參數(shù)資料
型號: MC8641DTHX1250HE
廠商: Freescale Semiconductor
文件頁數(shù): 46/130頁
文件大小: 0K
描述: IC DUAL CORE PROCESSOR 1023-CBGA
標(biāo)準包裝: 1
系列: MPC86xx
處理器類型: 32-位 MPC86xx PowerPC
速度: 1.25GHz
電壓: 1.05V
安裝類型: 表面貼裝
封裝/外殼: 1023-BCBGA,F(xiàn)CCBGA
供應(yīng)商設(shè)備封裝: 1023-FCCBGA(33x33)
包裝: 托盤
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
22
Freescale Semiconductor
DDR and DDR2 SDRAM
Table 15 provides the recommended operating conditions for the DDR SDRAM component(s) when
Dn_GVDD(typ) = 2.5 V.
Table 16 provides the DDR capacitance when Dn_GV
DD (typ)=2.5 V.
Table 17 provides the current draw characteristics for MVREF.
Table 15. DDR SDRAM DC Electrical Characteristics for D
n_GVDD (typ) = 2.5 V
Parameter/Condition
Symbol
Min
Max
Unit
Notes
I/O supply voltage
D
n_GVDD
2.375
2.625
V
1
I/O reference voltage
D
n_MVREF
0.49
× Dn_GVDD
0.51
× Dn_GVDD
V2
I/O termination voltage
VTT
D
n_MVREF – 0.04
D
n_MVREF + 0.04
V
3
Input high voltage
VIH
D
n_MVREF + 0.15
D
n_GVDD + 0.3
V
Input low voltage
VIL
–0.3
D
n_MVREF– 0.15
V
Output leakage current
IOZ
–50
50
μA4
Output high current (VOUT = 1.95 V)
IOH
–16.2
mA
Output low current (VOUT = 0.35 V)
IOL
16.2
mA
Notes:
1. D
n_GVDD is expected to be within 50 mV of the DRAM Dn_GVDD at all times.
2. MVREF is expected to be equal to 0.5 × Dn_GVDD, and to track Dn_GVDD DC variations as measured at the receiver.
Peak-to-peak noise on D
n_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 D
n_MVREF. This rail should track variations in the DC level of Dn_MVREF.
4. Output leakage is measured with all outputs disabled, 0 V
VOUT Dn_GVDD.
Table 16. DDR SDRAM Capacitance for D
n_GVDD (typ) = 2.5 V
Parameter/Condition
Symbol
Min
Max
Unit
Notes
Input/output capacitance: DQ, DQS
CIO
68
pF
1
Delta input/output capacitance: DQ, DQS
CDIO
—0.5
pF
1
Note:
1. This parameter is sampled. D
n_GVDD = 2.5 V ± 0.125 V, f = 1 MHz, TA = 25°C, VOUT = Dn_GVDD/2,
VOUT (peak-to-peak) = 0.2 V.
Table 17. Current Draw Characteristics for MVREF
Parameter / Condition
Symbol
Min
Max
Unit
Note
Current draw for MVREF
IMVREF
500
μA1
1. The voltage regulator for MVREF must be able to supply up to 500 μA current.
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