MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 7
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MCIMX281AVM4B
Manufacturer Part Number
MCIMX281AVM4B
Description
IC MPU I.MX28 1.2 289MAPBGA
Manufacturer
Freescale Semiconductor
Series
i.MX28r
Datasheets
1.MCIMX283DVM4B.pdf
(2327 pages)
2.MCIMX283DVM4B.pdf
(20 pages)
3.MCIMX281AVM4B.pdf
(72 pages)
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
5
5.1
Freescale Semiconductor
•
•
DRAM Memory
Each i.MX28 EMI supply pin and DRAM memory supply pin must have its own via. The via must
connect to a broad power plane which has (if possible) capacitors for each via. The more capacitors
the better.
One of the most critical issues is not the signal timing. It is power and/or GND bounce or noise due
to poorly supplied i.MX DRAM supply pins and/or DRAM memory supply pins. Something as
simple as the layout engineer using too few vias to connect the supply pins may cause the DRAM
memory interface to fail.
DRAM supply de-coupling
i.MX28 Layout and Design Guidelines, Rev. 0
DRAM Memory
7