YR0K42378FC000BA Renesas Electronics America, YR0K42378FC000BA Datasheet - Page 427

Manufacturer Part Number

YR0K42378FC000BA

KIT EVAL FOR H8S/2378

Manufacturer

Renesas Electronics America

For Use With/related Products

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Section 8 EXDMA Controller (EXDMAC)

This LSI has a built-in dual-channel external bus transfer DMA controller (EXDMAC). The

EXDMAC can carry out high-speed data transfer, in place of the CPU, to and from external

devices and external memory with a DACK (DMA transfer notification) facility.

• Direct specification of 16-Mbyte address space

• Selection of byte or word transfer data length

• Maximum number of transfers: 16M (16,777,215)/infinite (free-running)

• Selection of dual address mode or single address mode

• Selection of cycle steal mode or burst mode as bus mode

• Selection of normal mode or block transfer mode as transfer mode

• Two kinds of transfer requests: external request and auto-request

• An interrupt request can be sent to the CPU at the end of the specified number of transfers.

• Repeat area designation function:

• Operation in parallel with internal bus master:

• Acceptance of a transfer request and the start of transfer processing can be reported to an

external device via the EDRAK pin.

• Module stop mode can be set.

Note: This EXDMAC is not supported by the H8S/2375, H8S/2375R, H8S/2373, and

Rev.7.00 Mar. 18, 2009 page 359 of 1136

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