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參數(shù)資料
| 型號(hào)： | DS1678S+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 11/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC REAL TIME EVENT REC 8-SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 88 |
| 類型： | 時(shí)間事件記錄器 |
| 特點(diǎn)： | 警報(bào)器，閏年，NVSRAM，Y2K |
| 存儲(chǔ)容量： | 32B |
| 時(shí)間格式： | HH:MM:SS（12/24 小時(shí)） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | I²C，2 線串口 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 電壓 - 電源，電池： | 2.6 V ~ 3.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SO |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1434 (CN2011-ZH PDF) |
DS1678 Real-Time Event Recorder
19 of 25
Bit 3: Rollover (RO). This bit determines whether the data log function of the DS1678 rolls over or stops
writing data to the event-log memory if the event-log memory is completely filled. If RO is set to one, the
event-log memory rolls over after all 2048 bytes in the event-log memory have been used. After the
1024th event recorded in the event-log memory, the following sample has the full time/date stamp
information written to the Start Time Stamp register and the contents of the ETC written to the two bytes
following the start time stamp (Event 0 Rollover Stamp). The next sample has the duration of time from
the new start time stamp value written to event-log memory address locations 0000h and 0001h,
overwriting the original data. Likewise, subsequent samples increment through the event-log registers,
overwriting their data.
The Event 0 Rollover Stamp has 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 is zero since there was no previous event from which to have an elapsed time.
If RO is set to zero, no further event logs are written to the event-log memory after all event-log memory
registers have been filled. However, events continue to be recognized, and the Event Counter Register is
incremented for each event.
Bits 2 and 1: Trigger Sel ect 0 and 1 (TR1 and TR0). These bits select the edge(s) that activate INT to
cause an event to be logged. An event can be triggered one of three ways, depending on the settings of the
TRx bits in the Control Register. With TR0 set to one and TR1 set to zero,
INT is activated on the falling
edge of the input signal. With TR0 set to zero and TR1 set to one, the
INT is activated on the rising edge
of the input signal.
With TR0 and TR1 set to zero,
INT is activated by the rising and falling edges to allow for the
measurement and duration of on/off type events. If TR0 and TR1 are set to zero, nothing happens when
INT is toggled, and a mission does not start. This is an illegal state, and the mission does not start without
a valid value in the TRx bits prior to attempting to start the mission.
Table 6. Trigger Select Bits
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
Bit 0: Enable Oscillator (EOSC). This bit allows the clock oscillator to shut off to save power. The RTC
no longer keeps time when the oscillator is shut off, but the information stored in the device memory is
maintained. An event-log mission cannot start with EOSC set to zero, and the RTC must be reset to the
correct value after the oscillator is restarted and prior to starting a mission to obtain good data. A clear
memory also cannot be executed without the oscillator running. When VCC > VBAT, the oscillator
automatically starts, no matter what the value in the EOSC bit, to allow proper communications.
Disabling the oscillator with EOSC can be used to extend the battery life whenever time and date
operation on battery backup is not required.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1678S/T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 32BYTE 8SOIC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RECORDER REALTIME EVENT 8SOIC |
| DS1678S/T&R | 功能描述:IC RECORDER REALTIME EVENT 8SOIC RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 實(shí)時(shí)時(shí)鐘 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:時(shí)鐘/日歷 特點(diǎn):警報(bào)器，閏年，SRAM 存儲(chǔ)容量:- 時(shí)間格式:HH:MM:SS（12/24 小時(shí)） 數(shù)據(jù)格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源，電池:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-TDFN EP 包裝:管件 |
| DS1678S+ | 功能描述:實(shí)時(shí)時(shí)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(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 |
| DS1678S+T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 32BYTE 8SOIC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC REAL TIME EVENT REC 8-SOIC 制造商:Maxim Integrated Products 功能描述:Real Time Clock Real-Time Event Recorder |
| DS1678S+T&R | 功能描述:實(shí)時(shí)時(shí)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(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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