HD64F2357F20V Datasheet, PDF (197/1049 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-chip Microcomputer H8S Family / H8S/2300 Series

7.1.3 Overview of Functions
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)
Address Register Bit Length
Transfer Mode
Transfer Source
Source
Destination
Dual address mode
•
• Sequential mode
 1-byte or 1-word transfer
executed for one transfer request
 Memory address
incremented/decremented by 1 ^•
or 2
 1 to 65,536 transfers
• Idle mode
•
 1-byte or 1-word transfer
executed for one transfer request ^•
 Memory address fixed
 1 to 65,536 transfers
•
• Repeat mode
TPU channel 0 to
5 compare
match/input
capture A
interrupts
24/16
SCI transmission
data empty
interrupt
SCI reception data
full interrupt
A/D converter
conversion end
interrupt
External request
16/24
 1-byte or 1-word transfer
executed for one transfer request
 Memory address incremented/
decremented by 1 or 2
 After specified number of
transfers (1 to 256), initial state is
restored and operation continues
Single address mode
•
External request
24/DACK
DACK/24
• 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
Rev.6.00 Oct.28.2004 page 167 of 1016
REJ09B0138-0600H