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參數(shù)資料
| 型號(hào)： | DS1682S |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Timer or RTC |
| 英文描述： | 0 TIMER(S), TIME RECORDER, PDSO8 |
| 封裝： | 0.150 INCH, SOP-8 |
| 文件頁數(shù)： | 11/14頁 |
| 文件大小： | 202K |
| 代理商： | DS1682S |
DS1682 Total-Elapsed-Time Recorder with Alarm
6 of 14
EVENT LOGGING
When the DS1682 is powered up, the event time and count values recorded in the EEPROM are
transferred to the ETC and event counter, and the device waits for an event. When an event triggers the
input by transitioning the EVENT pin from a low to a high level, the following occurs:
1) The RC oscillator starts.
2) The alarm, ETC, and event counter are transferred from EEPROM to RAM.
3) Note: Reading the RAM during the transfer results in invalid data.
4) After tES, the ETC increments. An event greater than tG but less than tES increments the event counter
but not the ETC (zero-length event).
5) The ETC increments every TEI. The ETC holds time in quarter-second resolution.
6) When the EVENT pin goes low, the event counter increments, the oscillator stops, and the ETC and
event counter are transferred to EEPROM. The 2-wire bus is not available for tEW.
The ETC stops counting and does not roll over once FFFFFFFFh, or approximately 34 years, is reached.
See Figure 5 for timing.
Figure 5. Event Input Timing
DEVICE SETUP
Once installed in a system, the DS1682 can be programmed to record events as required by the
application, and can be tested by generating events and monitoring the results. Afterwards, it can be
“l(fā)ocked” to prevent alteration of the event and alarm registers and the alarm condition.
The following is a typical sequence:
1) Write the configuration register, alarm registers, and user memory to the desired values.
2) Write-protect the alarm, ETC, and event counter registers with the write disable command if needed.
3) Write-protect the user memory with the write-memory-disable command, if needed.
4) Issue a reset (described in the Reset Command section).
The alarm, ETC and event counter registers, and user memory, once locked, cannot be changed.
Upon reset, the ETC and event counter registers are cleared. The device clears the RE bit, and the
configuration register becomes read-only. Additional resets are ignored.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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(chǔ)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/TR | 制造商:Maxim Integrated Products 功能描述: |
| 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(chǔ)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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