參數(shù)資料
型號: MCIMX357DVM5BR2
廠商: Freescale Semiconductor
文件頁數(shù): 92/147頁
文件大?。?/td> 0K
描述: IC MPU I.MX35 400MAPBGA
標(biāo)準(zhǔn)包裝: 1,000
系列: i.MX35
核心處理器: ARM11
芯體尺寸: 32-位
速度: 532MHz
連通性: 1 線,CAN,EBI/EMI,以太網(wǎng),I²C,MMC,SPI,SSI,UART/USART,USB OTG
外圍設(shè)備: DMA,I²S,LCD,POR,PWM,WDT
輸入/輸出數(shù): 96
程序存儲器類型: ROMless
RAM 容量: 128K x 8
電壓 - 電源 (Vcc/Vdd): 1.33 V ~ 1.47 V
振蕩器型: 外部
工作溫度: -20°C ~ 70°C
封裝/外殼: 400-LFBGA
包裝: 帶卷 (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 “l(fā)ow” 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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