H8SX1663 datasheet(653/1158 Pages) RENESAS

653 / 1158 page

Section 11 Programmable Pulse Generator (PPG)

Rev.1.00 Jun. 07, 2006 Page 601 of 1102

REJ09B0294-0100

1. Set up the TPU channel to be used as the output trigger channel so that TGRA and TGRB are

output compare registers. Set the cycle in TGRB and the non-overlapping margin in TGRA,

and set the counter to be cleared by compare match B. Set the TGIEA bit in TIER to 1 to

enable the TGIA interrupt.

2. Write H'FF to NDERH, and set bits G3CMS1, G3CMS0, G2CMS1, and G2CMS0 in PCR to

select compare match in the TPU channel set up in the previous step to be the output trigger.

Set bits G3NOV and G2NOV in PMR to 1 to select non-overlapping pulse output.

Write output data H'95 to NDRH.

3. The timer counter in the TPU channel starts. When a compare match with TGRB occurs,

outputs change from 1 to 0. When a compare match with TGRA occurs, outputs change from 0

to 1 (the change from 0 to 1 is delayed by the value set in TGRA).

The TGIA interrupt handling routine writes the next output data (H'65) to NDRH.

4. 4-phase complementary non-overlapping pulse output can be obtained subsequently by writing

H'59, H'56, H'95... at successive TGIA interrupts.

If the DTC or DMAC is set for activation by a TGIA interrupt, pulse can be output without

imposing a load on the CPU.

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