MCF5280CVF66J Freescale Semiconductor, MCF5280CVF66J Datasheet - Page 275
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MCF5280CVF66J
Manufacturer Part Number
MCF5280CVF66J
Description
IC MPU RISC 66MHZ 256-MAPBGA
Manufacturer
Freescale Semiconductor
Series
MCF528xr
Datasheet
1.MCF5216CVM66J.pdf
(766 pages)
Specifications of MCF5280CVF66J
Core Processor
Coldfire V2
Core Size
32-Bit
Speed
66MHz
Connectivity
CAN, EBI/EMI, Ethernet, I²C, SPI, UART/USART
Peripherals
DMA, LVD, POR, PWM, WDT
Number Of I /o
150
Program Memory Type
ROMless
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
256-MAPBGA
Processor Series
MCF528x
Core
ColdFire V2
3rd Party Development Tools
JLINK-CF-BDM26, EWCF
Development Tools By Supplier
NNDK-MOD5282-KIT
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Lead Free Status / Rohs Status
No
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCF5280CVF66J
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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15.2
By running synchronously with the system clock, SDRAM can (after an initial latency period) be accessed
on every clock; 5-1-1-1 is a typical burst rate to the SDRAM. Unlike the MCF5272, this processor does
not have an independent SDRAM clock signal. For this processor, the timing of the SDRAM controller is
controlled by the CLKOUT signal.
Note that because the processor cannot have more than one page open at a time, it does not support
interleaving.
SDRAM controllers are more sophisticated than asynchronous DRAM controllers. Not only must they
manage addresses and data, but they must send special commands for such functions as precharge, read,
write, burst, auto-refresh, and various combinations of these functions.
commands.
SDRAMs operate differently than asynchronous DRAMs, particularly in the use of data pipelines and
commands to initiate special actions. Commands are issued to memory using specific encodings on
address and control pins. Soon after system reset, a command must be sent to the SDRAM mode register
to configure SDRAM operating parameters.
Freescale Semiconductor
Command
WRITE
SELFX
READ
ACTV
PALL
SELF
MRS
NOP
REF
SDRAM Controller Operation
Activate. Executed before
Mode register set.
No-op. Does not affect SDRAM state machine; DRAM controller control signals negated;
SDRAM_CS[1:0] asserted.
Precharge all. Precharges all internal banks of an SDRAM component; executed before new page is
opened.
Read access. SDRAM registers column address and decodes that a read access is occurring.
Refresh. Refreshes internal bank rows of an SDRAM component.
Self refresh. Refreshes internal bank rows of an SDRAM component when it is in low-power mode.
Exit self refresh. This command is sent to the DRAM controller when DCR[IS] is cleared.
Write access. SDRAM registers column address and decodes that a write access is occurring.
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
READ
Table 15-1. SDRAM Commands
or
WRITE
executes; SDRAM registers and decodes row address.
Definition
Table 15-1
Synchronous DRAM Controller Module
lists common SDRAM
15-3
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