參數(shù)資料
型號(hào): S-35390A-J8T1G
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): 17/56頁(yè)
文件大小: 529K
代理商: S-35390A-J8T1G
2-WIRE REAL-TIME CLOCK
S-35390A
Rev.3.0_00
Seiko Instruments Inc.
24
5.
Minute-periodical interrupt output 2 (only in the
1
INT
pin output mode)
The output of minute-periodical interrupt 2 is the function to output “L”, for 7.9 ms, from the
1
INT
pin, synchronizing
with the first minute-carry processing after selecting the output mode. However, in Read in the real-time data register,
the procedure delays at max. 0.5 sec thus output “L” from the
1
INT
pin also delays at max. 0.5 sec. In Write in the
real-time data register, some delay is made in the output period due to Write timing and the second-data during Write.
(a)
During normal operation
7.9 ms
60 s
INT1 pin
Minute-carry processing
(b)
During Read in the real-time data register
7.9 ms
INT1 pin
Serial
communication
0.5 s Max.
60 s
Real-time data
read command
Real-time
data reading
Real-time data
read command
Real-time
data reading
Minute-carry processing
(Normal minute-
carry processing)
(c)
During Write in the real-time data register
7.9 ms
INT1 pin
Real-time data
write timing
55 s
80 s
Minute-carry processing
45 s
10 s
30 s
50 s
The output period is shorter.
The output period is longer.
Second data of writing: "50" s
Second data of writing: "10" s
Figure 29
Timing of Minute-periodical Interrupt Output 2
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