參數(shù)資料
型號: S-35392A-I8T1U
元件分類: 時鐘/數(shù)據(jù)恢復(fù)及定時提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO8
封裝: HALOGEN FREE AND LEAD FREE, SNT-8
文件頁數(shù): 5/47頁
文件大小: 419K
代理商: S-35392A-I8T1U
2-WIRE REAL-TIME CLOCK
Rev.2.0_00
S-35392A
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
SC2
B6
B5
B4
B3
B2
B1
B0
INT2ME
INT2FE
INT1AE
R/W
INT2AE
TEST
R/W: Read/Write
Figure 11
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
alarm 2 interrupt, access the INT2 register after setting the alarm interrupt mode.
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 : SC2
This is an SRAM type register that can be freely set by users.
B5 : INT1AE, B6 : INT1ME, B7 : INT1FE
To use the alarm 1 function, access the INT register 1 after setting INT1AE = “1”, INT1ME = “0”, and INT1FE = “0”.
In other settings than this, these flags are disable for setting the alarm time (free registers).
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