SPEAR300-2 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

SPEAR300-2

Embedded MPU with ARM926 core, flexible memory support, powerful connectivity features and human machine interface

STMicroelectronics 

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SPEAr300

6.1.3

DDR2 command timings

Figure 11. DDR2 Command waveforms

CLK

ADDRESS, STROBEs,

AND CONTROL LINES t4 t5

Figure 12. DDR2 Command path

Timing requirements

Table 28. DDR2 Command timings

Frequency

t4 max

t5 max

Unit

333 MHz

1.39

1.40

ns

266 MHz

1.77

1.78

ns

200 MHz

166 MHz

2.39

2.40

ns

2.90

2.91

ns

133 MHz

3.65

3.66

ns

6.2

CLCD timing characteristics

The characterization timing is done considering an output load of 10 pF on all the

outputs.The operating conditions are in worst case V=0.90 V T=125 °C and in best case V

=1.10 V T= 40° C.

The CLCD has a wide variety of configurations and setting and the parameters change

accordingly. Two main scenarios will be considered, one with direct clock to output (166

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