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参数资料
型号： MPC8572CPXAUNB
厂商： FREESCALE SEMICONDUCTOR INC
元件分类： 微控制器/微处理器
英文描述： 32-BIT, 1333 MHz, MICROPROCESSOR, PBGA1023
封装： 33 X 33 MM, PLASTIC, FCBGA-1023
文件页数： 52/138页
文件大小： 1502K
代理商： MPC8572CPXAUNB
MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 2
20
Freescale Semiconductor
DDR2 and DDR3 SDRAM Controller
6
DDR2 and DDR3 SDRAM Controller
This section describes the DC and AC electrical specifications for the DDR2 and DDR3 SDRAM
controller interface of the MPC8572E. Note that the required GVDD(typ) voltage is 1.8Vor 1.5V when
interfacing to DDR2 or DDR3 SDRAM respectively.
6.1
DDR2 and DDR3 SDRAM Interface DC Electrical Characteristics
Table 10 provides the recommended operating conditions for the DDR SDRAM Controller of the
MPC8572E when interfacing to DDR2 SDRAM.
Table 11 provides the recommended operating conditions for the DDR SDRAM Controller of the
MPC8572E when interfacing to DDR3 SDRAM.
Table 10. DDR2 SDRAM Interface DC Electrical Characteristics for GVDD(typ) = 1.8 V
Parameter/Condition
Symbol
Min
Max
Unit
Notes
I/O supply voltage
GVDD
1.71
1.89
V
1
I/O reference voltage
MVREFn
0.49
× GVDD
0.51
× GVDD
V2
I/O termination voltage
VTT
MVREFn –0.04
MVREFn + 0.04
V
3
Input high voltage
VIH
MVREFn + 0.125
GVDD +0.3
V
—
Input low voltage
VIL
–0.3
MVREFn – 0.125
V
—
Output leakage current
IOZ
–50
50
μA4
Output high current (VOUT = 1.420 V)
IOH
–13.4
—
mA
—
Output low current (VOUT = 0.280 V)
IOL
13.4
—
mA
—
Notes:
1. GVDD is expected to be within 50 mV of the DRAM GVDD at all times.
2. MVREFn 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 MVREFn 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 MVREFn. This rail should track variations in the DC level of MVREFn.
4. Output leakage is measured with all outputs disabled, 0 V
≤ VOUT ≤ GVDD.
Table 11. DDR3 SDRAM Interface DC Electrical Characteristics for GVDD(typ) = 1.5 V
Parameter/Condition
Symbol
Min
Typical
Max
Unit
I/O supply voltage
GVDD
1.425
1.575
V
1
I/O reference voltage
MVREFn
0.49
× GVDD
0.51
× GVDD
V2
Input high voltage
VIH
MVREFn + 0.100
GVDD
V—
Input low voltage
VIL
GND
MVREFn – 0.100
V
—
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