H8SSLASH2218 datasheet(371/750 Pages) RENESAS

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Section 9 16-Bit Timer Pulse Unit (TPU)

Rev.6.00 Jun. 03, 2008 Page 323 of 698

REJ09B0074-0600

Input Capture/Compare Match Interrupt: An interrupt is requested if the TGIE bit in TIER is

set to 1 when the TGF flag in TSR is set to 1 by the occurrence of a TGR input capture/compare

match on a particular channel. The interrupt request is cleared by clearing the TGF flag to 0. The

TPU has 8 input capture/compare match interrupts, four each for channel 0, and two each for

channels 1 and 2.

Overflow Interrupt: An interrupt is requested if the TCIEV bit in TIER is set to 1 when the

TCFV flag in TSR is set to 1 by the occurrence of TCNT overflow on a channel. The interrupt

request is cleared by clearing the TCFV flag to 0. The TPU has three overflow interrupts, one for

each channel.

Underflow Interrupt: An interrupt is requested if the TCIEU bit in TIER is set to 1 when the

TCFU flag in TSR is set to 1 by the occurrence of TCNT underflow on a channel. The interrupt

request is cleared by clearing the TCFU flag to 0. The TPU has two underflow interrupts, one each

for channels 1 and 2.

9.6.2

DMAC Activation

The DMAC can be activated by the TGRA input capture/compare match interrupt for a channel.

For details, see section 7, DMA Controller (DMAC). With the TPU, a total of three TGRA input

capture/compare match interrupts can be used as DMAC activation sources, one for each channel.

9.6.3

A/D Converter Activation

The A/D converter can be activated by the TGRA input capture/compare match for a channel. If

the TTGE bit in TIER is set to 1 when the TGFA flag in TSR is set to 1 by the occurrence of a

TGRA input capture/compare match on a particular channel, a request to start A/D conversion is

sent to the A/D converter. If the TPU conversion start trigger has been selected on the A/D

converter side at this time, A/D conversion is started. In the TPU, a total of three TGRA input

capture/compare match interrupts can be used as A/D converter conversion start sources, one for

each channel.

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