H8SSLASH2224 datasheet(511/1071 Pages) RENESAS

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Section 11 16-Bit Timer Pulse Unit (TPU)

Rev. 5.00 Aug 08, 2006 page 425 of 982

REJ09B0054-0500

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. In the

H8S/2227 Group, the TPU has eight input capture/compare match interrupts, four for channel 0

and two each for channels 1 and 2. In other groups, the TPU has 16 input capture/compare match

interrupts, four each for channels 0 and 3, and two each for channels 1, 2, 4, and 5.

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. In the H8S/2227 Group, the TPU has three

overflow interrupts, one each for channels 0 to 2. In other groups, the TPU has six overflow

interrupts, one each for channels 0 to 5.

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 of the H8S/2227 Group has two

underflow interrupts, one each for channels 1 and 2. In other groups, the TPU has four underflow

interrupts, one each for channels 1, 2, 4, and 5.

11.6

DTC Activation

The DTC can be activated by the TGR input capture/compare match interrupt for a channel. For

details, see section 9, Data Transfer Controller (DTC).

In the H8S/2227 Group, a total of eight TPU input capture/compare match interrupts can be used

as DTC activation sources, four for channel 0 and two each for channels 1 and 2. In other groups,

a total of 16 TPU input capture/compare match interrupts can be used as DTC activation sources,

four each for channels 0 and 3, and two each for channels 1, 2, 4, and 5.

11.7

DMAC Activation (H8S/2239 Group Only)

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

For details, see section 8, DMA Controller (DMAC).

In the TPU, a total of six TGRA input capture/compare match interrupts can be used as DMAC

activation sources, one for each channel.

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