m30833fjgp Renesas Electronics Corporation., m30833fjgp Datasheet - Page 84

• Manufacturer Part Number: m30833fjgp
• Description: Renesas 16/32-bit Single-chip Microcomputer M16c Family / M32c/80 Series
• Manufacturer: Renesas Electronics Corporation.

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R
M
e
E
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3
Figure 7.5 External Bus Operation with Software Wait State (2)
0
2
1
9
C
3 .
B
8 /
0
1
0
3
(1) Separate Bus with 3 Wait States
(2) Multiplexed Bus with 2 Wait States
(3) Multiplexed Bus with 3 Wait States
3
J
G
4
a
NOTES:
0 -
n
o r
3 .
Write Signal
Read Signal
Data Bus
BCLK
Write Signal
Address Bus/Data Bus
Chip-Select Signal
BCLK
Write Signal
1. This example illustrates bus cycle length. Read cycle and write cycle may occur consecutively.
BCLK
Address Bus
Chip-Select
Signal
ALE
Address Bus
Read Signal
Address Bus
Address Bus/
Data Bus
ALE
Chip-Select
Signal
Read Signal
1
2. The address bus and chip-select signal may be extended depending on CPU state such as an
3. When the microcomputer continuously accesses the same external space (same CS area), the chip-
u
, 1
3
p
1
instruction queue buffer.
select signal may be output continuously.
2
(
0
M
(2, 3)
(2, 3)
0
3
6
(2)
2
C
(2)
8 /
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Address
M
(2, 3)
3
2
(2)
C
f o
8 /
4
8
3
Address
Bus cycle
Bus cycle
8
) T
Address
Address
Data output
Data output
(1)
Bus cycle
(1)
Address
Data output
(1)
Address
Address
Address
Bus cycle
Bus cycle
Address
Address
Bus cycle
(1)
(1)
Input
(1)
Input
Input
7. Bus