Zilog Z80380 User Manual
Page 53
5-19
Z380
™
U
SER
'
S
M
ANUAL
Z
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.