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參數(shù)資料
| 型號(hào)： | RF5C01A |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | XO, clock |
| 英文描述： | TRI N PLUG M PLAS 12-19 |
| 中文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO18 |
| 封裝： | SOP-18 |
| 文件頁(yè)數(shù)： | 7/10頁(yè) |
| 文件大?。?/td> | 124K |
| 代理商： | RF5C01A |
RP/RF5C01A
7
OSCILLATOR CIRCUIT
When the oscillator circuit is to be configured using crystal oscillators:
The oscillator circuit is configured as shown in Figure 1.
External components include: a resistor, a capacitor and a trimmer capacitor for fine tuning of the frequency.
Adjust the trimmer capacitor (16Hz or 1Hz signal output from the ALARM pin is used) to correct oscillation fre-
quency.
Correction with 16Hz signal:
Set addresses (A
3
, A
2
, A
1
, A
0
)=(1, 1, 1, 1).
Set Data (D
3
, D
2
, D
1
, D
0
)=(1, 0, 0,
′
).
Correction with 1Hz signal:
Set addresses (A
3
, A
2
, A
1
, A
0
)=(1, 1, 1, 1).
Set Data (D
3
, D
2
, D
1
, D
0
)=(0, 1, 0,
′
).
In each case, set addresses (A
3
, A
2
, A
1
, A
0
)=(1, 1, 0, 1), and set data (D
3
, D
2
, D
1
, D
0
)=(
′
, 0,
′
,
′
) to disable
ALARM output before setting 16Hz or 1Hz signal.
C
1
GND
C
2
OSCIN
OSCOUT
RP/RF5C01A
16
17
R
C
1
=5pF to 30pF
C
2
=30pF
R=100k
W
(Crystal from Nihon Denpa Kogyo : MX38T)
*
)
Values of C
1
, C
2
and R are not absolute conditions but are indicated for reference only. Regard those C
1
, C
2
and R values shown above as our
optimum values in our experiments which employed MX38T.
Difference between the RP5C01 and the RP/RF5C01A
Since the RP5C01 and the RP/RF5C01A have different oscillator circuit characteristics, approximately 12 to
19ppm (31 to 41 seconds/month) of difference will result if the RP/RF5C01A are used with an external value
that has been set to the RP5C01 oscillating characteristics. Therefore, determine a new external value for the
RP/RF5C01A.
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