MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1079
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
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open, then the current transaction will be interrupted at the next natural burst boundary of
the DRAM device. If the page is not currently open, then the new request will be placed at
the top of the command queue while its page is prepared.
There are a fixed number of latency cycles in the memory controller, based on the pipeline
through the memory controller logic. These steps are:
For asynchronous AXI interfaces, an additional 4–5 cycles are included for the round-trip
transaction to synchronize to the EMI_CLK.
Freescale Semiconductor, Inc.
1. Command passing through the port interface. (fixed)
2. Arbitration through the Arbiter. (fixed)
3. Placement into the Command Queue. (fixed)
4. Memory Command Generation. (variable)
5. Sending of control signals from the core logic to flip-flops near the I/O drivers. (fixed)
6. Flight time to the DRAM device. (variable)
7. Flight time from the DRAM device. (variable)
8. For reads, synchronization of read data from the data strobe domain. (fixed)
9. For reads, data pass through the port interface. (fixed)
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
Chapter 14 External Memory Interface (EMI)
1079
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