参数资料
型号: MCIMX537CVV8C
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 800 MHz, RISC PROCESSOR, PBGA529
封装: 19 X 19 MM, 0.80 MM PITCH, ROHS COMPLIANT, PLASTIC, TEPBGA-529
文件页数: 135/172页
文件大小: 4562K
代理商: MCIMX537CVV8C
Electrical Characteristics
i.MX53 Applications Processors for Industrial Products, Rev. 3
Freescale Semiconductor
65
Figure 30 and Table 42 show the data write timing parameters.
Figure 30. DDR SDRAM Data Write Cycle
Figure 31 and Table 43 show the data read timing parameters.
Table 42. DDR SDRAM Write Cycle 1 2 3
1 All timings are refer to Vref level cross point.
2
Reference load model is 25 ohm resistor from each of the DDR outputs to VDD_REF.
3 To receive the reported setup and hold values, write calibration should be performed in order to locate the DQS in the middle
of DQ window.
ID
Parameter
Symbol
SDCLK = 400 MHz
Unit
Min
Max
DDR17
DQ and DQM setup time to DQS (differential strobe)
tDS
0.285
ns
DDR18
DQ and DQM hold time to DQS (differential strobe)
tDH
0.285
ns
DDR21
DQS latching rising transitions to associated clock edges
tDQSS
-0.25
+0.25
tCK
DDR22
DQS high level width
tDQSH
0.45
0.55
tCK
DDR23
DQS low level width
tDQSL
0.45
0.55
tCK
SDCLK
SDCLK_B
DQS (output)
DQ (output)
DQM (output)
Data
DM
DDR17
DDR18
DDR21
DDR23
DDR22
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