参数资料
型号: RV5C387A-F
厂商: RICOH COMPANY LTD
元件分类: 时钟/数据恢复及定时提取
英文描述: 0 TIMER(S), REAL TIME CLOCK, PDSO10
封装: 4 X 2.90 MM, 1.20 MM HEIGHT, SSOP-10
文件页数: 42/49页
文件大小: 330K
代理商: RV5C387A-F
47
RV5C387A
8.3 Reading Time and Calendar Data
8.3-1 Ordinary Process of Reading Time and Calendar Data
Stop condition
Start condition
Read from clock and
calendar counters
*
1
*
2
8.3-2 Basic Process of Reading Time and Calendar Data Synchronized with Periodic Interrupt
CTFG=1?
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
Other Interrupt
Processes
*1) When reading from clock and calendar counters, do not insert stop
condition until all times from second to year have been read to prevent
error in reading time. (Detailed in “1.2-6 Data transmission under special
condition”.
*2) Take care so that process from start condition to stop condition will be
complete within 0.5sec. (Detailed in “1.2-6 Data transmission under
special condition”.
*1) This step is intended to select the level mode as a waveform mode for the
periodic interrupt function.
*2) This step must be completed within 0.5 second.
*3) This step is intended to set the CTFG bit to 0 in the Control Register 2 to
cancel an interrupt to the CPU.
相关PDF资料
PDF描述
RX-4571LC REAL TIME CLOCK, PDSO12
RX-4571SA REAL TIME CLOCK, PDSO14
RX-4571SA 0 TIMER(S), REAL TIME CLOCK, PDSO14
RX-4574SG 0 TIMER(S), REAL TIME CLOCK, PDSO16
RX-4591CF 0 TIMER(S), REAL TIME CLOCK, PDSO10
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