MCF5270 FREESCALE [Freescale Semiconductor, Inc], MCF5270 Datasheet - Page 43

• Manufacturer Part Number: MCF5270
• Description: 32-bit Embedded Controller Division
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Figure 10
Freescale Semiconductor
NOTES:
1
NUM
D7
D8
D7 and D8 are for write cycles only.
D1
D2
D3
D4
D5
D6
RAS[1:0]
CAS[3:0]
1
2
D[31:0]
SDWE
A[23:0]
CAS
SD_CKE
RAS
CLKOUT high to SDRAM address valid
CLKOUT high to SDRAM control valid
CLKOUT high to SDRAM address invalid
CLKOUT high to SDRAM control invalid
SDRAM data valid to CLKOUT high
CLKOUT high to SDRAM data invalid
CLKOUT high to SDRAM data valid
CLKOUT high to SDRAM data invalid
shows an SDRAM read cycle.
1
D2
D1
1
DACR[CASL] = 2
0
ACTV
D4
MCF5271 Integrated Microprocessor Hardware Specification, Rev. 1.2
D2
Row
D2
1
2
NOP
D2
Characteristic
D3
3
Figure 10. SDRAM Read Cycle
4
Table 32. SDRAM Timing
D4
READ
5
6
NOP
7
8
NOP
Column
D2
9
10
t
Symbol
t
CHDDVW
t
D5
t
t
CHDDIW
t
t
t
CHDCV
DDVCH
CHDAV
CHDAI
CHDCI
CHDDI
Preliminary Electrical Characteristics
PALL
11
D4
12
D6
Min
D4
1.5
1.5
1.5
1.5
—
—
—
4
13
14
Max
—
—
—
—
—
9
9
9
15
Unit
ns
ns
ns
ns
ns
ns
ns
ns
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