MCIMX257DVM4 Freescale Semiconductor, MCIMX257DVM4 Datasheet - Page 99
MCIMX257DVM4
Manufacturer Part Number
MCIMX257DVM4
Description
IC MPU I.MX25 COMM 400MAPBGA
Manufacturer
Freescale Semiconductor
Series
i.MX25r
Datasheet
1.MCIMX257CJM4.pdf
(154 pages)
Specifications of MCIMX257DVM4
Core Processor
ARM9
Core Size
32-Bit
Speed
400MHz
Connectivity
1-Wire, CAN, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
Peripherals
DMA, I²S, LCD, POR, PWM, WDT
Number Of I /o
128
Program Memory Type
External Program Memory
Ram Size
144K x 8
Voltage - Supply (vcc/vdd)
1.15 V ~ 1.52 V
Data Converters
A/D 3x12b
Oscillator Type
External
Operating Temperature
-20°C ~ 70°C
Package / Case
400-LFBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCIMX257DVM4
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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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. 8
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
99
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