参数资料
型号: MPC8548VUAVGB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 1500 MHz, MICROPROCESSOR, CBGA783
封装: 29 X 29 MM, 1 MM PITCH, FLIP CHIP, LEAD FREE, CERAMIC, BGA-783
文件页数: 58/142页
文件大小: 1504K
代理商: MPC8548VUAVGB
MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
22
Freescale Semiconductor
DDR and DDR2 SDRAM
6.2.2
DDR SDRAM Output AC Timing Specifications
Table 19. DDR SDRAM Output AC Timing Specifications
At recommended operating conditions.
Parameter
Symbol1
Min
Max
Unit
Notes
MCK[n] cycle time, MCK[
n]/MCK[n] crossing
tMCK
3.75
6
ns
2
ADDR/CMD output setup with respect to MCK
533 MHz
400 MHz
333 MHz
tDDKHAS
1.48
1.95
2.40
ns
3
ADDR/CMD output hold with respect to MCK
533 MHz
400 MHz
333 MHz
tDDKHAX
1.48
1.95
2.40
ns
3
MCS[
n] output setup with respect to MCK
533 MHz
400 MHz
333 MHz
tDDKHCS
1.48
1.95
2.40
ns
3
MCS[
n] output hold with respect to MCK
533 MHz
400 MHz
333 MHz
tDDKHCX
1.48
1.95
2.40
ns
3
MCK to MDQS Skew
tDDKHMH
–0.6
0.6
ns
4
MDQ/MECC/MDM output setup with respect
to MDQS
533 MHz
400 MHz
333 MHz
tDDKHDS,
tDDKLDS
538
700
900
ps
5
MDQ/MECC/MDM output hold with respect to
MDQS
533 MHz
400 MHz
333 MHz
tDDKHDX,
tDDKLDX
538
700
900
ps
5
MDQS preamble start
tDDKHMP
–0.5
× tMCK – 0.6
–0.5
× tMCK + 0.6
ns
6
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