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III PERIPHERAL BLOCK: 8-BIT PROGRAMMABLE TIMERS
B-III-3-14 EPSON S1C33L03 FUNCTION PART
PTD07–PTD00: Timer 0 counter data (D[7:0]) / 8-bit timer 0 counter data (0x40162)
PTD17–PTD10: Timer 1 counter data (D[7:0]) / 8-bit timer 1 counter data (0x40166)
PTD27–PTD20: Timer 2 counter data (D[7:0]) / 8-bit timer 2 counter data (0x4016A)
PTD37–PTD30: Timer 3 counter data (D[7:0]) / 8-bit timer 3 counter data (0x4016E)
PTD47–PTD40: Timer 4 counter data (D[7:0]) / 8-bit timer 4 counter data (0x40176)
PTD57–PTD50: Timer 5 counter data (D[7:0]) / 8-bit timer 5 counter data (0x4017A)
The 8-bit programmable timer data can be read out from these bits.
These bits function as buffers that retain the counter data when read out, enabling the data to be read out at any
time.
At initial reset, PTD is not initialized.
PSET0: Timer 0 preset (D1) / 8-bit timer 0 control register (0x40160)
PSET1: Timer 1 preset (D1) / 8-bit timer 1 control register (0x40164)
PSET2: Timer 2 preset (D1) / 8-bit timer 2 control register (0x40168)
PSET3: Timer 3 preset (D1) / 8-bit timer 3 control register (0x4016C)
PSET4: Timer 4 preset (D1) / 8-bit timer 4 control register (0x40174)
PSET5: Timer 5 preset (D1) / 8-bit timer 5 control register (0x40178)
Preset the reload data in the counter.
Write "1": Preset
Write "0": Invalid
Read: Always "0"
The reload data of RLDx is preset in the counter of timer x by writing "1" to PSETx. If the counter is preset when
in a RUN state, the counter starts counting immediately after the reload data is preset.
If the counter is preset when in a STOP state, the reload data that has been preset is retained.
Writing "0" results in No Operation.
Since PSETx is a write-only bit, its content when read is always "0".
PTRUN0: Timer 0 RUN/STOP control (D0) / 8-bit timer 0 control register (0x40160)
PTRUN1: Timer 1 RUN/STOP control (D0) / 8-bit timer 1 control register (0x40164)
PTRUN2: Timer 2 RUN/STOP control (D0) / 8-bit timer 2 control register (0x40168)
PTRUN3: Timer 3 RUN/STOP control (D0) / 8-bit timer 3 control register (0x4016C)
PTRUN4: Timer 4 RUN/STOP control (D0) / 8-bit timer 4 control register (0x40174)
PTRUN5: Timer 5 RUN/STOP control (D0) / 8-bit timer 5 control register (0x40178)
Controls the counter's RUN/STOP states.
Write "1": RUN
Write "0": STOP
Read: Valid
The counter of each timer starts counting down when "1" written to PTRUNx, and stops counting when "0" is
written.
While in a STOP state, the counter retains its count until it is preset with reload data or placed in a RUN state.
When the state is changed from STOP to RUN, the counter can restart counting beginning with the retained count.
At initial reset, PTRUNx is set to "0" (STOP).