mcimx50 Freescale Semiconductor, Inc, mcimx50 Datasheet - Page 66

• Manufacturer Part Number: mcimx50
• Description: I.mx50 Applications Processors For Consumer Products
• Manufacturer: Freescale Semiconductor, Inc

Electrical Characteristics
4.8
This section includes descriptions of the electrical specifications of DRAM MC module which interfaces
external DDR2, LPDDR1, and LPDDR2 memory devices.
4.8.1
The following diagrams and tables specify the timings related to the address and command pins, which
interfaces DDR2 and LPDDR1 memory devices.
66
DDR1
DDR2
ID
DRAM Timing Parameters
DRAM Command & Address Output Timing—DDR2 and LPDDR1
DRAM_SDCLK_B
DRAM_SDCLK
DRAM_CS0
DRAM_RAS
DRAM_CAS
DRAM_SDWE
DRAM_ADDR
CK cycle time
CK high level width
Figure 28. DRAM Command/Address Output Timing—DDR2 and LPDDR1
i.MX50 Applications Processors for Consumer Products, Rev. 0
Description
DDR4
Table 42. EMI Command/Address AC Timing
DDR4
bank
row
DDR5
Symbol
DDR5
tCH
tCK
DDR4
DDR2
0.48 tCK
3.75
Min
column
DDR1
bank
0.52 tCK
Max
—
Freescale Semiconductor
DDR3
DDR5
Unit
ns
ns