參數(shù)資料
型號: S-35380A-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: REAL TIME CLOCK, PDSO8
封裝: SOP-8
文件頁數(shù): 4/47頁
文件大?。?/td> 504K
代理商: S-35380A-J8T1G
2-WIRE REAL-TIME CLOCK
S-35380A
Rev.2.0_00
Seiko Instruments Inc.
12
3. Status Register_2
Status register_2 is an 8-bit register that is used to display and set various modes. The bit configuration is
shown below.
B7
LSB
TEST
INT2AE
R/W
INT2FE
MSB
B6
B5
B4
B3
B2
B1
B0
INT1AE
32kE
INT2ME
R/W
R/W: Read/write-enabled
R/W
INT1ME
INT1FE
Figure 10 Status Register_2
B7: TEST
The TEST flag is a bit for testing the IC. If the TEST flag is set to "1", the IC is
switched to the TEST mode. If this flag is "1", it is necessary to initialize it to "0" by
setting the reset flag of status register_1 to "1".
B6: INT2AE, B5: INT2ME, B4: INT2FE
These flags are used to select the output mode from the INT2 pin. Mode selections
are shown below. When using the alarm 2 function, after setting the alarm interrupt
mode, access INT1 register_2.
Table 10 Interrupt Modes (INT2)
INT2AE
INT2ME
INT2FE
INT2 Pin Output Mode
0
No interrupt
*1
0
1
Selected frequency steady interrupt
*1
1
0
Per-minute edge interrupt
*1
1
Per-minute steady interrupt 1 (50% duty)
1
0
Alarm interrupt
*1. Don’t care (either 0 or 1 acceptable).
B3: 32kE, B2: INT1AE, B1: INT1ME, B0: INT1FE
These flags are used to select the output mode from the INT1 pin. Mode selections
are shown below. When using the alarm 1 function, after setting the alarm interrupt
mode, access INT1 register_1.
Table 11 Interrupt Modes (INT1)
32kE
INT1AE
INT1ME
INT1FE
INT1 Pin Output Mode
0
No interrupt
1
*1
32 kHz output
0
*1
0
1
Selected frequency steady interrupt
0
*1
1
0
Per-minute edge interrupt
0
1
Per-minute steady interrupt 1 (50% duty)
0
1
0
Alarm interrupt
0
1
Per-minute steady interrupt 2
*1. Don’t care (either 0 or 1 acceptable).
DISCONTINUED
PRODUCT
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