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參數(shù)資料
| 型號(hào)： | R2025D |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | XO, clock |
| 英文描述： | High precision I2C-Bus Real-Time Clock Module |
| 中文描述： | REAL TIME CLOCK, DSO20 |
| 封裝： | 6.10 X 5 MM, 1.30 MM HEIGHT, SON-22/20 |
| 文件頁數(shù)： | 45/47頁 |
| 文件大小： | 524K |
| 代理商： | R2025D |
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R2025S/D
45
Interrupt Process
(1) Periodic Interrupt
*2)
Other Interrupt
Processes
Set Periodic Interrupt
Cycle Selection Bits
CTFG=1
Yes
Conduct
Periodic Interrupt
No
Control Register 2
←
(X1X1X011)
Generate Interrupt to CPU
*1)
(2) Alarm Interrupt
*3)
Other Interrupt
Processes
Set Alarm Min., Hr., and
Day-of-week Registers
WAFG or DAFG=1
Conduct Alarm Interrupt
Yes
No
Control Register 2
←
(X1X1X101)
Generate Interrupt to CPU
*1)
WALE or DALE
←
1
WALE or DALE
←
0
*2)
*1) This step is intended to once disable the alarm
interrupt circuit by setting the WALE or DALE bits to 0
in anticipation of the coincidental occurrence of a
match between current time and preset alarm time in
the process of setting the alarm interrupt function.
*2) This step is intended to enable the alarm interrupt
function after completion of all alarm interrupt
settings.
*3) This step is intended to once cancel the alarm
interrupt function by writing the settings of "X,1,X,
1,X,1,0,1" and "X,1,X,1,X,1,1,0" to the Alarm_W
Registers and the Alarm_D Registers, respectively.
*1) This step is intended to select the level mode as a
waveform mode for the periodic interrupt function.
*2) This step is intended to set the CTFG bit to 0 in
the Control Register 2 to cancel an interrupt to the
CPU.
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