參數(shù)資料
型號: RV5C338A-E2
廠商: RICOH COMPANY LTD
元件分類: XO, clock
英文描述: DIODE ZENER SINGLE 200mW 8.2Vz 20mA-Izt 0.02549 0.1uA-Ir 6.5 SOD-323 3K/REEL
中文描述: REAL TIME CLOCK, PDSO10
封裝: 4 X 2.90 MM, 1.20 MM HEIGHT, SSOP-10
文件頁數(shù): 49/52頁
文件大?。?/td> 440K
代理商: RV5C338A-E2
R
×
5C338A
46
YES
NO
Periodic Interrupt Process
CTFG=1
Other Interrupt
Processes
Generate Interrupt to CPU
Write “
×
,1,
×
,1,
×
,0,1,1”
to Control Register 2
Set Periodic Interrupt
Cycle Selection Bits
*
1
*
2
WAFG or DAFG=1
Generate Interrupt to CPU
WALE or DALE=1
YES
NO
Conduct Alarm Interrupt
WALE or DALE=0
Set Alarm Minute, Hour,
and Day-of-week Registers
Other Interrupt
Processes
Write “
×
,1,
×
,1,
×
,1,0,1”
to Control Register 2
*
1
*
2
*
3
8.4-2 Alarm Interrupt
8.4 Interrupt Process
8.4-1 Periodic Interrupt
*
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.
*
1) This step is intended to once disable the alarm interrupt circuit by setting
the WALE and 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 “
×
,1,
×
,1,
×
,1,0,1” and “
×
,1,
×
,1,
×
,1,1,0” to the Alarm_W
registers and the Alarm_D registers, respectively.
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