參數(shù)資料
型號: MCIMX258CJM4
廠商: Freescale Semiconductor
文件頁數(shù): 137/153頁
文件大?。?/td> 0K
描述: MPU IMX25 IND 400-MAPBGA
特色產(chǎn)品: MCIMX25 Applications Processors
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
84
Freescale Semiconductor
Figure 54. eSDHCv2 Timing
Table 61. eSDHCv2 Interface Timing Specification
ID
Parameter
Symbols
Min.
Max.
Unit
Card Input Clock
SD1
Clock frequency (low speed)
fPP
1
1 In low-speed mode, card clock must be lower than 400 kHz, voltage ranges from 2.7 to 3.6 V.
0400
kHz
Clock frequency (SD/SDIO full speed/high speed)
fPP
2
2 In normal-speed mode for SD/SDIO card, clock frequency can be any value between 0 ~ 25 MHz. In high speed mode, clock
frequency can be any value between 0 ~ 50 MHz.
0
25/50
MHz
Clock frequency (MMC full speed/high speed)
fPP
3
3 In normal-speed mode for MMC card, clock frequency can be any value between 0 ~ 20 MHz. In high speed mode, clock
frequency can be any value between 0 ~ 52 MHz.
0
20/52
MHz
Clock frequency (identification mode)
fOD
100
400
kHz
SD2
Clock low time
tWL
6.5
ns
SD3
Clock high time
tWH
6.5
ns
SD4
Clock rise time
tTLH
—3
ns
SD5
Clock fall time
tTHL
—3
ns
eSDHC Output / Card Inputs CMD, DAT (Reference to CLK)
SD6
eSDHC output delay
tOD
–33ns
eSDHC Input / Card Outputs CMD, DAT (Reference to CLK)
SD7
eSDHC input setup time
tISU
2.5
ns
SD8
eSDHC input hold time
tIH
4
4 To satisfy hold timing, the delay difference between clock input and cmd/data input must not exceed 2 ns.
2.5
ns
SD1
SD3
SD5
SD4
SD7
CMD
output from eSDHCv2 to card
DAT1
......
DAT7
DAT0
CMD
input from card to eSDHCv2
DAT1
......
DAT3
DAT0
CLK
SD2
SD8
SD6
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