MCIMX515DJM8C Freescale, MCIMX515DJM8C Datasheet - Page 65

• Manufacturer Part Number: MCIMX515DJM8C
• Manufacturer: Freescale

Specifications of MCIMX515DJM8C

• Operating Temperature (min): -20C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Figure 33
timing parameters for this diagram is shown in
1
2
Freescale Semiconductor
DD24 DQS - DQ Skew (defines the Data valid window in read cycles
DD25 DQS DQ in HOLD time from DQS
DD26 DQS output access time from SDCLK posedge
ID
Test conditions are: Capacitance 15 pF for DDR PADS. Recommended drive strengths is medium for SDCLK and high for
address and controls
SDRAM CLK and DQS related parameters are being measured from the 50% point. that is, high is defined as 50% of signal
value and low is defined as 50% as signal value. DDR SDRAM CLK parameters are measured at the crossing point of SDCLK
and SDCLK (inverted clock)
DQS (input)
DQ (input)
SDCLK_B
related to DQS)
SDCLK
shows the timing diagram for mDDR SDRAM DQ versus DQS and SDCLK read cycle. The
Figure 33. mDDR SDRAM DQ vs. DQS and SDCLK READ Cycle Timing Diagram
i.MX51 Applications Processors for Consumer and Industrial Products, Rev. 4
DD26
Table 57. mDDR SDRAM Read Cycle Parameter Table
PARAMETER
DD24
Data
DD25
Data
Table
Data
57.
Data
Symbol
t
t
DQSCK
DQSQ
t
QH
Data
1.75
200 MHz
Min Max Min Max Min Max
—
2
0.4
—
5
Data
1
2
2.05
166 MHz
—
2
Electrical Characteristics
0.75
Data
5.5
—
2.6
133 MHz
—
2
Data
0.85
6.5
—
Unit
ns
ns
ns
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