參數(shù)資料
型號: MCIMX258CVM4
廠商: Freescale Semiconductor
文件頁數(shù): 126/153頁
文件大?。?/td> 0K
描述: IC MPU I.MX25 IND 400MAPBGA
標準包裝: 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
74
Freescale Semiconductor
Figure 44. Muxed A/D Mode Timing Diagram for Synchronous Read Access—
WSC=7, LBA=1, LBN=1, LAH=1, OEA=7
Figure 45 through Figure 49, and Table 57 help to determine timing parameters relative to chip select (CS)
state for asynchronous and DTACK WEIM accesses with corresponding WEIM bit fields and the timing
parameters mentioned above.
Figure 45. Asynchronous Memory Read Access
BCLK
ADDR/
RW
LBA
OE
EB[y]
CS[x]
Address V1
Read Data
Last Valid Addr
M_DATA
WE5
WE6
WE7
WE14
WE15
WE10
WE11
WE12
WE13
WE18
WE20
WE4
Last Valid Address
Address V1
V1
ADDR
DATA
RW
LBA
OE
EB[y]
CS [x]
Next Address
WE39
WE35
WE37
WE32
WE36
WE38
WE43
WE40
WE31
WE44
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