HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 249

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

7.1.3
Tables 7.1 (1) and (2) summarize DMAC functions in short address mode and full address mode,
respectively.
Table 7.1 (1) Overview of DMAC Functions (Short Address Mode)
Transfer Mode
Dual address mode
•
•
•
•
•
•
•
Sequential mode
⎯ 1-byte or 1-word transfer executed
⎯ Memory address
⎯ 1 to 65,536 transfers
Idle mode
⎯ 1-byte or 1-word transfer executed
⎯ Memory address fixed
⎯ 1 to 65,536 transfers
Repeat mode
⎯ 1-byte or 1-word transfer executed
⎯ Memory address incremented/
⎯ After specified number of transfers
Single address mode
1-byte or 1-word transfer executed for
one transfer request
Transfer in 1 bus cycle using DACK pin
in place of address specifying I/O
Specifiable for sequential, idle, and
repeat modes
for one transfer request
incremented/decremented by 1 or 2
for one transfer request
for one transfer request
decremented by 1 or 2
(1 to 256), initial state is restored
and operation continues
Overview of Functions
Section 7 DMA Controller (Not Supported in the H8S/2321)
Transfer Source
•
•
•
•
•
•
TPU channel 0 to
5 compare
match/input
capture A
interrupt
SCI transmit-
data-empty
interrupt
SCI receive-
data-full interrupt
A/D converter
conversion end
interrupt
External request
External request
Rev.6.00 Sep. 27, 2007 Page 219 of 1268
Source
24/16
24/DACK
Address Register Bit Length
REJ09B0220-0600
Destination
16/24
DACK/24