MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 14

• Manufacturer Part Number: MCIMX281AVM4B
• Description: IC MPU I.MX28 1.2 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

Specifications of MCIMX281AVM4B

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 454MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
• Peripherals: DMA, I²S, LCD, POR, PWM, WDT
• Program Memory Size: 128KB (32K x 32)
• Program Memory Type: Mask ROM
• Ram Size: 32K x 32
• Voltage - Supply (vcc/vdd): 1.25 V ~ 5.25 V
• Data Converters: A/D 17x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 289-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed

2
3
Table 10
Table 11
PSWITCH button circuitry.
1
2
Table 12
14
Low Resolution ADC Input Impedance (CH0 - CH5)
PSWITCH LOW LEVEL
PSWITCH MID LEVEL & STARTUP
PSWITCH HIGH LEVEL
Maximum Ambient Operating Temperature may be limited due to on-chip power dissipation. T
Assumes 6-layer PCB and still air. Actual thermal performance may vary based on board and enclosure composition and
design.
A MID LEVEL PSWITCH state can be generated by connecting the VDDXTAL output of the SOC to PSWITCH through a
switch.
PSWITCH acts like a high impedance input (>300 kΩ) 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 kΩ 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 kΩ resistor
in series to limit the current).
T
Θ
P
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) +
PInternal = Internal Digital On-Chip Power Dissipation = ~VDDD x IDDD
J
D
JA
= Maximum Junction Temperature
= Total On-chip Power Dissipation =PVDD4P2 + PBatteryCharger + PDCDC + PLinearRegulators + PInternal. Depending
on the application, some of these power dissipation terms may not apply.
(VDDIO - VDDA) x (IDDA + IDDD) + (VDDA - VDDD) x IDDD + (VDDA - VDD1P5) x IDD1P5
= Package Thermal Impedance
shows the PSWITCH input characteristics. See the reference schematics for the recommended
provides the recommended analog operating conditions.
shows the DC characteristics.
Power Dissipation: Conditions - TBD
Parameter
i.MX28 Applications Processors Data Sheet for Automotive Products, Rev. 0
2
Parameter
Parameter
Table 10. Recommended Analog Operating Conditions
1
Table 11. PSWITCH Input Characteristics
Table 12. DC Characteristics
HW_PWR_STS_PSWITCH
0x01
0x11
0x00
Min
—
Min
>1
(1.1 * VDDXTAL) +
TBD
Typ
Typ
—
A (MAX)
0.00
0.65
0.58
Min
Freescale Semiconductor
≤ T
J
Max
Max
- ( Θ
—
—
JA
Max
0.30
1.50
2.45
x P
D
Units
) where:
Units
MΩ
mW
Units
V
V
V