MCF5280CVF66J Freescale Semiconductor, MCF5280CVF66J Datasheet - Page 56
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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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ColdFire Core
The instruction fetch pipeline prefetches instructions from local memory using a two-stage structure. For
sequential prefetches, the next instruction address is generated by adding four to the last prefetch address.
This function is performed during the IAG stage and the resulting prefetch address gated onto the core bus
(if there are no pending operand memory accesses assigned a higher priority). After the prefetch address
is driven onto the core bus, the instruction fetch cycle accesses the appropriate local memory and returns
the instruction read data back to the IFP during the cycle. If the accessed data is not present in a local
memory (e.g., an instruction cache miss, or an external access cycle is required), the IFP is stalled in the
IC stage until the referenced data is available. As the prefetch data arrives in the IFP, it can be loaded into
the FIFO instruction buffer or gated directly into the OEP.
The V2 design uses a simple static conditional branch prediction algorithm (forward-assumed as
not-taken, backward-assumed as taken), and all change-of-flow operations are calculated by the OEP and
the target instruction address fed back to the IFP.
The IFP and OEP are decoupled by the FIFO instruction buffer, allowing instruction prefetching to occur
with the available core bus bandwidth not used for operand memory accesses. For the V2 design, the
instruction buffer contains three 32-bit locations.
Consider the operation of the OEP for three basic classes of non-branch instructions:
For simple register-to-register instructions, the first stage of the OEP performs the instruction decode and
fetching of the required register operands (OC) from the dual-ported register file, while the actual
2-10
•
•
•
Register-to-register:
Embedded load:
Register-to-memory (store)
Extension 1
Extension 2
Read Data
Core Bus
Opword
op
op
move
Figure 2-10. Version 2 ColdFire Processor Operand Execution Pipeline Diagram
Ry,Rx
<mem>y,Rx
Ry,<mem>x
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
RGF
DSOC
AGEX
Freescale Semiconductor
Core Bus
Address
Core Bus
Write Data
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