MPC8640DEC datasheet(23/140 Pages) FREESCALE

Numer części	MPC8640DEC

Szczegółowy opis	Integrated Host Processor Hardware Specifications

PDF	140 Pages

Scroll/Zoom	100%

Producent	FREESCALE [Freescale Semiconductor, Inc]

Strona internetowa	http://www.freescale.com

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MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

DDR and DDR2 SDRAM

6.2.2

DDR SDRAM Output AC Timing Specifications

Table 20. DDR SDRAM Output AC Timing Specifications

At recommended operating conditions.

Parameter

Symbol 1

Min

Max

Unit

Notes

MCK[n] cycle time, MCK[n]/MCK[n] crossing

tMCK

310

MCK duty cycle

533 MHz

400 MHz

tMCKH/tMCK

ADDR/CMD output setup with respect to MCK

tDDKHAS

533 MHz

1.48

—

400 MHz

1.95

—

ADDR/CMD output hold with respect to MCK

tDDKHAX

533 MHz

1.48

—

400 MHz

1.95

—

MCS[n] output setup with respect to MCK

tDDKHCS

533 MHz

1.48

—

400 MHz

1.95

—

MCS[n] output hold with respect to MCK

tDDKHCX

533 MHz

1.48

—

400 MHz

1.95

—

MCK to MDQS Skew

tDDKHMH

–0.6

0.6

MDQ/MECC/MDM output setup with respect

to MDQS

tDDKHDS,

tDDKLDS

533 MHz

590

—

400 MHz

700

—

MDQ/MECC/MDM output hold with respect to

MDQS

tDDKHDX,

tDDKLDX

533 MHz

590

—

400 MHz

700

—

MDQS preamble start

tDDKHMP

–0.5

× tMCK – 0.6 –0.5 × tMCK +0.6

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