M83 datasheet(63/441 Pages) MITSUBISHI

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development

Rev.B2 for proof reading

Mitsubishi Microcomputers

M32C/83 group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Bus Control

Output

Input

Address

Bus cycle (Note)

< Separate bus (with wait) >

BCLK

Read signal

Write signal

Data bus

Address bus (Note 2)

Chip select (Note 2,3)

BCLK

Read signal

Data bus

Chip select (Note 2,3)

Data output

Address

Address bus (Note 2)

Address

Input

< Separate bus with 2 wait >

Write signal

BCLK

Read signal

Write signal

Address bus (Note 2)

Address

Bus cycle (Note)

< Separate bus (no wait) >

Output

Data bus

Chip select (Note 2,3)

Input

Bus cycle (Note)

Bus cycle (Note 1)

Address

Note 1: This timing example shows bus cycle length. Read cycle and write cycle may be continued after this

bus cycle.

Note 2: Address bus and chip select may get longer depending on the state of CPU such as an instruction

queue buffer.

Note 3: When accessing same external area (same CS area) continuously, chip select may output

continuously.

Figure 1.7.7. Typical bus timings using software wait

M83 Datasheet(PDF) 63 Page - Mitsubishi Electric Semiconductor

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