M5271EVB Freescale Semiconductor, M5271EVB Datasheet - Page 28

• Manufacturer Part Number: M5271EVB
• Description: BOARD EVAL FOR MCF5270/71
• Manufacturer: Freescale Semiconductor

Specifications of M5271EVB

• Processor To Be Evaluated: MCF5271
• Interface Type: RS-232, Ethernet
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Electrical Characteristics
Figure 11
28
1
SD_SRAS
SD_CAS
RAS[1:0]
CAS[3:0]
SD_CKE
NUM
D7
D8
D7 and D8 are for write cycles only.
D[31:0]
D1
D2
D3
D4
D5
D6
SDWE
A[23:0]
1
1
shows an SDRAM read cycle.
1
D2
D1
DACR[CASL] = 2
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
1
0
ACTV
D4
D2
MCF5271 Integrated Microprocessor Hardware Specification, Rev. 4
Row
1
2
NOP
D2
Characteristic
D3
3
Figure 11. SDRAM Read Cycle
4
Table 13. SDRAM Timing
D4
READ
5
6
NOP
7
8
NOP
Column
D2
9
t
Symbol
t
CHDDVW
t
t
t
CHDDIW
t
t
t
CHDCV
DDVCH
CHDAV
CHDCI
CHDDI
CHDAI
D5
10
PALL
11
Min
1.5
1.5
1.5
1.5
12
—
—
—
4
D4
D4
D6
Freescale Semiconductor
13
Max
—
—
—
—
—
14
9
9
9
15
Unit
ns
ns
ns
ns
ns
ns
ns
ns