參數(shù)資料
型號(hào)： S-3531AECA-TB-01
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： REAL TIME CLOCK, UUC8
封裝： DIE-8
文件頁(yè)數(shù)： 3/29頁(yè)
文件大?。?/td> 236K
代理商： S-3531AECA-TB-01
REAL-TIME CLOCK
S-3531A
10
Seiko Instruments Inc.
2-2. Status register
The status register is an eight-bit register which allows you to display and set various modes. The
POWER flag is read-only and others are read/write-enabled.
B7
LSB
POWER
12/24
R
R/W
INT1AE
INT1ME
MSB
B6
B5
B4
B3
B2
B1
B0
INT1FE
*
Figure 10 Status register
B7:POWER
This flag turns to "1" if the power voltage detecting circuit operates during
power-on or changes in power voltage (below VDET). Once turning to "1",
this flag does not turns back to "0" even when the power voltage reaches or
exceeds the detection voltage. When the flag is "1", you must send the
reset command (or the status register read command) and turn it to "0". It is
a read-only flag.
B6:12/24
This flag is used to set 12-hour or 24-hour expression.
0 : 12-hour expression
1 : 24-hour expression
B5:INT1AE
This flag is used to choose the state of INT1 pin output with alarm interrupt
output set. Enable this flag after setting alarm time that forms a meeting
condition in the INT1 register:
0 : Alarm interrupt output is disabled.
1 : Alarm interrupt output is enabled.
B3:INT1ME
This flag is used to make the output of the INT1 pin per-minute edge
interrupt or per-minute steady interrupt. To make the output per-minute
steady interrupt, set "1" at INT1ME and INT1FE .
0 : Alarm interrupt or selected frequency steady interrupt output
1 : Per-minute edge interrupt or per-minute steady interrupt output
B1:INT1FE
This flag is used to make the output of the INT1 pin per-minute steady
interrupt output (a period of one minute, 50% of duty) or selected frequency
steady interrupt. Note that the INT1 register is considered as the data of
frequency/duty if selected frequency steady interrupt is chosen.
0 : Alarm interrupt or per-minute edge interrupt output
1 : Per-minute steady interrupt or selected frequency steady
interrupt output
B4,B2,B0:
* Non-used bits; They are ignored during the data writing. Indefinite data
("0" or "1") is read during the data reading.
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