H8SSLASH2218 datasheet(351/750 Pages) RENESAS

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Section 9 16-Bit Timer Pulse Unit (TPU)

Rev.6.00 Jun. 03, 2008 Page 303 of 698

REJ09B0074-0600

TCNT value

TGR

H'0000

CST bit

TGF

Time

Counter cleared by TGR

compare match

Flag cleared by software or

DMAC activation

Figure 9.8 Periodic Counter Operation

Waveform Output by Compare Match: The TPU can perform 0, 1, or toggle output from the

corresponding output pin using compare match.

1. Example of setting procedure for waveform output by compare match

Figure 9.9 shows an example of the setting procedure for waveform output by compare match.

Output selection

Select waveform output mode

Set output timing

Start count operation

Select initial value 0 output or 1 output, and

compare match output value 0 output, 1 output,

or toggle output, by means of TIOR. The set

initial value is output at the TIOC pin unit the

first compare match occurs.

Set the timing for compare match generation in

TGR.

Set the CST bit in TSTR to 1 to start the count

operation.

[1]

[2]

[3]

Figure 9.9 Example of Setting Procedure for Waveform Output by Compare Match

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