MCIMX351AVM4B Freescale, MCIMX351AVM4B Datasheet - Page 56

• Manufacturer Part Number: MCIMX351AVM4B
• Manufacturer: Freescale

Specifications of MCIMX351AVM4B

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

56
SD21 DQS – DQ Skew (defines the Data valid window in read cycles related to DQS).
SD22 DQS DQ HOLD time from DQS
SD23 DQS output access time from SDCLK posedge
ID
DQS (input)
DQ (input)
SDCLK
SDCLK
Figure 36. Mobile DDR SDRAM DQ versus DQS and SDCLK Read Cycle Timing Diagram
SDRAM CLK and DQS-related parameters are measured from the 50%
point—that is, “high” is defined as 50% of signal value and “low” is defined
as 50% of signal value.
The timing parameters are similar to the ones used in SDRAM data sheets.
Table 41
the ESDCTL at the negative edge of SDCLK, and the parameters are
measured at maximum memory frequency.
SDRAM CLK and DQS-related parameters are measured from the 50%
point—that is, “high” is defined as 50% of signal value, and “low” is
defined as 50% of signal value.
The timing parameters are similar to the ones used in SDRAM data sheets.
Table 42
the ESDCTL at the negative edge of SDCLK, and the parameters are
measured at maximum memory frequency.
Table 42. Mobile DDR SDRAM Read Cycle Timing Parameters
i.MX35 Applications Processors for Automotive Products, Rev. 9
indicates SDRAM requirements. All output signals are driven by
indicates SDRAM requirements. All output signals are driven by
SD23
SD21
Data
Parameter
SD22
Data
NOTE
NOTE
Data
Data
Data
Data
tDQSCK
Symbol
tDQSQ
tQH
Freescale Semiconductor
Data
Min. Max. Unit
2.3
—
—
Data
0.85
6.7
—
ns
ns
ns