MCIMX31LCVMN4D Freescale, MCIMX31LCVMN4D Datasheet - Page 45

• Manufacturer Part Number: MCIMX31LCVMN4D
• Manufacturer: Freescale

Specifications of MCIMX31LCVMN4D

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

Freescale Semiconductor
1
SD10 and SD11 are determined by SDRAM controller register settings.
SD10
SD11
SD1
SD2
SD3
SD6
SD7
ID
SDRAM clock high-level width
SDRAM clock low-level width
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.
Parameter
Table 33. SDRAM Refresh Timing Parameters
Table 33
MCIMX31C/MCIMX31LC Technical Data, Rev. 4.3
1
indicates SDRAM requirements. All output signals
1
NOTE
NOTE
Symbol
tCH
tRC
tCL
tCK
tAS
tAH
tRP
Min
3.4
3.4
7.5
1.8
1.8
1
2
Electrical Characteristics
Max
4.1
4.1
20
—
—
—
4
clock
clock
Unit
ns
ns
ns
ns
ns
45