MCIMX31VKN5 Freescale, MCIMX31VKN5 Datasheet - Page 51

• Manufacturer Part Number: MCIMX31VKN5
• Manufacturer: Freescale

Specifications of MCIMX31VKN5

• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Freescale Semiconductor
1
SD10 and SD11 are determined by SDRAM controller register settings.
SD10
SD11
SD3
SD6
SD7
ID
SDRAM clock cycle time
Address setup time
Address hold time
Precharge cycle period
Auto precharge command period
SDR SDRAM CLK parameters are being 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—that is,
are driven by the ESDCTL at the negative edge of SDCLK and the
parameters are measured at maximum memory frequency.
Table 36. SDRAM Refresh Timing Parameters (continued)
Parameter
Table 36
MCIMX31/MCIMX31L Technical Data, Rev. 4.1
1
indicates SDRAM requirements. All output signals
1
NOTE
Symbol
tCK
tRC
tAS
tAH
tRP
Min
7.5
1.8
1.8
1
2
Electrical Characteristics
Max
20
—
—
—
4
clock
clock
Unit
ns
ns
ns
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