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Zilog Z80380 User Manual

Page 53

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5-19

Z380

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SER

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ANUAL

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ILOG

DC-8297-03

Table 5-18. Execution Time

Operation

Byte

Word

Word

Long

Long

Long

Long

Long

Sequence

B

W

B/B

W/W

W/B/B

B/W/B

B/B/W

B/B/B/B

Memory Read

3-4

3-4

5-6

5-6

7-8

7-8

7-8

9-10

Memory Write

0-1

0-1

2-3

2-3

4-5

4-5

4-5

6-7

Internal I/O Read

3-4

N/A

N/A

N/A

N/A

N/A

N/A

N/A

Internal I/O Write

0-1

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1X External I/O Read

4-5

4-5

N/A

N/A

N/A

N/A

N/A

N/A

1X External I/O Write

1-2

1-2

N/A

N/A

N/A

N/A

N/A

N/A

2X External I/O Read

9-11

9-11

N/A

N/A

N/A

N/A

N/A

N/A

2X External I/O Write

1-3

1-3

N/A

N/A

N/A

N/A

N/A

N/A

4X External I/O Read

17-21

17-21

N/A

N/A

N/A

N/A

N/A

N/A

4X External I/O Write

1-5

1-5

N/A

N/A

N/A

N/A

N/A

N/A

6X External I/O Read

25-31

25-31

N/A

N/A

N/A

N/A

N/A

N/A

6X External I/O Write

1-7

1-7

N/A

N/A

N/A

N/A

N/A

N/A

8X External I/O Read

33-41

33-41

N/A

N/A

N/A

N/A

N/A

N/A

8X External I/O Write

1-9

1-9

N/A

N/A

N/A

N/A

N/A

N/A

Note:

Units are in Clocks. “N/A” is not applicable for that particular transaction.