參數資料
型號: S-35392A-I8T1U
元件分類: 時鐘/數據恢復及定時提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO8
封裝: HALOGEN FREE AND LEAD FREE, SNT-8
文件頁數: 17/47頁
文件大?。?/td> 419K
代理商: S-35392A-I8T1U
2-WIRE REAL-TIME CLOCK
S-35392A
Rev.2.0_00
Seiko Instruments Inc.
24
Function to Clock-Correction
The function to clock-correction is to correct advance/delay of the clock due to the deviation of oscillation frequency, in
order to make a high precise clock. For correction, the S-35392A adjusts the clock pulse by using a certain part of the
dividing circuit, not adjusting the frequency of the crystal oscillator. Correction is performed once every 20 seconds (or 60
seconds). The minimum resolution is approx. 3 ppm (or approx. 1 ppm) and the S-35392A corrects in the range of
195.3
to +192.2 ppm (or of
65.1 to +64.1 ppm). (Refer to Table 12.) Users can set up this function by using the
clock-correction register. Regarding how to calculate the setting data, refer to “1. How to calculate”. When not using this
function, be sure to set “00h”.
Table 12
Function to Clock-Correction
B0 = 0
B0 = 1
Correction
Every 20 seconds
Every 60 seconds
Minimum resolution
3.052 ppm
1.017 ppm
Correction range
195.3 to +192.2 ppm
65.1 to +64.1 ppm
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