M16C62N Datasheet, PDF (66/213 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

DMAC
Mitsubishi microcomputers
M16C / 62N Group (80-pin)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(2) DMAC transfer cycles
Any combination of even or odd transfer read and write addresses is possible. Table 1.12.2 shows the
number of DMAC transfer cycles.
The number of DMAC transfer cycles can be calculated as follows:
No. of transfer cycles per transfer unit = No. of read cycles x j + No. of write cycles x k
Table 1.12.2. No. of DMAC transfer cycles
Transfer unit
8-bit transfers
(DMBIT= “1”)
16-bit transfers
(DMBIT= “0”)
Bus width
16-bit
(BYTE= “L”)
16-bit
(BYTE = “L”)
Access address
Even
Odd
Even
Odd
Single-chip mode
No. of read cycles No. of write cycles
1
1
1
1
1
1
2
2
Coefficient j, k
Internal memory
Internal ROM/RAM Internal ROM/RAM
No wait
With wait
1
2
SFR area
2
65