S-35390A Seiko Instruments, S-35390A Datasheet - Page 19

• Manufacturer Part Number: S-35390A
• Description: 2-Wire Real Time Clock
• Manufacturer: Seiko Instruments

32kE = 0, INT1ME = INT1FE = 0
(INT1 pin output mode)
INT2ME = INT2FE = 0
(INT2 pin output mode)
Alarm enable flag
In case of AxWE = AxHE = AxmE = “1”
Second
Rev.1.2
Interrupts
The INT1 pin output mode is selected by the INT1AE, INT1ME, and INT1FE flags of status register_2.
(1) Alarm interrupt output
Similarly, the INT2 pin output mode is selected by the INT2AE, INT2ME, and INT2FE flags of status
register_2.
When the INT1 (or INT2) pin output mode is set as the alarm setting using status register_2 and the
day of week, hour, and minute data is set in INT1 register_1 (or INT1 register_2), low is output from the
register_2 to “0” (or INT2AE to “0”) using serial communication to set the output to high (OFF state).
Minute
INT (or
_00
INT1 register_1 / INT1 register_2
Comparator
mx Hx Wx
Real time data
1
Hour
INT ) pin when the set hour is reached. Since the output is held, rewrite INT1AE of status
2
Week
Alarm interrupt
INT1 pin / INT2 pin
Day
INT1AE / INT2AE
Real time data
Month
Seiko Instruments Inc.
Year
Change by the program
H h (m − 1) m 59 s
Second
Alarm time match
32kE = 0, INT1ME = INT1FE = 0
(INT1 pin output mode)
INT2ME = INT2FE = 0
(INT2 pin output mode)
Alarm enable flag
In case of AxWE = “0”, AxHE = AxmE = “1”
INT1 register_1 / INT1 register_2
mx Hx Wx
Minute
Comparator
Real time data
H h 00m 00 s
Hour
Change by the program
2-WIRE REAL-TIME CLOCK
OFF
Alarm time match period
Week
When set “H” Hour “m” minute
Alarm interrupt
01 s
Day
Change by the program
*1
59 s
Month
S-35390A
H h (m + 1) m 00 s
Year
19