参数资料
型号: RT5C348B
厂商: RICOH COMPANY LTD
元件分类: XO, clock
英文描述: 4-WIRE SERIAL INTERFACE
中文描述: REAL TIME CLOCK, PDSO10
封装: 4 X 2.90 MM, 0.85 MM HEIGHT, 0.50 MM PITCH, TSSOP-10
文件页数: 40/45页
文件大小: 1276K
代理商: RT5C348B
Rx5C348A/B
Interrupt Process
(1) Periodic Interrupt
*2)
Other Interrupt
Processes
Set Periodic Interrupt
Cycle Selection Bits
CTFG=1?
Conduct
Periodic Interrupt
Yes
No
Control Register 2
(X1X1X011)
Generate Interrupt to CPU
*1)
*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.
(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
←0
*2)
WALE or DALE
←1
*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.
12345
Rev.2.01
- 45 -
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