m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 348

• Manufacturer Part Number: m5m51016btp
• Description: Renesas 16-bit Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Figure 4.3.6. Chip selects and address bus
4.3.5 Chip Selects and Address Bus
When there are insufficient chip select signals, it is necessary to generate chip selects externally. Figure
4.3.6 shows an example of a connection in which the CS2 (128K bytes) area is divided into four 32K byte
areas.
0FFFF
1 F F F F
2FFFF
F F F F F
1 7 F F F
00000
0 8 0 0 0
10000
1 8 0 0 0
20000
3 0 0 0 0
C N V
B Y T E
M i c r o c o m p u t e r
S S
16
16
1 6
1 6
16
1 6
16
1 6
16
1 6
1 6
D
A
0
0
M e m o r y m a p
t o A
t o D
C S 2
W R
R D
1 7
7
page 339 of 354
I C 0
IC1
I C 2
I C 3
A
A
A
1 5
16
1 7
7 4 H C 1 3 8
1
2
3
4
5
6
8
1 6
1 4
13
1 2
1 1
Y 1
Y 2
Y 3
Y4
C S 2
A
A
A
A
A
A
A
A
A
A
D
D
D
9
8
7
6
5
4
3
2
1
0
0
1
2
1
2
3
4
5
6
7
8
9
1 0
1 1
12
13
1 4
M5M5278
I C 0
2 8
2 7
2 6
25
2 4
2 3
2 2
21
20
1 9
1 8
17
16
1 5
_______
A
A
A
A
A
Y
D
D
D
D
D
1 0
1 1
1 2
13
1 4
1
7
6
5
4
3
A
D
0
0
t o A
to D
1 4
7
M5M5278
I C 3
4. External Buses
Y
4