参数资料
型号: MCIMX31VMN5CR2
厂商: Freescale Semiconductor
文件页数: 116/122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
93
4.3.20.3
Power Down Sequence
Power down sequence for SIM interface is as follows:
1. SIMPD port detects the removal of the SIM Card
2. RST goes Low
3. CLK goes Low
4. TX goes Low
5. VEN goes Low
Each of this steps is done in one CKIL period (usually 32 kHz). Power down can be started because of a
SIM Card removal detection or launched by the processor. Figure 76 and Table 58 show the usual timing
requirements for this sequence, with Fckil = CKIL frequency value.
Figure 76. SmartCard Interface Power Down AC Timing
Table 58. Timing Requirements for Power Down Sequence
Num
Description
Symbol
Min
Max
Unit
1
SIM reset to SIM clock stop
Srst2clk
0.9*1/FCKIL
0.8
s
2
SIM reset to SIM TX data low
Srst2dat
1.8*1/FCKIL
1.2
s
3
SIM reset to SIM Voltage Enable Low
Srst2ven
2.7*1/FCKIL
1.8
s
4
SIM Presence Detect to SIM reset Low
Spd2rst
0.9*1/FCKIL
25
ns
SIMPD
RST
CLK
DATA_TX
SVEN
Srst2clk
Srst2dat
Srst2ven
Spd2rst
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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