參數(shù)資料
型號(hào): RV5C338A
廠商: RICOH COMPANY LTD
元件分類: XO, clock
英文描述: 3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION
中文描述: REAL TIME CLOCK, PDSO10
封裝: 4 X 2.90 MM, 1.20 MM HEIGHT, SSOP-10
文件頁(yè)數(shù): 47/52頁(yè)
文件大?。?/td> 440K
代理商: RV5C338A
R
×
5C338A
44
8.3 Reading Time and Calendar Data
8.3-1 Ordinary Process of Reading Time and Calendar Data
Wait for 31
μ
s
Read from Time Counter
and Calendar Counter
*
1
8.3-2 Basic Process of Reading Time and Calendar Data Synchronized with Periodic Interrupt
CTFG=1
Other Interrupt
Processes
Generate Interrupt in CPU
Write “
×
,1,
×
,1,
×
,0,1,1”
to Control Register 2
Set Periodic Interrupt
Cycle Selection Bits
YES
NO
Read from Time Counter
and Calendar Counter
*
1
*
2
*
3
*
1) This step of waiting is detailed in “1.5 Considerations in Reading and
Writing Time Data”.
*
1) This step is intended to select the level mode as a waveform mode for the
periodic interrupt function.
*
2) If this step is completed within 1 second, the step of waiting described in
“8.3-1 Ordinary Process of Reading Time and Calendar Data” above need
not be conducted. This step is detailed in “1.5 Considerations in Reading
and Writing Time Data”.
*
3) 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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RV5C339A 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION
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