參數資料
型號: MPC8560VTAQFC
廠商: Freescale Semiconductor
文件頁數: 19/108頁
文件大?。?/td> 0K
描述: MPU POWERQUICC III 783FCPBGA
標準包裝: 36
系列: MPC85xx
處理器類型: 32-位 MPC85xx PowerQUICC III
速度: 1.0GHz
電壓: 1.3V
安裝類型: 表面貼裝
封裝/外殼: 784-BBGA,F(xiàn)CBGA
供應商設備封裝: 783-FCPBGA(29x29)
包裝: 托盤
MPC8560 Integrated Processor Hardware Specifications, Rev. 4.2
18
Freescale Semiconductor
DDR SDRAM
6 DDR SDRAM
This section describes the DC and AC electrical specifications for the DDR SDRAM interface of the
MPC8560.
6.1 DDR SDRAM DC Electrical Characteristics
Table 13 provides the recommended operating conditions for the DDR SDRAM component(s) of the
MPC8560.
Table 14 provides the DDR capacitance.
Table 13. DDR SDRAM DC Electrical Characteristics
Parameter/Condition
Symbol
Min
Max
Unit
Notes
I/O supply voltage
GVDD
2.375
2.625
V
1
I/O reference voltage
MVREF
0.49
× GVDD
0.51
× GVDD
V2
I/O termination voltage
VTT
MVREF – 0.04
MVREF + 0.04
V
3
Input high voltage
VIH
MVREF + 0.18
GVDD + 0.3
V
4
Input low voltage
VIL
–0.3
MVREF – 0.18
V
4
Output leakage current
IOZ
–10
10
μA5
Output high current (VOUT = 1.95 V)
IOH
–15.2
mA
Output low current (VOUT = 0.35 V)
IOL
15.2
mA
MVREF input leakage current
IVREF
—100
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.VIH can tolerate an overshoot of 1.2V over GVDD for a pulse width of ≤3 ns, and the pulse width cannot be greater
than tMCK. VIL can tolerate an undershoot of 1.2V below GND for a pulse width of ≤3 ns, and the pulse width
cannot be greater than tMCK.
5.Output leakage is measured with all outputs disabled, 0 V
VOUT GVDD.
Table 14. DDR SDRAM Capacitance
Parameter/Condition
Symbol
Min
Max
Unit
Notes
Input/output capacitance: DQ, DQS, MSYNC_IN
CIO
68
pF
1
Delta input/output capacitance: DQ, DQS
CDIO
—0.5
pF
1
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.
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