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
文件頁數(shù): 5/56頁
文件大小: 529K
代理商: S-35390A-J8T1G
2-WIRE REAL-TIME CLOCK
Rev.3.0_00
S-35390A
Seiko Instruments Inc.
13
3.
Status register 2
Status register 2 is a 1-byte register that is used to display and set various modes. The bit configuration is shown below.
B7
INT1FE
INT1ME
R/W
32kE
B6
B5
B4
B3
B2
B1
B0
INT2ME
INT2FE
INT1AE
R/W
INT2AE
TEST
R/W: Read/Write
Figure 13
Status Register 2
B0 : TEST
This is a test flag for SII. Be sure to set this flag to “0” in use. If this flag is set to “1”, be sure to initialize to set “0”.
B1 : INT2AE, B2 : INT2ME, B3 : INT2FE
These bits are used to select the output mode for the
2
INT
pin. Table 10 shows how to select the mode. To use an
alarm 2 interrupt, set alarm interrupt mode, then access the INT2 register.
Table 10
Output Modes for
2
INT
Pin
INT2AE
INT2ME
INT2FE
2
INT
Pin Output Mode
0
No interrupt
*1
0
1
Output of user-set frequency
*1
1
0
Per-minute edge interrupt
*1
1
Minute-periodical interrupt 1 (50% duty)
1
0
Alarm 2 interrupt
*1.
Don’t care (Both of 0 and 1 are acceptable).
B4 : 32kE, B5 : INT1AE, B6 : INT1ME, B7 : INT1FE
These bits are used to select the output mode for the
1
INT
pin. Table 11
shows how to select the mode. To use
alarm 1 interrupt, access the INT1 register after setting the alarm interrupt mode.
Table 11
Output Modes for
1
INT
Pin
32kE
INT1AE
INT1ME
INT1FE
1
INT
Pin Output Mode
0
No interrupt
0
*1
0
1
Output of user-set frequency
0
*1
1
0
Per-minute edge interrupt
0
1
Minute-periodical interrupt 1 (50% duty)
0
1
0
Alarm 1 interrupt
0
1
Minute-periodical interrupt 2
1
*1
32.768 kHz output
*1.
Don’t care (Both of 0 and 1 are acceptable).
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