MCF5227x ColdFire Microprocessor Data Sheet, Rev. 8 Electrical Characteristics F" />
參數(shù)資料
型號(hào): M52277EVB
廠商: Freescale Semiconductor
文件頁(yè)數(shù): 21/46頁(yè)
文件大?。?/td> 0K
描述: BOARD DEMO FOR MCF5227
標(biāo)準(zhǔn)包裝: 1
系列: ColdFire®
類型: MCU
適用于相關(guān)產(chǎn)品: MCF52277
所含物品:
MCF5227x ColdFire Microprocessor Data Sheet, Rev. 8
Electrical Characteristics
Freescale Semiconductor
28
Figure 14. DDR Read Timing
Figure 15. SD_CLK and SD_CLK Crossover Timing
Table 16. DDR Clock Crossover Specifications
Symbol
Characteristic
Min
Max
Unit
VMP
Clock output mid-point voltage
1.05
1.45
V
VOUT
Clock output voltage level
–0.3
SD_VDD + 0.3
V
VID
Clock output differential voltage (peak to peak swing)
0.7
SD_VDD + 0.6
V
VIX
Clock crossing point voltage1
1 The clock crossover voltage is only guaranteed when using the highest drive strength option for the SDCLK[1:0] and
SDCLK[1:0] signals.
1.05
1.45
V
SD_CLK
SD_CSn,SD_WE,
SD_DQS3/SD_DQS2
D[31:24]/D[23:16]
A[13:0]
SD_RAS, SD_CAS
CMD
ROW
DD1
DD5
DD4
WD1WD2WD3WD4
SD_DQS3/SD_DQS2
DD9
SD_CLK
DD3
DD2
D[31:24]/D[23:16]
WD1
WD2
WD3
WD4
DD10
CL=2
CL=2.5
COL
DQS Read
Preamble
DQS Read
Postamble
DQS Read
Preamble
DQS Read
Postamble
CL
=
2
.5
CL
=
2
SD_CLK
VIX
VMP
VIX
VID
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