SIC63616-(Rev. 1.0) NO. P158
3240-0412
RFOUT: RFOUT enable register (FF60H•D2)
Enables RFOUT output from the P03 port.
When "1" is written: Enabled (RFOUT)
When "0" is written: Disabled (I/O port)
Reading: Valid
When using the RFOUT output, write "1" to RFOUT to set P03 as the RFOUT output port.
At initial reset, this register is set to "0".
RFCNT: Continuous oscillation enable register (FF60H•D3)
Enables the R/f converter to oscillate continuously.
When "1" is written: Continuous oscillation
When "0" is written: Normal oscillation
Reading: Valid
By writing "1" to RFCNT, the reference oscillation or sensor oscillation can be continued even if the stop
condition has been met. This function with RFOUT enabled allows easy measurement of the CR oscillation
frequency.
At initial reset, this register is set to "0".
RFRUNS: Sensor oscillation RUN control/status (FF61H•D0)
Starts R/f conversion for the sensor and indicates the operating (RUN/STOP) status.
When "1" is written: R/f conversion starts
When "0" is written: No operation
When "1" is read:
RUN status
When "0" is read:
STOP status
Writing "1" to RFRUNS starts an R/f conversion for the sensor. The register is held at "1" while the R/f
conversion is being processed and is set to "0" when the R/f conversion has completed. Writing "0" during
an R/f conversion stops the CR oscillation.
When the channel 1 sensor type (AC bias and DC bias) is changed by ERF0–ERF1 during sensor oscillation,
RFRUNS is not reset. In this case, reset RFRUNS by writing "0".
If RFRUNS and RFRUNR are set to "1" simultaneously, RFRUNR is effective.
At initial reset, this register is set to "0".
RFRUNR: Reference oscillation RUN control/status (FF61H•D1)
Starts R/f conversion for the reference resistance and indicates the operating (RUN/STOP) status.
When "1" is written: R/f conversion starts
When "0" is written: No operation
When "1" is read:
RUN status
When "0" is read:
STOP status
Writing "1" to RFRUNR starts an R/f conversion for the reference resistance. The register is held at "1" while
the R/f conversion is being processed and is set to "0" when the R/f conversion has completed. Writing "0"
during an R/f conversion stops the CR oscillation.
When the channel 1 sensor type (AC bias and DC bias) is changed by ERF0–ERF1 during reference
oscillation, RFRUNR is not reset. In this case, reset RFRUNR by writing "0". RFRUNR is reset when the
channel for R/f conversion is changed.
If RFRUNS and RFRUNR are set to "1" simultaneously, RFRUNR is effective.
At initial reset, this register is set to "0".
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