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Chapter 7    16-bit Timer

VII - 20

16-bit Timer Pulse Output

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Count Timing of Timer Pulse Output (Timer 7)

N

0000 0001

N-1

N

Count
clock

TM7EN
flag

Compare
register 1

Binary
counter

Interrupt
request flag

0000 0001

0000

N-1

N

0000 0001

N-1

N

TM7IO output

The TM7IO pin outputs 2 x cycle, compared to the value in the compare register 1. If the binary
counter reaches the compare register, and the binary counter is cleared to x'0000' or the full count
overflow, the TM7IO output (timer output) is inverted. The inversion of the timer output is changed at
the rising edge of the count clock. This is happened to form the waveform inside to correct the output
cycle.

In the initial state after releasing reset, the timer pulse output is reset, and low output is fixed.
Therefore, release the reset of the timer pulse output by setting the TM7CL flag of the
TM7MD1 register to "0".