rej10j1441_r32csimios_s| Datasheet

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3. Details of I/O Script Sample Programs
3.1. Timer A0 (Timer Mode) Sample Program (timerA0_TMode.ios)
This sample program simulates the operation of timer A0 in timer mode. [Timer function] Count source: Number of cycles is counted. Pulse output function: Not available Gate function: Not available [Operation] 1. When the count start flag is set to 1, the content of timer A0 register is counted down every 16 cycles, 16 counts at a time. 2. When the timer underflows (counted down below 0), the content of the reload register is reloaded into the timer A0 register and the timer starts counting over again. At the same time, the timer A0 interrupt request bit is set to 1. 3. When the count start flag is set to 0, the timer stops counting down, holding the count in progress when stopped. 4. When the interrupt is accepted, the timer A0 interrupt request bit is cleared to 0. [Differences with the actual chip] 1. When the value of the timer A0 register is changed in a program, the new value is written to the timer A0 register and reload register immediately. -> In the actual chip, the new value is held in the reload r
egister without being written to the timer A0 register immediately. 2. Even when the timer A0 interrupt request bit is cleared to 0 in a program, the timer interrupt request cannot be canceled. 3. The count source is fixed to f1 (divide-by-1 clock)

Rev.1.00 09. 16, 2006 page 2 of 10 REJ10J1441-0100