Renesas M32R/ECU Series User Manual

15
15-19
EXTERNAL BUS INTERFACE
32180 Group User’s Manual (Rev.1.0)
15.5 Typical Connection of External Extension Memory
(2) When the Bus Mode Control Register = "1"
A typical memory connection when using external extension memory is shown in Figure 15.5.2. (External
extension memory can only be used in external extension mode and processor mode.)
Figure 15.5.2 Typical Connection of External Extension Memory (when BUSMOD bit = "1")
Note: • The address and data are connected in such a way that pin 0 is the MSB and pin 15 is the LSB.
When connecting external extension memory, connections of the MSB and LSB sides must be
reversed.
SRAM
M32180F8
A11
(1024KB)
A30
D0
D15
RD#
CS0#
CS1#
CS2#
CS3#
BLE#
BHE#
WAIT#
H'0000 0000
H'0040 0000
H'0020 0000
H'000F FFFF
H'0010 0000
(2MB)
A18
A0
D15
D0
RD#
CS#
max1MB
A19
A0
D15
D0
RD#(D0-D15)
CS#
BHE#(D0-D7)
BLE#(D8-D15)
max2MB
WR# WR#(D0-D15)
(1MB)
Flash memory
Memory mapping
Internal flash memory
External memory area
External memory area
1M-CS0 area
2M-CS1 area
Number of bus wait states can be set to 0-7.
Normally used as port. WAIT is used only when seven or more wait states are needed.

Renesas M32R/ECU Series Specifications

General

Brand	Renesas
Model	M32R/ECU Series
Category	Computer Hardware
Language	English