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參數(shù)資料
| 型號： | S-3531A |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | CMOS Real-Time Clock IC Supporting an IIC-Bus(支持IIC-BUS的CMOS實時時鐘芯片) |
| 中文描述： | CMOS實時時鐘IC支持一個IIC總線（支持IIC總線的實時時鐘芯片的CMOS） |
| 文件頁數(shù)： | 11/31頁 |
| 文件大?。?/td> | 185K |
| 代理商： | S-3531A |
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REAL-TIME CLOCK
S-3531A
10
Seiko Instruments Inc.
2-3. Alarm time/Frequency duty setting register
(1) When INT1AE = 1
INT1 register is considered as alarm time data. Having the same configuration as the time and minutes
registers of real-time register configuration, they represent hours and minutes with BCD codes. When setting
them, do not set any none-existent day. Data to be set must be in accordance with 12-hour or 24-hour
expression that is set at the status register.
(2) When INT1FE = 1
There are two types of alarm time/frequency duty setting registers, sixteen-bit registers, which
set alarm time or frequency duty. They are switched by INT1AE or INT1FE register. AM/PM flag
to be set must be in accordance with 12-hour or 24-hour expression. If AM/PM flag is not
rightly then set hour data is not met to alarm data. The alarm time/frequency duty setting
register is a write-only register.
AM/
PM
0
H8
H4
H2
H1
MSB
LSB
INT1 register
0
m8
m4
m2
m1
MSB
LSB
H20 H10
Figure 11 INT1 register (alarm)
m10
m20
m40
INT1 register is considered as frequency duty data. By turning each bit of the registers to "1," a frequency
corresponding to each bit is chosen in an ANDed form.
f0
MSB
LSB
INT1 register
MSB
LSB
f1
f2
f3
f4
f5
f6
f7
f8
f9
f10
f11
f12
f13
f14
f15
f0
f1
32768 Hz
f2
f3
f4
f5
f6
f7
f8
f9
f10
f11
f12
f13
f14
f15
16384 Hz
8192 Hz
4096 Hz
2048 Hz
1024 Hz
512 Hz
256 Hz
128 Hz
8 Hz
4 Hz
2 Hz
1 Hz
64 Hz
32 Hz
16 Hz
Figure 12 INT1 register (frequency duty)
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