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參數(shù)資料
| 型號： | DS1315EN-33 |
| 英文描述： | Phantom Time Chip |
| 中文描述： | 幻影時鐘芯片 |
| 文件頁數(shù)： | 3/21頁 |
| 文件大?。?/td> | 523K |
| 代理商： | DS1315EN-33 |
DS1315
3 of 21
TIMING BLOCK DIAGRAM
Figure 1
Communication with the Time Chip is established by pattern recognition of a serial bit stream of 64 bits
which must be matched by executing 64 consecutive write cycles containing the proper data on data in
(D). All accesses which occur prior to recognition of the 64-bit pattern are directed to memory via the
chip enable output pin (
CEO
).
After recognition is established, the next 64 read or write cycles either extract or update data in the Time
Chip and
CEO
remains high during this time, disabling the connected memory.
Data transfer to and from the timekeeping function is accomplished with a serial bit stream under control
of chip enable input (
CEI
), output enable (
OE
), and write enable (
WE
). Initially, a read cycle using the
CEI
and
OE
control of the Time Chip starts the pattern recognition sequence by moving pointer to the
first bit of the 64-bit comparison register. Next, 64 consecutive write cycles are executed using the
CEI
and
WE
control of the Time Chip. These 64 write cycles are used only to gain access to the Time Chip.
When the first write cycle is executed, it is compared to bit 1 of the 64-bit comparison register. If a match
is found, the pointer increments to the next location of the comparison register and awaits the next write
cycle. If a match is not found, the pointer does not advance and all subsequent write cycles are ignored. If
a read cycle occurs at any time during pattern recognition, the present sequence is aborted and the
comparison register pointer is reset. Pattern recognition continues for a total of 64 write cycles as
described above until all the bits in the comparison register have been matched. (This bit pattern is shown
in Figure 2). With a correct match for 64 bits, the Time Chip is enabled and data transfer to or from the
timekeeping registers may proceed. The next 64 cycles will cause the Time Chip to either receive data on
D, or transmit data on Q, depending on the level of
OE
pin or the
WE
pin. Cycles to other locations
相關PDF資料 |
PDF描述 |
|---|---|
| DS1315EN-5 | Phantom Time Chip |
| DS1318 | Parallel-Interface Elapsed Time Counter |
| DS1321 | Flexible Nonvolatile Controller with Lithium Battery Monitor |
| DS1330AB | 256k Nonvolatile SRAM with Battery Monitor |
| DS1330YP-100-IND | Isolation Transformer |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS1315EN-33/R | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Phantom Time Chip |
| DS1315EN-33/T | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Phantom Time Chip |
| DS1315EN-33/T&R | 制造商:Maxim Integrated Products 功能描述:MAXIM DS1315EN-33/T&R REAL TIME CLOCKS (RTC) - Tape and Reel 制造商:Maxim Integrated Products 功能描述:Maxim DS1315EN-33/T&R Real Time Clocks (RTC) 制造商:Maxim Integrated Products 功能描述:IC T-CHP PHANTOM 3.3V IN 20TSSOP |
| DS1315EN-33/T&R | 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 |
| DS1315EN-33+ | 功能描述:實時時鐘 Phantom Time Chip 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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