參數(shù)資料
型號: RV5C387A-E2
廠商: RICOH COMPANY LTD
元件分類: XO, clock
英文描述: I2C-bus Real-Time Clock ICs with Voltage Monitoring Function
中文描述: 0 TIMER(S), REAL TIME CLOCK, PDSO10
封裝: 4 X 2.90 MM, 1.20 MM HEIGHT, SSOP-10
文件頁數(shù): 42/42頁
文件大小: 363K
代理商: RV5C387A-E2
RV5C387A PRELIMINARY
12345
- 42 -
14.8.4.
(1) Periodic Interrupt
Interrupt Process
*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
Fay-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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