參數(shù)資料
型號: MPC8349CZUAGD
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 400 MHz, RISC PROCESSOR, PBGA672
封裝: 35 X 35 MM, 1.46 MM HEIGHT, 1 MM PITCH, TBGA-672
文件頁數(shù): 25/108頁
文件大?。?/td> 1275K
代理商: MPC8349CZUAGD
MPC8349E PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 7
Freescale Semiconductor
23
DDR SDRAM
Figure 4 shows the DDR SDRAM output timing for address skew with respect to any MCK.
Figure 4. Timing Diagram for tAOSKEW Measurement
Figure 5 provides the AC test load for the DDR bus.
Figure 5. DDR AC Test Load
Table 15 shows the DDR SDRAM measurement conditions.
Table 15. DDR SDRAM Measurement Conditions
Symbol
DDR
Unit
Notes
VTH
MVREF ± 0.31 V
V
1
VOUT
0.5
× GV
DD
V2
Notes:
1. Data input threshold measurement point.
2. Data output measurement point.
ADDR/CMD
MCK[n]
tMCK
tAOSKEWmax)
CMD
NOOP
tAOSKEW(min)
ADDR/CMD
CMD
NOOP
Output
Z0 = 50 Ω
GVDD/2
RL = 50 Ω
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