mcf5407 Freescale Semiconductor, Inc, mcf5407 Datasheet - Page 278

• Manufacturer Part Number: mcf5407
• Description: Mcf5407 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

Asynchronous Operation
Note that in Table 11-8, MCF5407 pin A19 is not connected because DRAM address bit 18
is already provided on MCF5407 pin A18; thus, the next MCF5407 pin used should be A20.
11-10
MCF5407 Address Pin
MCF5407 Address Pin
17
16
15
14
13
12
11
10
19
21
23
25
9
16
15
14
13
12
11
10
18
20
22
24
9
Table 11-8. DRAM Addressing for 16-Bit Wide Memories
Table 11-7. DRAM Addressing for Byte-Wide Memories
MCF5407 Address Bit
MCF5407 Address Bit
Driven for RAS
Driven for RAS
17
16
15
14
13
12
11
10
19
21
23
25
9
16
15
14
13
12
11
10
18
20
22
24
9
MCF5407 User’s Manual
MCF5407 Address Bit Driven
MCF5407 Address Bit Driven
when CAS is Asserted
when CAS is Asserted
18
20
22
24
0
1
2
3
4
5
6
7
8
17
19
21
23
1
2
3
4
5
6
7
8
Base memory size of
Base memory size of
Memory Size
Memory Size
256 Kbytes
128 Kbytes
512 Kbytes
16 Mbytes
64 Mbytes
32 Mbytes
4 Mbytes
2 Mbytes
8 Mbytes
1 Mbyte