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| 型號： | MCIMX281AVM4B |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 454 MHz, RISC PROCESSOR, PBGA289 |
| 封裝： | 14 X 14 MM, 0.80 MM PITCH, ROHS COMPLIANT, PLASTIC, MAPBGA-289 |
| 文件頁數(shù)： | 6/72頁 |
| 文件大?。?/td> | 915K |
| 代理商： | MCIMX281AVM4B |
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i.MX28 Applications Processors Data Sheet for Automotive Products, Rev. 1
14
Freescale Semiconductor
Table 10 provides the recommended analog operating conditions.
Table 11 shows the PSWITCH input characteristics. See the reference schematics for the recommended
PSWITCH button circuitry.
Table 12 shows the power consumption.
Table 13 illustrates the power supply characteristics.
2 Maximum Ambient Operating Temperature may be limited due to on-chip power dissipation. T
A (MAX) ≤ TJ - (ΘJA x PD) where:
TJ = Maximum Junction Temperature
Θ
JA = Package Thermal Resistance. See Section 3.2, “Thermal Characteristics.”
PD = Total On-chip Power Dissipation =PVDD4P2 + PBatteryCharger + PDCDC + PLinearRegulators + PInternal. Depending
on the application, some of these power dissipation terms may not apply.
PVDD4P2 = VDD4P2 On-Chip Power Dissipation = (VDD5V - VDD4P2) x IDD4P2
PBatteryCharger = Battery Charger On-Chip Power Dissipation = (VDD5V - BATT) x ICHARGE
PDCDC = DC-DC Converter On-Chip Power Dissipation = (BATT x DCDC Input Current) x (1 - efficiency)
PLinearRegulators = Linear Regulator On-Chip Power Dissipation = (VDD5V - VDDIO) x (IDDIO + IDDA + IDDD + IDD1P5)
+ (VDDIO - VDDA) x (IDDA + IDDD) + (VDDA - VDDD) x IDDD + (VDDA - VDD1P5) x IDD1P5
PInternal = Internal Digital On-Chip Power Dissipation = ~VDDD x IDDD
Table 10. Recommended Analog Operating Conditions
Parameter
Min
Typ
Max
Units
Low Resolution ADC Input Impedance (CH0 - CH5)
>1
—
M
Ω
Table 11. PSWITCH Input Characteristics
Parameter
HW_PWR_STS_PSWITCH
Min
Max
Units
PSWITCH LOW LEVEL
0x00
0.00
0.30
V
PSWITCH MID LEVEL & STARTUP1
1 A MID LEVEL PSWITCH state can be generated by connecting the VDDXTAL output of the SOC to PSWITCH through a
switch.
0x01
0.65
1.50
V
PSWITCH HIGH LEVEL2
2 PSWITCH acts like a high impedance input (>300 k
Ω) when the voltage applied to it is less than 1.5V. However, above 1.5V
it becomes lower impedance. To simplify design, it is recommended that a 10 k
Ω resistor to VDDIO be applied to PSWITCH
to set the HIGH LEVEL state (the PSWITCH input can tolerate voltages greater than 2.45 V as long as there is a 10 k
Ω resistor
in series to limit the current).
0x11
(1.1 * VDDXTAL) +
0.58
2.45
V
Table 12. Power Consumption
Parameter
Min
Typ
Max
Units
Power Consumption: Conditions - TBD
—
TBD
—
mW
Table 13. Power Supply Characteristics
Parameter
Min
Typ
Max
Units
Linear Regulators
Output Voltage Accuracy (VDDIO, VDDA, VDDM, VDDD)
1
–3
—
+3
%
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