參數(shù)資料
型號(hào)： RV5C387A
廠商： RICOH COMPANY LTD
元件分類(lèi)： XO, clock
英文描述： I2C-bus Real-Time Clock ICs with Voltage Monitoring Function
中文描述： 0 TIMER(S), REAL TIME CLOCK, PDSO10
封裝： 4 X 2.90 MM, 1.20 MM HEIGHT, SSOP-10
文件頁(yè)數(shù)： 15/42頁(yè)
文件大小： 363K
代理商： RV5C387A
PRELIMINARY RV5C387A
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- 15 -
13.2.5.
Calendar Counter (Address 4-6h)
Day-of-month Counter (Address 4h)
D7
D6
-
-
0
0
0
0
D5
D20
D20
Indefinite
D4
D10
D10
Indefinite
D3
D8
D8
D2
D4
D4
D1
D2
D2
D0
D1
D1
(For Writing)
(For Reading)
Default Settings *)
Indefinite
Indefinite
Indefinite
Indefinite
Month Counter + Century Bit (Address 5h)
D7
D6
/19
20
-
/19
20
0
Indefinite
0
D5
-
0
0
D4
D3
MO8
MO8
Indefinite
D2
MO4
MO4
Indefinite
D1
MO2
MO2
Indefinite
D0
MO1
MO1
Indefinite
MO10
MO10
Indefinite
(For Writing)
(For Reading)
Default Settings *)
Year Counter (Address 6h)
D7
Y80
Y80
Indefinite
Indefinite
*) Default settings: Default value means read/written values when the XSTP bit is set to “1” due to power-on
from 0 volts or supply voltage drop.
* The calendar counters are configured to display the calendar digits in BCD format by using the automatic
calendar function as follows:
The day-of-month digits (D20 to D1) range from 1 to 31 for January, March, May, July, August, October, and
December; from 1 to 30 for April, June, September, and November; from 1 to 29 for February in leap years;
from 1 to 28 for February in ordinary years. The day-of-month digits are carried to the month digits in
reversion from the last day of the month to 1. The month digits (MO10 to MO1) range from 1 to 12 and are
carried to the year digits in reversion from 12 to 1.
The year digits (Y80 to Y1) range from 00 to 99 (00, 04, 08,
…
, 92, and 96 in leap years) and are carried to the
/19
20 digits in reversion from 99 to 00.
The /19
20 digits cycle between 0 and 1 in reversion from 99 to 00 in the year digits.
* Any carry from lower digits with the writing of non-existent calendar data may cause the calendar counters to
malfunction. Therefore, such incorrect writing should be replaced with the writing of existent calendar data.
D6
Y40
Y40
D5
Y20
Y20
Indefinite
D4
Y10
Y10
Indefinite
D3
Y8
Y8
D2
Y4
Y4
D1
Y2
Y2
D0
Y1
Y1
(For Writing)
(For Reading)
Default Settings *)
Indefinite
Indefinite
Indefinite
Indefinite
13.2.6.
Oscillation Adjustment Register (Address 7h)
D7
-
0
0
*) Default settings: Default value means read/written values when the XSTP bit is set to “1” due to power-on
from 0 volts or supply voltage drop.
D6
F6
F6
0
D5
F5
F5
0
D4
F4
F4
0
D3
F3
F3
0
D2
F2
F2
0
D1
F1
F1
0
D0
F0
F0
0
(For Writing)
(For Reading)
Default Settings *)
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