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參數(shù)資料
| 型號： | R2043K |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | 4-wire Serial Interface |
| 中文描述： | 4線串行接口 |
| 文件頁數(shù)： | 18/48頁 |
| 文件大?。?/td> | 458K |
| 代理商： | R2043K |
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R2043K/T
* The Oscillation Adjustment Circuit will not operate with the same timing (00, 20, or 40 seconds)
as the timing of writing to the Oscillation Adjustment Register.
* The F6 bit setting of 0 causes an increment of time counts by ((F5, F4, F3, F2, F1, F0) - 1) x 2.
The F6 bit setting of 1 causes a decrement of time counts by ((/F5, /F4, /F3, /F2, /F1, /F0) + 1) x 2.
The settings of "*, 0, 0, 0, 0, 0, *" ("*" representing either "0" or "1") in the F6, F5, F4, F3, F2, F1, and
F0
bits cause neither an increment nor decrement of time counts.
Example:
If (DEV, F6, F5, F4, F3, F2, F1, F0) is set to (0, 0, 0, 0, 0, 1, 1, 1), when the second digits read 00, 20,
or 40, an increment of the current time counts of 32768 + (7 - 1) x 2 to 32780 (a current time count
loss).
If (DEV, F6, F5, F4, F3, F2, F1, F0) is set to (0, 0, 0, 0, 0, 0, 0, 1), when the second digits read 00, 20,
40, neither an increment nor a decrement of the current time counts of 32768.
If (DEV, F6, F5, F4, F3, F2, F1, F0) is set to (1, 1, 1, 1, 1, 1, 1, 0), when the second digits read 00, a
decrement of the current time counts of 32768 + (- 2) x 2 to 32764 (a current time count gain).
An increase of two clock pulses once per 20 seconds causes a time count loss of approximately 3
ppm (2 / (32768 x 20 = 3.051 ppm). Conversely, a decrease of two clock pulses once per 20
seconds causes a time count gain of 3 ppm. Consequently, when DEV is set to “0”, deviations in
time counts can be corrected with a precision of
±
1.5 ppm. In the same way, when DEV is set to “1”,
deviations in time counts can be corrected with a precision of
±
0.5 ppm. Note that the oscillation
adjustment circuit is configured to correct deviations in time counts and not the oscillation frequency
of the 32.768-kHz clock pulses. For further details, see "P31
O
Oscillation Adjustment Circuit".
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Rev.2.06 - 18 -
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相關(guān)代理商/技術(shù)參數(shù) |
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| R2043K-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:4-wire Serial Interface |
| R2043T | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:4-wire Serial Interface |
| R2043T-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:4-wire Serial Interface |
| R20440 | 制造商:Microsemi Corporation 功能描述:STD RECOVERY RECTFR 400V 12A 2PIN DO-4 - Bulk |
| R2045D | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:4-wire Serial Interface Real Time Clock Module |
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