CHAPTER 6 8/16-bit Up/Down Counters/Timer and U-Timers
[Bit 6] CTUT: Counter write bit
This bit transfers data from RCR to UDCR.
When this bit is set to "1", data is transferred from RCR to UDCR.
Writing "0" to this bit has no effect. The read value is always "0".
Do not set this bit to "1" during counting (when the CSTR bit of the CSR is "1").
[Bit 5] UCRE: UDCR clear enable bit
This bit controls the compare operation that clears UDCR.
UDCR clear functions other than clearing due to comparing (such as due to the ZIN pin) are not
[Bit 4] RLDE: Reload enable bit
This bit controls the start of the reload function. When the reload function is started, if UDCR leads the
underflow, this bit transfers the value of RCR to UDCR.
[Bit 3] UDCC: UDCR clear bit
This bit clears the UDCR. When this bit is set to "0", the UDCR is cleared to 0000
Writing "1" to this bit has no effect. The read value is always "1".
[Bit 2] CGSC: Counter clear/gate selection bit
This bit selects the function of the external pin ZIN.
Disables counter clear (initial value).
Enables counter clear.
Disables the reload function (initial value).
Enables the reload function.
Counter clear function (initial value)
Counter clear by compare