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參數(shù)資料
| 型號： | DS1678 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDIP8 |
| 封裝： | 0.300 INCH, DIP-8 |
| 文件頁數(shù)： | 5/24頁 |
| 文件大?。?/td> | 301K |
| 代理商： | DS1678 |
DS1678
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memory address locations 0000h and 0001h, overwriting the original data. Likewise, subsequent samples
will increment through the event log registers, overwriting their data.
The Event 0 Elapsed Time From Last Event bytes will have the elapsed time since the last event in the
Event Log Memory. This is to allow the user to recover the information prior to the rollover. At the start
of a mission, the value in these two bytes will be all zeros since there was no previous event to have an
elapsed time from.
If RO is set to a 0, no further event logs will be written to the event log memory after all event log
memory registers have been filled. Events, however, will continue to be recognized and the Event Count
register will be incremented for each event. Likewise, the RTC alarm flag will also continue to function.
TR1, TR0 - Trigger Select [1,0] - This bit selects the edge(s) that will activate the INT pin to cause an
event to be logged. An event can be triggered one of three ways depending on the settings of the Trigger
Select (TRx) bits in the Control register. With TR0 bit set to a 1 and TR1 bit set to a 0, the INT signal
will be activated on the falling edge of the input signal. With the TR0 bit set to a 0 and the TR1 bit set to
a 1, the INT pin will be activated on the rising edge of the input signal.
With both TR0 and TR1 bits set to 1, the INT pin will be activated by both the rising and falling edges to
allow for the measurement of on/off type events and their durations. If TR0 and TR1 are both set to 0,
nothing will happen when the INT pin is toggled and a mission will not start. This is an illegal state and
the mission will not start without a valid value in the TRx bits prior to attempting to start the mission.
TRIGGER SELECT BITS, Table 3
TR1
TR0
Edge(s) Used to Trigger an Event
0
Nothing, Illegal State
0
1
Falling Edge
1
0
Rising Edge
1
Both Rising and Falling Edges
COE - Clock Oscillator Enable - This bit allows the clock oscillator to be shut off to save power. The
RTC will no longer keep time when the oscillator is shut off, but the information stored in the device
memory will be maintained. An event log mission can not start with COE set to zero and the RTC must
be reset to the correct value after the oscillator is restarted and prior to starting a mission in order to
obtain good data. A clear memory can also not be executed without the oscillator running. When
VCC>VBAT, The oscillator will automatically start, no matter what the value in the COE bit to allow
proper communications. This is a way to preserve the data longer in battery mode once a mission has
been completed in order to increase the battery life and thus the data integrity lifetime.
STATUS REGISTER
MSB
LSB
0MEM CLR
MIP
CM
LOBAT
ROF
0
ALMF
MEM CLR - Memory Cleared - This bit indicates that the event log memory, Event Count, and Start
Time Stamp registers are all cleared to zero. MEM CLR is cleared to 0 when an event log mission is
started (i.e., MIP = 1).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1682S | 0 TIMER(S), TIME RECORDER, PDSO8 |
| DS1682 | 0 TIMER(S), TIME RECORDER, PDSO8 |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1678+ | 功能描述:實時時鐘 Real-Time Event Recorder 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1678J | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2-Input Digital Multiplexer |
| DS1678J/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2-Input Digital Multiplexer |
| DS1678K | 功能描述:KIT EVAL RT EVENT RECORD DS1678 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產(chǎn)零件編號 系列:- 標準包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| DS1678S | 功能描述:實時時鐘 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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