CHAPTER 5 MEMORY ACCESS CONTROL FUNCTION
User’s Manual U12688EJ4V0UM00
137
5.3.2 DRAM connections
Examples of connections to DRAM are shown below.
Figure 5-6. Examples of Connections to DRAM
(a) In the case of 16 Mbit (1 M
××××
16) DRAM
A0 to A9
I/O1 to I/O16
RAS
LCAS
16 Mbit (1 M
×
16) DRAM
UCAS
OE
WE
A1 to A10
D0 to D15
RASn
LCAS
UCAS
V850E/MS1
WE
OE
(b) In the case of 4 Mbit (1 M
××××
4) DRAM
A1 to A10
D0 to D7
D8 to D15
RASn
LCAS
UCAS
V850E/MS1
WE
OE
A0 to A9
I/O1 to I/O4
RAS
CAS
4 Mbit (1 M
×
4) DRAM
WE
OE
A0 to A9
I/O1 to I/O4
RAS
CAS
4 Mbit (1 M
×
4) DRAM
WE
OE
A0 to A9
I/O1 to I/O4
RAS
CAS
4 Mbit (1 M
×
4) DRAM
WE
OE
A0 to A9
I/O1 to I/O4
RAS
CAS
4 Mbit (1 M
×
4) DRAM
WE
OE
Remark
n = 0 to 7
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