參數(shù)資料
型號(hào): MCF54418CMJ250
廠商: Freescale Semiconductor
文件頁數(shù): 32/61頁
文件大?。?/td> 0K
描述: IC MCU 32BIT 256MAPBGA
標(biāo)準(zhǔn)包裝: 450
系列: MCF5441x
核心處理器: Coldfire V4
芯體尺寸: 32-位
速度: 250MHz
連通性: 1 線,CAN,EBI/EMI,以太網(wǎng),I²C,智能卡,SPI,SSI,UART/USART,USB,USB OTG
外圍設(shè)備: DMA,PWM,WDT
輸入/輸出數(shù): 87
程序存儲(chǔ)器類型: ROMless
RAM 容量: 64K x 8
電壓 - 電源 (Vcc/Vdd): 1.14 V ~ 1.32 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x12b,D/A 2x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 256-LBGA
包裝: 托盤
MCF5441x ColdFire Microprocessor Data Sheet, Rev. 8
Electrical characteristics
Freescale Semiconductor
38
4.15.1
eSDHC timing specifications
Figure 20 depicts the timing of eSDHC, and Table 20 lists the eSDHC timing characteristics.
Figure 20. eSDHC timing
Table 20. eSDHC interface timing specifications
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.
0
400
kHz
Clock frequency (SD/SDIO full speed)
fPP
2
2 In normal data transfer mode for SD/SDIO card, clock frequency can be any value from 0 to 25 MHz.
040
MHz
Clock frequency (MMC full speed)
fPP
3
3 In normal data transfer mode for MMC card, clock frequency can be any value from 0 to 20 MHz.
020
MHz
Clock frequency (identification mode)
fOD
4
4 In card identification mode, card clock must be 100 kHz– 400 kHz, voltage ranges from 2.7 to 3.6 V.
100
400
kHz
SD2
Clock low time
tWL
7—
ns
SD3
Clock high time
tWH
7—
ns
SD4
Clock rise time
tTLH
—3
ns
SD5
Clock fall time
tTHL
—3
ns
eSDHC Output / card inputs SDHC_CMD, SDHC_DAT (reference to SDHC_CLK)
SD6
eSDHC output delay (output valid)
tOD
–5
5
ns
eSDHC Input / card outputs SDHC_CMD, SDHC_DAT (reference to SDHC_CLK)
SD7
eSDHC input setup time
tISU
5—
ns
SD8
eSDHC input hold time
tIH
0—
ns
SD1
SD3
SD5
SD4
SD7
SDHC_CMD
Output from eSDHC to card
SDHC_DAT[3:0]
SDHC_CMD
Input from card to eSDHC
SDHC_DAT[3:0]
SDHC_CLK
SD2
SD8
SD6
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