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CHAPTER 5 MEMORY ACCESS CONTROL FUNCTION
151
User’s Manual U14359EJ4V0UM
5.2.2 Page ROM connection
Examples of connection to page ROM are shown below.
Figure 5-3. Examples of Connection to Page ROM
(a) When data bus width is 16 bits
A0 to A19
O1 to O16
CE
OE
16 Mb page ROM
(1 Mword
×
16 bits)
A1 to A20
D0 to D15
CSn
RD
V850E/MA1
(b) When data bus width is 8 bits
A0 to A20
O1 to O8
CE
OE
16 Mb page ROM
(2 Mwords
×
8 bits)
A1 to A21
D0 to D7
CSn
RD
D8 to D15
V850E/MA1
A0 to A20
O1 to O8
CE
OE
16 Mb page ROM
(2 Mwords
×
8 bits)
Remark
n = 0 to 7