S-35192A Datasheet, PDF (21/41 Pages) Seiko Instruments Inc – 3-WIRE REAL-TIME CLOCK

Rev.1.2_00
3-WIRE REAL-TIME CLOCK
S-35192A
„ Alarm Function
By this alarm function, the INT1 flag or the INT2 flag (B2 or B3 in the status register1) is set to “H” when the time that
users set has come.
Set up the data of day of the week, hour and minute as alarm time in the INT register 1/2. Refer to “4. INT register 1 and
INT register 2” in “„ Configuration of Register”.
Alarm setting of “W (day of the week), H (hour), m (minute)”
Status register 2 setting
• Alarm 1 function
INT1ME = INT1FE = 0
• Alarm 2 function
None
INT register x alarm enable flag
• AxHE = AxmE = AxWE = “1”
INT register 1
INT register 2
mx Hx Wx
Comparator
SSeeccoonndd MMiinnuuttee HHoouurr ^{Day of} Day Month Year
the week
Real-time data
Alarm output to INT1 flag/INT2 flag
(B3 or B2 in status register 1)
Real-time data
INT1AE/INT2AE
INT1 flag/INT2 flag
W (day of the week)
H h (m − 1) m 59 s
Change by program
H h m m 00 s 01 s
Change by program
59 s H h (m + 1) m 00
Change by program
Alarm time matches
Read status register 1
Period when alarm time matches
Figure 23 Output Timing of INT1 Flag and INT2 Flag (1/2)
Seiko Instruments Inc.
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