r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 339

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

This LSI has a built-in DMA controller (DMAC) which can carry out data transfer on up to 4
channels.
7.1
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Short address mode
 Maximum of 4 channels can be used
 Dual address mode or single address mode can be selected
 In dual address mode, one of the two addresses, transfer source and transfer destination, is
 In single address mode, transfer source or transfer destination address only is specified as
 In single address mode, transfer can be performed in one bus cycle
 Choice of sequential mode, idle mode, or repeat mode for dual address mode and single
Full address mode
 Maximum of 2 channels can be used
 Transfer source and transfer destination addresses as specified as 24 bits
 Choice of normal mode or block transfer mode
mode)
 Six compare match/input capture interrupts of 16-bit timer-pulse unit (TPU0 to TPU5)
 Transmission complete interrupt and reception complete interrupt of serial communication
 Conversion end interrupt of A/D converter (A/D_0)
 EP1FIFO full interrupt and EP2FIFO empty interrupt of USB
 External request
 Auto-request
Selectable as short address mode or full address mode
16-Mbyte address space can be specified directly
Byte or word can be set as the transfer unit
Activation sources: internal interrupt, external request, auto-request (depending on transfer
Module stop mode can be set
specified as 24 bits and the other as 16 bits
24 bits
address mode
interface (SCI_0, SCI_1)
Features
Section 7 DMA Controller (DMAC)
Rev. 1.00 Sep. 19, 2008 Page 309 of 1342
Section 7 DMA Controller (DMAC)
REJ09B0467-0100