參數(shù)資料
型號： MCIMX258CJM4A
廠商： Freescale Semiconductor
文件頁數(shù)： 63/153頁
文件大小： 0K
描述： IC MPU IMX25 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
Freescale Semiconductor
17
NOTE
The user is advised to connect FUSEVDD to GND except when fuses
are programmed, to prevent unintentional blowing of fuses.
Other power-up sequences may be possible; however, the above
sequence has been verified and is recommended.
There is a 1 ms minimum time between supplies coming up, and a 1 ms
minimum time between POR_B assert and de-assert.
The dV/dT should be no faster than 0.25 V/
μs for all power supplies, to
avoid triggering ESD circuit.
Figure 2 shows the power-up sequence diagram. After POR_B is asserted, Core VDD and NVDDx can be
powered up. After Core VDD and NVDDx are stable, the analog supplies can be powered up.
Figure 2. Power-Up Sequence Diagram
3.2.2
Power-Down Sequence
There are no special requirements for the power-down sequence. All power supplies can be shut down at
the same time.
3.2.3
SRTC DryIce Power-Up/Down Sequence
In order to guarantee DryIce power-loss protection, including retention of SRTC time data during power
down, users must do the following:
Place a proper capacitor on the NVCC_DRYICE output pin, and
Implement the below power-up/down sequence
1. Assert power on reset (POR).
2. Turn on NVCC_CRM.
3. Turn on QVDD digital logic domain supplies for not less than 1 ms and not more than 32 ms, after
NVCC_CRM reaches 90% of 3.3 V.
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MCIMX258CVM4 功能描述:處理器 - 專門應(yīng)用 SENNA IMX25 1.1 INDUSTRIAL RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風格:SMD/SMT 封裝 / 箱體:MAPBGA-432
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