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MC9328MXL_06 Datasheet, PDF (69/90 Pages) Freescale Semiconductor, Inc – MX Family of applications processors | |||
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Functional Description and Application Information
Table 27. SDRAM Read Timing Parameter Table
Ref
No.
Parameter
1.8 ± 0.1 V
3.0 ± 0.3 V
Unit
Minimum Maximum Minimum Maximum
1 SDRAM clock high-level width
2.67
â
4
2 SDRAM clock low-level width
6
â
4
3 SDRAM clock cycle time
11.4
â
10
3S CS, RAS, CAS, WE, DQM setup time
3.42
â
3
3H CS, RAS, CAS, WE, DQM hold time
2.28
â
2
4S Address setup time
3.42
â
3
4H Address hold time
2.28
â
2
5 SDRAM access time (CL = 3)
â
6.84
â
5 SDRAM access time (CL = 2)
â
6.84
â
5 SDRAM access time (CL = 1)
â
22
â
6 Data out hold time
2.85
â
2.5
7 Data out high-impedance time (CL = 3)
â
6.84
â
7 Data out high-impedance time (CL = 2)
â
6.84
â
7 Data out high-impedance time (CL = 1)
â
22
â
8 Active to read/write command period (RC = 1)
tRCD1
â
tRCD1
1 tRCD = SDRAM clock cycle time. This settings can be found in the MC9328MXL reference manual.
â
ns
â
ns
â
ns
â
ns
â
ns
â
ns
â
ns
6
ns
6
ns
22
ns
â
ns
6
ns
6
ns
22
ns
â
ns
MC9328MXL Technical Data, Rev. 8
Freescale Semiconductor
69
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