
| DS1682S | 功能描述:實(shí)時(shí)時(shí)鐘 Total-Elapsed-Time Recorder w/Alarm 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(shí)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 |
| DS1682S/GG8 | 制造商:Maxim Integrated Products 功能描述: |
| DS1682S/T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 10BYTE 8SOIC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC TIMEKEEPER ALARM ELAPSE 8SOIC |
| DS1682S/T&R | 功能描述:實(shí)時(shí)時(shí)鐘 Total-Elapsed-Time Recorder w/Alarm 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(shí)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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