參數(shù)資料
型號(hào)： S-35399A03-J8T2G
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： 1 TIMER(S), REAL TIME CLOCK, PDSO8
封裝： LEAD FREE, SOP-8
文件頁(yè)數(shù)： 18/53頁(yè)
文件大?。?/td> 472K
代理商： S-35399A03-J8T2G
2-WIRE REAL-TIME CLOCK
Rev.2.0_00
S-35399A03
Seiko Instruments Inc.
25
3. Per-minute edge interrupt output
Per-minute edge interrupt output is the function to output “L” from the
1
INT /
2
INT
pin, when the first minute-carry
processing is done, after selecting the output mode. To set the pin output to “H”, turn off the output mode of per-minute
edge interrupt. In the
1
INT
pin output mode, input “0” in INT1ME in the status register 2. In the
2
INT
pin output mode,
input “0” in INT2ME.
OFF
INT1ME/INT2ME
INT1 pin/INT2 pin
"L" is output again if this period is within 7.9 ms*1.
Change by program
Minute-carry processing
Minute-carry
processing
Status register 2 setting
INT1 pin output mode
32kE = 0, INT1AE = Don’t care (0 or 1), INT1FE = 0
INT2 pin output mode
INT2AE = Don’t care (0 or 1), INT2FE = 0
*1.
Pin output is set to “H” by disabling the output mode within 7.9 ms, because the signal of this procedure is maintained
for 7.9 ms. Note that pin output is set to “L” by setting enable the output mode again.
Figure 27 Timing of Per-Minute Edge Interrupt Output
4. Minute-periodical interrupt output 1
The minute-periodical interrupt 1 is the function to output the one-minute clock pulse (Duty 50%) from the
1
INT /
2
INT
pin, when the first minute-carry processing is done, after selecting the output mode.
INT1ME, INT1FE
INT2ME, INT2FE
30 s
INT1 pin/INT2 pin
Minute-carry
processing
Minute-carry
processing
Minute-carry
processing
Minute-carry
processing
Minute-carry
processing
"L" is output again if this period is within 7.9 ms*1.
Change by program (OFF)
"H" is output again if this period is within 7.9 ms.
"L" is output at the next minute-carry processing
Status register 2 setting
INT1 pin output mode
32kE = 0, INT1AE = 0
INT2 pin output mode
INT2AE = 0
*1.
Setting the output mode disable makes the pin output “H”, while the output from the
1
INT
/
2
INT
pin is in “L”.
Note that pin output is set to “L” by setting enable the output mode again.
Figure 28 Timing of Minute-periodical Interrupt Output 1
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