8-Bit Osc1 Timer Count Mode - Epson S1C17001 Technical Manual

14 8-BIT OSC1 TIMER (T8OSC1)

14.2 8-bit OSC1 Timer Count Mode

The 8-bit OSC1 timer features two count modes: Repeat mode and One-shot mode. These modes are selected using
the T8ORMD bit (D1/T8OSC1_CT register).
∗ T8ORMD: Count Mode Select Bit in the 8-bit OSC1 Timer Control (T8OSC1_CTL) Register (D1/0x50c0)
Repeat mode (T8ORMD = 0, default)
Setting T8ORMD to 0 sets the 8-bit OSC1 timer to Repeat mode.
In this mode, once the count starts, the 8-bit OSC1 timer continues running until stopped by the application
program. If the counter matches the compare data, the timer resets the counter and continues counting. Since
the interrupt signsl is output at the same time, the 8-bit OSC1 timer should be set to this mode to generate
periodic interrupts at desired intervals.
One-shot mode (T8ORMD = 1)
Setting T8ORMD to 1 sets the 8-bit OSC1 timer to One-shot mode.
In this mode, the 8-bit OSC1 timer stops automatically as soon as the counter matches the compare data.
This means only one interrupt can be generated after the timer starts. Note that the timer resets the counter, then
stops after a complete match has occurred. The 8-bit OSC1 timer should be set to this mode to set a specific
wait time.
Note: Make sure the 8-bit OSC1 timer count is halted before changing count mode settings.
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S1C17001 TECHNICAL MANUAL