IMX35 datasheet(52/148 Pages) FREESCALE

Part #	IMX35

Description	i.MX35 Applications Processors for Automotive Products

PDF	148 Pages

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

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i.MX35 Applications Processors for Automotive Products, Rev. 6

Freescale Semiconductor

NOTE

SDR SDRAM CLK parameters are 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.

Table 35 indicates SDRAM requirements. All output signals are driven by

the ESDCTL at the negative edge of SDCLK, and the parameters are

measured at maximum memory frequency.

Figure 30. SDRAM Self-Refresh Cycle Timing Diagram

SD7

Address hold time

tAH

1.8

—

SD10

Precharge cycle period1

tRP

clock

SD11

Auto precharge command period1

tRC

clock

1 SD10 and SD11 are determined by SDRAM controller register settings.

Table 35. SDRAM Refresh Timing Parameters (continued)

Parameter

Symbol

Min.

Max.

Unit

SDCLK

CAS

RAS

ADDR

CKE

Don’t care

SD16

IMX35 Datasheet(PDF) 52 Page - Freescale Semiconductor, Inc