MCIMX253DJM4 Freescale, MCIMX253DJM4 Datasheet - Page 99

• Manufacturer Part Number: MCIMX253DJM4
• Manufacturer: Freescale

Specifications of MCIMX253DJM4

• Operating Temperature (min): -20C
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

SIMx_DATAy_RX_TX
Table 76
3.7.14.2
Figure 71
requirements for parameters (SI7–SI10) shown in the figure.
The power-down sequence for the SIM interface is as follows:
Each of the above steps requires one CKIL period (usually 32 kHz). Power-down may be initiated by a
SIM card removal detection; or it may be launched by the processor.
Freescale Semiconductor
SIMx_SVENy
SIMx_RSTy
SIMx_CLKy
•
•
•
•
•
SIMx_SIMPDy port detects the removal of the SIM Card
SIMx_RSTy is negated
SIMx_CLKy is negated
SIMx_DATAy_RX_TX is negated
SIMx_SVENy is negated
defines the general timing requirements for the SIM interface.
Ref No.
shows the SIM interface power-down AC timing diagram.
1
2
3
SIM Power-Down Sequence
Table 76. Timing Specifications, Active-Low-Reset SIM Card Reset Sequence
T0
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 7
1
Figure 70. Active-Low-Reset SIM Card Reset Sequence
40,000
Min.
400
3
—
T1
40,000
Max.
200
—
2
Table 77
3
shows the timing
RESPONSE
clk cycles
clk cycles
clk cycles
Unit
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