M30622SAFP MITSUBISHI [Mitsubishi Electric Semiconductor], M30622SAFP Datasheet - Page 73

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M30622SAFP

Manufacturer Part Number
M30622SAFP
Description
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Manufacturer
MITSUBISHI [Mitsubishi Electric Semiconductor]
Datasheet

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DMAC
Table 1.13.2. No. of DMAC transfer cycles
(2) DMAC transfer cycles
8-bit transfers
(DMBIT= “1”)
16-bit transfers
(DMBIT= “0”)
Transfer unit
Any combination of even or odd transfer read and write addresses is possible. Table 1.13.2 shows the
number of DMAC transfer cycles.
The number of DMAC transfer cycles can be calculated as follows:
Coefficient j, k
Internal ROM/RAM
No wait
No. of transfer cycles per transfer unit = No. of read cycles x j + No. of write cycles x k
1
(BYTE = “H”)
(BYTE = “H”)
(BYTE = “L”)
(BYTE= “L”)
Internal memory
Bus width
16-bit
16-bit
8-bit
8-bit
Internal ROM/RAM
With wait
2
Access address
Even
Even
Even
Even
Odd
Odd
Odd
Odd
SFR area
2
No. of read No. of write No. of read No. of write
cycles
Single-chip mode
1
1
1
2
Separate bus
No wait
1
cycles
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
1
1
1
2
External memory
Separate bus
With wait
Memory expansion mode
Microprocessor mode
2
cycles
1
1
1
1
1
2
2
2
M16C / 62A Group
Mitsubishi microcomputers
Multiplex
bus
cycles
3
1
1
1
1
1
2
2
2
73

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