參數(shù)資料
型號(hào): R2025S
廠商: RICOH COMPANY LTD
元件分類(lèi): XO, clock
英文描述: High precision I2C-Bus Real-Time Clock Module
中文描述: REAL TIME CLOCK, PDSO14
封裝: 10.10 X 7.40 MM, 3.10 MM HEIGHT, SOP-14
文件頁(yè)數(shù): 30/47頁(yè)
文件大小: 524K
代理商: R2025S
R2025S/D
error as follows:
(1) Output a 1Hz clock pulse of Pulse Mode with interrupt pin
Set (0,0,x,x,0,0,1,1) to Control Register 1 at address Eh.
(2) After setting the oscillation adjustment register, 1Hz clock period changes every 20seconds ( or every 60
seconds) like next page figure.
30
1Hz clock pulse
T0
T0
T0
T1
1 time
19 times
Measure the interval of T0 and T1 with frequency counter. A frequency counter with 7 or more digits is
recommended for the measurement.
(3) Calculate the typical period from T0 and T1
T = (19
×
T0+1
×
T1)/20
Calculate the time error from T.
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