参数资料
型号: MCIMX357DVM5BR2
厂商: Freescale Semiconductor
文件页数: 92/147页
文件大小: 0K
描述: IC MPU I.MX35 400MAPBGA
标准包装: 1,000
系列: i.MX35
核心处理器: ARM11
芯体尺寸: 32-位
速度: 532MHz
连通性: 1 线,CAN,EBI/EMI,以太网,I²C,MMC,SPI,SSI,UART/USART,USB OTG
外围设备: DMA,I²S,LCD,POR,PWM,WDT
输入/输出数: 96
程序存储器类型: ROMless
RAM 容量: 128K x 8
电压 - 电源 (Vcc/Vdd): 1.33 V ~ 1.47 V
振荡器型: 外部
工作温度: -20°C ~ 70°C
封装/外壳: 400-LFBGA
包装: 带卷 (TR)
i.MX35 Applications Processors for Industrial and Consumer Products, Rev. 10
Freescale Semiconductor
49
NOTE
SDR SDRAM CLK parameters are measured from the 50% point—that is,
“high” is defined as 50% of signal value and “low” is defined as 50% of
signal value.
The timing parameters are similar to the ones used in SDRAM data sheets.
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.
Figure 30. SDRAM Self-Refresh Cycle Timing Diagram
SD7
Address hold time
tAH
1.8
ns
SD10
Precharge cycle period1
tRP
1
4
clock
SD11
Auto precharge command period1
tRC
2
20
clock
1 SD10 and SD11 are determined by SDRAM controller register settings.
Table 37. SDRAM Refresh Timing Parameters (continued)
ID
Parameter
Symbol
Min.
Max.
Unit
SDCLK
CS
CAS
RAS
ADDR
BA
WE
CKE
Don’t care
SD16
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