参数资料
型号: MCIMX31VMN5CR2
厂商: Freescale Semiconductor
文件页数: 34/122页
文件大小: 0K
描述: IC MPU MAP I.MX31L 473-MAPBGA
标准包装: 750
系列: i.MX31
核心处理器: ARM11
芯体尺寸: 32-位
速度: 532MHz
连通性: 1 线,ATA,EBI/EMI,FIR,I²C,MMC/SD,PCMCIA,SIM,SPI,SSI,UART/USART,USB,USB OTG
外围设备: DMA,LCD,POR,PWM,WDT
程序存储器类型: ROMless
RAM 容量: 16K x 8
电压 - 电源 (Vcc/Vdd): 1.22 V ~ 3.3 V
振荡器型: 外部
工作温度: 0°C ~ 70°C
封装/外壳: 473-LFBGA
包装: 带卷 (TR)
Electrical Characteristics
MCIMX31/MCIMX31L Technical Data, Rev. 4.1
Freescale Semiconductor
19
4.2
Supply Power-Up/Power-Down Requirements and Restrictions
Any MCIMX31 board design must comply with the power-up and power-down sequence guidelines as
described in this section to guarantee reliable operation of the device. Any deviation from these sequences
may result in any or all of the following situations:
Cause excessive current during power up phase
Prevent the device from booting
Cause irreversible damage to the MCIMX31 (worst-case scenario)
4.2.1
Powering Up
The Power On Reset (POR) pin must be kept asserted (low) throughout the power up sequence. Power up
logic must guarantee that all power sources reach their target values prior to the release (de-assertion) of
POR. Figure 2 shows the power-up sequence for silicon Revisions 1.2 and previous. Figure 3 and Figure 4
show the power-up sequence for silicon Revision 2.0.
NOTE
Stages need to be performed in the order shown; however, within each stage,
supplies can be powered up in any order. For example, supplies IOQVDD,
NVCC1, and NVCC3 through NVCC10 do not need to be powered up in the
order shown.
CAUTION
NVCC6 and NVCC9 must be at the same voltage potential. These supplies
are connected together on-chip to optimize ESD damage immunity.
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
i.MX31
Product
Family
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