M16C62_M Datasheet, PDF (547/615 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

External Buses
Mitsubishi microcomputers
M16C / 62A Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
4.3.4 Two 8-bit and 16-Bit Memory to 16-Bit Width Data Bus Connection Example
Figure 4.3.5 shows an example of connecting M5M28F102 (16-bit flash memory) and two M5M5278's (8-
bit SRAM) to a 16-bit data bus.
Microcomputer
CNVSS
WRH
BYTE
WRL
A1 to A16
D0 to D15
CS1
CS0
RD
A15
to
A1
A14 W
to
RD
A0
OE
S ^CS1
D1
to
D0
to
D8 ^D7
M5M5278D
A15
to
A1
A14
to
W
OE ^RD
A0
S ^CS1
D1
to
D8
to
D8 ^D15
M5M5278D
CS0
VPP
CE
A15
to
A16
to
A0 ^A1
D15
to
D0
RD _{OE WE}
M5M28F102
Figure 4.3.5. Example of connection of two 8-bit memories and one 16-bit memory to 16-bit width data bus
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