MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 935

• 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

Freescale Semiconductor, Inc.
VDD5V_DROOP
DCDC_4P2_BO
VDD5V_FAULT
VBUSVALID0
SESSEND0_
VDD5V_GT_
SESSEND0
VDDIO_BO
CHRGSTS
VDDD_BO
VDDA_BO
BATT_BO
BVALID0
AVALID0
STATUS
DC_OK
VDDIO
Field
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Session End for USB OTG. This bit is a read only version of the state of the analog signal. It can not be
overwritten by software like the SESSEND bit below. NOTE: This bit's default value depends on whether
VDD5V is present, 0 if VDD5V presents, 1 if VDD5V not presents.
Output of battery brownout comparator.
Battery charging fault status. If the battery charger is not powered down, the bit is high when the 5V supply
falls below the battery voltage. If the charger is powered down, the bit asserts high when 5V falls to below
roughly VDDIO/2. If the charger is not powered down, the bit is sticky and remains set until the
PWD_CHARGE_4P2 bit is cycled. Otherwise, the bit is cleared when 5V is restored. NOTE: The default
value depends on whether VDD5V is present, 0 if 5V presents, 1 if 5V not presents.
Battery charging status. High during Li-Ion battery charge until the charging current falls below the
STOP_ILIMIT threshold.
Output of the brownout comparator on the DCDC_4P2 pin.
High when switching DC-DC converter control loop has stabilized after a voltage target change. When linear
regulators are active, this bit goes high when the actual voltage is above the target voltage. Therefore,
DC_OK will go high when changing a linear regulator output to a lower value before the actual voltage
decreases to the new target value.
Output of VDDIO brownout comparator. High when a brownout is detected. This comparator defaults powered
up, but can be powered down through the POWER_MINPWR register.
Output of VDDA brownout comparator. High when a brownout is detected. It is not possible to power-down
this comparator.
Output of VDDD brownout comparator. High when a brownout is detected. It is not possible to power-down
this comparator.
Indicates the voltage on the VDD5V pin is higher than VDDIO by a Vt voltage, nominally 500 mV.
Indicates the voltage on the VDD5V pin is below the VBUSDROOP_TRSH defined in the 5VCTRL register.
Indicates VBus is above the VA_SESS_VLD threshold, that is, high if VBus greater than 2.0, low if VBus
less than 0.8, otherwise unknown.
Indicates VBus is above the VB_SESS_VLD threshold, high if VBus greater than 4.0, low if VBus less than
0.8, otherwise unknown.
Accurate detection of the presence of 5v power. This can be used for detection of 5v in all modes of operation
including USB OTG. See POWER_5VCTRL to enable and set threshold for comparison.
Indicates VBus is below the VB_SESS_END threshold, that is, 0 if VBus is greater than 0.8 V, 1 if VBus is
less than 0.2 V, otherwise unknown. See POWER_5VCTRL to enable comparators. NOTE: This bit's default
value depends on whether VDD5V is present, 0 if VDD5V presents, 1 if VDD5V not presents.
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
HW_POWER_STS field descriptions (continued)
Description
Chapter 11 Power Supply
935