參數(shù)資料
型號: MCIMX258CVM4
廠商: Freescale Semiconductor
文件頁數(shù): 123/153頁
文件大?。?/td> 0K
描述: IC MPU I.MX25 IND 400MAPBGA
標(biāo)準(zhǔn)包裝: 90
系列: i.MX25
核心處理器: ARM9
芯體尺寸: 32-位
速度: 400MHz
連通性: 1 線,CAN,EBI/EMI,以太網(wǎng),I²C,MMC,智能卡,SPI,SSI,UART/USART,USB OTG
外圍設(shè)備: DMA,I²S,LCD,POR,PWM,WDT
輸入/輸出數(shù): 128
程序存儲器類型: 外部程序存儲器
RAM 容量: 144K x 8
電壓 - 電源 (Vcc/Vdd): 1.15 V ~ 1.52 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 3x12b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 400-LFBGA
包裝: 托盤
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 10
Freescale Semiconductor
71
Figure 39 through Figure 44 give examples of basic WEIM accesses to external memory devices with the
timing parameters described in Table 56 for specific control parameter settings.
Figure 39. Synchronous Memory Timing Diagram for Read Access—WSC=1
Figure 40. Synchronous Memory Timing Diagram for Write Access—
WSC=1, EBWA=1, EBWN=1, LBN=1
Last Valid Address
V1
BCLK
ADDR
DATA
RW
LBA
OE
EB[y]
CS[x]
Next Address
WE4
WE5
WE6
WE7
WE10
WE11
WE13
WE12
WE14
WE15
WE19
WE21
Last Valid Address
V1
BCLK
ADDR
DATA
RW
LBA
OE
EB[y]
CS[x]
Next Address
WE4
WE5
WE6
WE7
WE8
WE9
WE12
WE13
WE14
WE15
WE16
WE17
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