MCIMX31LITEKITC Freescale Semiconductor, MCIMX31LITEKITC Datasheet - Page 50

• Manufacturer Part Number: MCIMX31LITEKITC
• Description: BOARD DEV FOR I.MX31
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of MCIMX31LITEKITC

• Contents: Module and Misc Hardware
• For Use With/related Products: i.MX31
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Electrical Characteristics
50
1
SD11 and SD12 are determined by SDRAM controller register settings.
SD1
SD2
SD13
SD14
ID
ADDR
ID
RAS
CAS
SDCLK
SDCLK
WE
CS
SD6
SDRAM clock high-level width
SDRAM clock low-level width
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.
Data setup time
Data hold time
BA
Table 35. SDR SDRAM Write Timing Parameters (continued)
SD7
Parameter
Table 36. SDRAM Refresh Timing Parameters
Table 35
Figure 36. SDRAM Refresh Timing Diagram
SD11
MCIMX31/MCIMX31L Technical Data, Rev. 4.1
Parameter
indicates SDRAM requirements. All output signals
NOTE
SD10
Symbol
tCH
tCL
SD1
SD3
Symbol
tDS
tDH
SD2
Min
SD10
3.4
3.4
Min
2.0
1.3
ROW/BA
Freescale Semiconductor
Max
4.1
4.1
Max
—
—
Unit
Unit
ns
ns
ns
ns