MPC8358E datasheet(21/112 Pages) FREESCALE

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MPC8360E/MPC8358E PowerQUICC™ II Pro Processor Revision 2.x TBGA Silicon Hardware Specifications, Rev. 2

Freescale Semiconductor

DDR and DDR2 SDRAM

Table 16 provides the DDR capacitance when GVDD(typ) = 2.5 V.

6.2

DDR and DDR2 SDRAM AC Electrical Characteristics

This section provides the AC electrical characteristics for the DDR and DDR2 SDRAM interface.

6.2.1

DDR and DDR2 SDRAM Input AC Timing Specifications

Table 17 provides the input AC timing specifications for the DDR2 SDRAM interface when

GVDD(typ) = 1.8 V.

Table 18 provides the input AC timing specifications for the DDR SDRAM interface when

GVDD(typ) = 2.5 V.

Input current (0 V

≤VIN ≤ OVDD)IIN

—±10

μA

Notes:

1. GVDD is expected to be within 50 mV of the DRAM GVDD at all times.

2. MVREF is expected to be equal to 0.5 × GVDD, and to track GVDD DC variations as measured at the receiver.

Peak-to-peak noise on MVREF may not exceed ±2% of the DC value.

3. VTT is not applied directly to the device. It is the supply to which far end signal termination is made and is expected

to be equal to MVREF. This rail should track variations in the DC level of MVREF.

4. Output leakage is measured with all outputs disabled, 0 V

≤ V

OUT ≤ GVDD.

Table 16. DDR SDRAM Capacitance for GVDD(typ) = 2.5 V

Parameter/Condition

Symbol

Min

Max

Unit

Notes

Input/output capacitance: DQ, DQS

CIO

Delta input/output capacitance: DQ, DQS

CDIO

—0.5

Note:

1. This parameter is sampled. GVDD = 2.5 V ± 0.125 V, f = 1 MHz, TA = 25°C, VOUT = GVDD/2, VOUT (peak to peak) =

0.2 V.

Table 17. DDR2 SDRAM Input AC Timing Specifications for GVDD(typ) = 1.8 V

At recommended operating conditions with GVDD of 1.8 V ± 5%.

Parameter

Symbol

Min

Max

Unit

Notes

AC input low voltage

VIL

—MVREF – 0.25

AC input high voltage

VIH

MVREF + 0.25

—

Table 18. DDR SDRAM Input AC Timing Specifications Mode for GVDD(typ) = 2.5 V

At recommended operating conditions with GVDD of 2.5 V ± 5%.

Parameter

Symbol

Min

Max

Unit

Notes

AC input low voltage

VIL

—MVREF – 0.31

Table 15. DDR SDRAM DC Electrical Characteristics for GVDD(typ) = 2.5 V (continued)

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