資料來源:https://www.seeedstudio.com/Grove---High-Precision-RTC-p-2741.html
According to the name, it is easy to know that the Grove – High Precision RTC is a more accurate real-time-clock comparing to Grove – RTC with the regular clock chip DS1307. The heart of Grove – High Precision RTC is PHILIPS PCF85063TP, which is a CMOS chip that optimized for low power consumption, the typical current can be less than 1.2uA at certain environment. All addresses and data are transferred serially via the two-line bidirectional I2C bus, of which the maximum speed is 400kbit/s. An offset register allows fine-tuning of the clock, and the register address is incremented automatically after each read or written data byte.
The Grove – High Precision RTC might one the most precise and low consumption RTC you can get so far, If your application requires high precision timing providing, please don’t hesitate to get one.
Features
Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal
Clock operating voltage: 0.9 V to 5.5 V
Low current: typical less than 1.2 μA at VDD = 3.3 V and Tamb = 25 °C
Up to 400 kHz two-line I²C-bus interface (at VDD = 1.8 V to 5.5 V)
Programmable clock output for peripheral devices (32.768 kHz, 16.384 kHz, 8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz)
Selectable integrated oscillator load capacitors for CL = 7 pF or CL = 12.5 pF
Minute and half minute interrupt
Internal Power-On Reset (POR)
Programmable offset register for frequency adjustment
Compatible platform:Arduino, BeagleBone Green, BeagleBone Green Wireless etc.
Dimensions | 140mm x 85mm x 10mm |
Weight | G.W 11g N.W 9.5g |
Battery | Exclude |
Grove - High Precision RTC | 1 |
Grove - cable | 1 |
據名字,很容易就知道林-高精度實時時鐘是一個更精確的實時時鐘比較格羅夫- RTC與普通時鐘芯片DS1307。樹叢的心臟-高精度的RTC是飛利浦PCF85063TP,這是一個CMOS芯片,對於低功耗進行了優化,典型電流可以小於1.2uA在一定的環境。所有地址和數據通過兩線雙向I2C總線,其中的最大速度為400kbit / s的串行傳輸。偏移寄存器允許時鐘的微調,並且寄存器地址是在每次讀或寫數據字節後自動遞增。
格羅夫-高精度RTC也許有最精確和低功耗RTC可以得到到目前為止,如果你的應用需要高精度定時的,請不要猶豫,得到一個。
特徵
提供的年,月,日,星期,小時,分鐘,以及基於32.768kHz的石英晶體秒
時鐘工作電壓:0.9 V至5.5 V
低電流:典型小於1.2μA在V DD = 3.3 V和T 磁懸浮 = 25°C
高達400 kHz的兩線I2C總線接口(在VDD = 1.8 V至5.5 V)
可編程時鐘輸出外圍設備(32.768千赫16.384千赫,8.192千赫,4.096千赫,2.048千赫,1.024 kHz和1赫茲)
對於C L可選集成振盪器負載電容= 7 pF或者C L = 12.5 pF的
分鐘和半分鐘中斷
內部上電復位(POR)
可編程的偏置寄存器調整頻率
兼容平台:Arduino的,BeagleBone綠,綠BeagleBone等無線
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