參數(shù)資料
型號(hào): MCIMX27VOP4A
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, MICROPROCESSOR, PBGA404
封裝: 17 X 17 MM, 0.65 MM PITCH, ROHS COMPLIANT, PLASTIC, MAPBGA-404
文件頁數(shù): 125/152頁
文件大?。?/td> 3889K
代理商: MCIMX27VOP4A
i.MX27 and i.MX27L Data Sheet, Rev. 1.6
74
Freescale Semiconductor
Electrical Characteristics
NOTE
SDR SDRAM CLK parameters are being measured from the 50%
point—that is, high is defined as 50% of signal value and low is defined as
50% of signal value. SD1 + SD2 does not exceed 7.5 ns for 133 MHz.
The timing parameters are similar to the ones used in SDRAM data
sheets—that is, Table 37 indicates SDRAM requirements. All output signals
are driven by the ESDCTL at the negative edge of SDCLK and the
parameters are measured at maximum memory frequency.
SD6
Address setup time
tAS
2.0
ns
SD7
Address hold time
tAH
1.8
ns
SD8
SDRAM access time
tAC
6.47
ns
SD9
Data out hold time1
tOH
1.8
ns
SD10
Active to read/write command period
tRC
10
clock
Note:
1 Timing parameters are relevant only to SDR SDRAM. For the specific DDR SDRAM data related timing parameters, see
Table 37. DDR/SDR SDRAM Read Cycle Timing Parameters (continued)
ID
Parameter
Symbol
Min
Max
Unit
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