HD64F2357VF13 Datasheet, PDF(195/1049 Page) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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HD64F2357VF13 Datasheet, PDF (195/1049 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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Section 7 DMA Controller

7.1 Overview

The H8S/2357 Group has a on-chip DMA controller (DMAC) which can carry out data transfer on up to 4 channels.

7.1.1 Features

The features of the DMAC are listed below.

â¢ Choice of short address mode or full address mode

Short address mode

ï£§ Maximum of 4 channels can be used

ï£§ Choice of dual address mode or single address mode

ï£§ In dual address mode, one of the two addresses, transfer source and transfer destination, is specified as 24 bits and

the other as 16 bits

ï£§ In single address mode, transfer source or transfer destination address only is specified as 24 bits

ï£§ In single address mode, transfer can be performed in one bus cycle

ï£§ Choice of sequential mode, idle mode, or repeat mode for dual address mode and single address mode

Full address mode

ï£§ Maximum of 2 channels can be used

ï£§ Transfer source and transfer destination address specified as 24 bits

ï£§ Choice of normal mode or block transfer mode

â¢ 16-Mbyte address space can be specified directly

â¢ Byte or word can be set as the transfer unit

â¢ Activation sources: internal interrupt, external request, auto-request (depending on transfer mode)

ï£§ Six 16-bit timer-pulse unit (TPU) compare match/input capture interrupts

ï£§ Serial communication interface (SCI0, SCI1) transmission data empty interrupt, reception data full interrupt

ï£§ A/D converter conversion end interrupt

ï£§ External request

ï£§ Auto-request

â¢ Module stop mode can be set

ï£§ The initial setting enables DMAC registers to be accessed. DMAC operation is halted by setting module stop mode

Rev.6.00 Oct.28.2004 page 165 of 1016

REJ09B0138-0600H

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