IMX53IEC datasheet(63/173 Pages) FREESCALE

tên linh kiện	IMX53IEC

Giải thích chi tiết về linh kiện	i.MX53 Applications Processors for Industrial Products

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Electrical Characteristics

i.MX53 Applications Processors for Industrial Products, Rev. 6

Freescale Semiconductor

Figure 29 and Table 41 show the address and control timing parameters for LPDDR2.

Figure 29. DDR SDRAM Address and Control Timing Parameters for LPDDR2

Figure 30 and Table 42 show the data write timing parameters.

Figure 30. DDR SDRAM Data Write Cycle

Table 41. DDR SDRAM Timing Parameter Table for LPDDR21 2

1 All timings are refer to Vref level cross point.

Reference load model is 25

Ω resistor from each of the DDR outputs to VDD_REF.

Parameter

Symbol

SDCLK = 400 MHz

Units

Min

Max

LP1

SDRAM clock high-level width

tCH

0.45

0.55

tCK

LP2

SDRAM clock low-level width

tCL

0.45

0.55

tCK

LP3

CS, CKE setup time

tIS

0.3

—

LP4

CS, CKE hold time

tIH

0.3

—

LP3

CA setup time

tIS

0.3

—

LP4

CA hold time

tIH

0.3

—

CKE

LP4

LP3

LP4

LP3

LP2

LP3

LP1

SDCLK

SDCLK_B

DQS (output)

DQ (output)

DQM (output)

Data

DDR17

DDR18

DDR21

DDR23

DDR22

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