參數(shù)資料
型號： RV5C387A-E2
廠商： RICOH COMPANY LTD
元件分類： 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
文件頁數(shù)： 14/42頁
文件大?。?/td> 363K
代理商： RV5C387A-E2
RV5C387A PRELIMINARY
12345
- 14 -
13.2.3.
Time Counter (Address 0-2h)
Second Counter (Address 0h)
D7
D6
-
S40
0
S40
0
Indefinite
D5
S20
S20
Indefinite
D4
S10
S10
Indefinite
D3
S8
S8
D2
S4
S4
D1
S2
S2
D0
S1
S1
(For Writing)
(For Reading)
Default Settings *)
Indefinite
Indefinite
Indefinite
Indefinite
Minute Counter (Address 1h)
D7
D6
-
M40
0
M40
0
Indefinite
D5
M20
M20
Indefinite
D4
M10
M10
Indefinite
D3
M8
M8
D2
M4
M4
D1
M2
M2
D0
M1
M1
(For Writing)
(For Reading)
Default Settings *)
Indefinite
Indefinite
Indefinite
Indefinite
Hour Counter (Address 2h)
D7
D6
-
D5
P
/A
or H20
P
/A
or H20
Indefinite
D4
H10
D3
H8
D2
H4
D1
H2
D0
H1
-
(For Writing)
0
0
H10
H8
H4
H2
H1
(For Reading)
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.
*
Time digit display (BCD format) as follows:
The second digits range from 00 to 59 and are carried to the minute digit in transition from 59 to 00.
The minute digits range from 00 to 59 and are carried to the hour digits in transition from 59 to 00.
The hour digits range as shown in "13.2.1. – (2). /12
24: 12-/24-hour Mode Selection Bit" and are carried to
the day-of-month and day-of-week digits in transition from PM11 to AM12 or from 23 to 00.
*
Any writing to the second counter resets divider units of less than 1 second.
*
Any carry from lower digits with the writing of non-existent time may cause the time counters to malfunction.
Therefore, such incorrect writing should be replaced with the writing of existent time data.
Day-of-week Counter (Address 3h)
0
Indefinite
Indefinite
Indefinite
Indefinite
Indefinite
Default Settings *)
13.2.4.
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.
The day-of-week counter is incremented by 1 when the day-of-week digits are carried to the day-of-
month digits.
* Day-of-week display (incremented in septimal notation):
(W4, W2, W1) = (0, 0, 0)
→
(0, 0, 1)
→
…
→
(1, 1, 0)
→
(0, 0, 0)
* Correspondences between days of the week and the day-of-week digits are user-definable
(e.g. Sunday = 0, 0, 0)
The writing of (1, 1, 1) to (W4, W2, W1) is prohibited except when days of the week are unused.
D6
-
0
0
D5
-
0
0
D4
-
0
0
D3
-
0
0
D2
W4
W4
Indefinite
D1
W2
W2
Indefinite
D0
W1
W1
Indefinite
(For Writing)
(For Reading)
Default Settings *)
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