s-35392a Seiko Instruments Inc., s-35392a Datasheet - Page 23

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

Rev.1.3
3. Per-minute edge interrupt output
4. Minute-periodical interrupt output 1
INT2ME, INT2FE
Status register 2 setting
• INT2 pin output mode
Per-minute edge interrupt output is the function to output “L” from the
done, after selecting the output mode.
To set the pin output to “H”, in the
this mode.
*1. Pin output is set to “H” by disabling the output mode within 7.9 ms, because the signal of this procedure is maintained
The minute-periodical interrupt 1 is the function to output the one-minute clock pulse (Duty 50%) from the
when the first minute-carry processing is done, after selecting the output mode.
*1. Setting the output mode disable makes the pin output “H”, while the output from the
Status register 2 setting
• INT2 pin output mode
INT2AE = Don’t care (0 or 1), INT2FE = 0
INT2AE = 0
for 7.9 ms. Note that pin output is set to “L” by setting enable the output mode again.
Note that pin output is set to “L” by setting enable the output mode again.
_00
INT2 pin
"L" is output again if this period is within 7.9 ms
INT2 pin
INT2ME
Minute-carry
processing
Figure 26 Timing of Minute-periodical Interrupt Output 1
"L" is output again if this period is within 7.9 ms
Figure 25 Timing of Per-Minute Edge Interrupt Output
30 s
"L" is output at the next minute-carry processing
"H" is output again if this period is within 7.9 ms
Minute-carry processing
INT
Minute-carry
processing
2
Change by program (OFF)
30 s
pin output mode, input “0” in INT2ME in the status register 2 in order to turn off
Seiko Instruments Inc.
30 s
Change by program
Minute-carry
30 s
*1
processing
.
OFF
30 s
INT
2
Minute-carry
Minute-carry
processing
*1
processing
30 s
pin, when the first minute-carry processing is
.
2-WIRE REAL-TIME CLOCK
30 s
INT
2
Minute-carry
30 s
pin is in “L”.
processing
30 s
S-35392A
INT
2
pin,
23