s-35392a Seiko Instruments Inc., s-35392a Datasheet - Page 22

• Manufacturer Part Number: s-35392a
• Description: 2-wire Real-time Clock
• Manufacturer: Seiko Instruments Inc.

22
INT1AE/INT2AE
2-WIRE REAL-TIME CLOCK
S-35392A
Real-time data
*1. If users clear INT2AE once; “L” is not output from the
*2. If turning the alarm output on by changing the program, within the period when the alarm time matches real-time data,
2. Output of user-set frequency
Alarm setting of “H (hour)”
The output of user-set frequency is the function to output the frequency which is selected by using data, from the
pin, in the AND-form. Set up the data of frequency in the INT2 register.
Refer to “4. INT1 register and INT2 register” in “ Configuration of Register”
INT1 flag/
INT2 flag
“L” is output again from the
the alarm time matches real-time data.
INT2 pin
Status register 2 setting
• INT2 pin output mode
INT2 pin
INT2FE
INT2AE = Don’t care (0 or 1), INT2ME = 0
Status register 2 setting
• Alarm 1 function
• Alarm 2 interrupt
INT1ME = INT1FE = 0
INT2ME = INT2FE = 0
Change by program
(H − 1) h 59 m 59 s
Alarm time matches
Alarm time matches
Free-run output starts
Second
INT
Figure 24 Output Timing of User-set Frequency
Figure 23 Alarm Interrupt Output Timing (2/2)
2
H h 00 m 00 s
Real-time data
Change by program
Minute
pin when the minute is counted up.
mx
INT1 register
INT2 register
OFF
Status register 1 reading
Hour
Hx
Seiko Instruments Inc.
01 s
the week
Day of
Comparator
Period when alarm time matches
Wx
INT
Day Month
Change by program
Dx
*1
2
INTx register alarm enable flag
• AxmE = AxWE = "0", AxHE = "1"
59 s
pin by setting INT2AE enable again, within a period when
Mx
H h 01 m 00 s
Year
Yx
Alarm time
matches
Change by program
Status register 1 reading
*2
Alarm 1 output
(B3 in status register 1)
Alarm 2 interrupt (INT2 pin)/
alarm 2 output
(B2 in status register 1)
OFF
Change by program
OFF
H h 59 m 59 s
*1
(H + 1) h 00 m 00 s
Rev.1.3
_00
INT
2