參數(shù)資料
型號(hào)： 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(yè)數(shù)： 22/24頁(yè)
文件大?。?/td> 301K
代理商： DS1678
DS1678
7 of 24
DS1678 EVENT ELAPSED TIME DURATION Figure 2b
Address
Register
0000
Event 1 Elapsed Time from Last Event Counter LSB
0001
Event 1 Elapsed Time from Last Event Counter MSB
0002
Event 2 Elapsed Time from Last Event Counter LSB
0003
Event 2 Elapsed Time from Last Event Counter MSB
0004
↓
07FB
↓
07FC
Event 1023 Elapsed Time from Last Event Counter LSB
07FD
Event 1023 Elapsed Time from Last Event Counter MSB
07FE
Event 1024 Elapsed Time from Last Event Counter LSB
07FF
Event 1024 Elapsed Time from Last Event Counter MSB
EVENT LOGGING
When the DS1678 event logging function is enabled, the device is said to be on an “event log mission”
until the event logging is stopped.
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 on both the falling and rising edges to allow for the measurement of on/off type events and
their duration’s. 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.
During an event log mission, every time the INT pin is activated, the elapsed time from the last event is
written to the event log memory pages. These memory pages are accessible through the data port in the
main memory. To access data via the Data Port, the LSB of the address location in the Event Log
Memory is written into 41h, the main memory address pointer will automatically increment to 42h where
the Event Log memory address MSB data will be written. The data from the Event Log Memory
location corresponding to the address written into main memory locations 41h and 42h will be available
in location 43h to be read. The Event Log data is located at addresses 0000h to 07FFh in the Event Log
Memory. The LSB of the first event duration is written to address location 0000h. . The MSB of the
first event duration is written to address location 0001h. The LSB of the second event is written to
address location 0002h. The MSB of the second event duration is written to address location 0003h (see
figure 2b for more details). Likewise, the address is incremented with each additional event duration.
A total of 2048 registers have been reserved for event log data which will allow 1024 events to be
logged.
A event log mission can be initiated via two different methods (See Figure 7); by a host writing a 1 to the
MIP bit of the Status register over the serial interface which automatically sets the Mission Enable bit in
the Control register to a 1 or by activating the INT input when the Mission Enable bit in the Control
Register is set to a one. The elapsed time between events recorded during an event log mission is equal to
the value written to the Event Logger Memory multiplied by one second, minute, or hour depending on
which one of the three is selected in the Duration Interval Select (DISx) bits of the Control Register.
Writing a 0 to the MIP bit in the Status register completes the mission and automatically writes a 0 to the
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(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
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(kāi)發(fā)系統(tǒng) >> 過(guò)時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)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(shí)時(shí)時(shí)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(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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