MCF5282CVF80J Freescale Semiconductor, MCF5282CVF80J Datasheet - Page 163
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MCF5282CVF80J
Manufacturer Part Number
MCF5282CVF80J
Description
IC MPU 512K FLASH 256MAPBGA
Manufacturer
Freescale Semiconductor
Series
MCF528xr
Datasheet
1.MCF5216CVM66J.pdf
(766 pages)
Specifications of MCF5282CVF80J
Core Processor
Coldfire V2
Core Size
32-Bit
Speed
80MHz
Connectivity
CAN, EBI/EMI, Ethernet, I²C, SPI, UART/USART
Peripherals
DMA, LVD, POR, PWM, WDT
Number Of I /o
150
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
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
-
Lead Free Status / Rohs Status
No
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCF5282CVF80J
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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The initial state of the master priorities is M3 > M2 > M1 > M0. System software should guarantee that
the programmed Mn_PRTY fields are unique, otherwise the hardware defaults to the initial-state priorities.
8.6
This section details the functionality of the System Access Control Unit (SACU) which provides the
mechanism needed to implement secure bus transactions to the address space mapped to the internal
modules.
8.6.1
The SACU supports the traditional model of two privilege levels: supervisor and user. Typically, memory
references with the supervisor attribute have total accessibility to all the resources in the system, while user
mode references cannot access system control and configuration registers. In many systems, the operating
system executes in supervisor mode, while application software executes in user mode.
The SACU further partitions the access control functions into two parts: one control register defines the
privilege level associated with each bus master, and another set of control registers define the access levels
associated with the peripheral modules and the memory space.
The SACU’s programming model is physically implemented as part of the System Control Module (SCM)
with the actual access control logic included as part of the arbitration controller. Each bus transaction
targeted for the IPS space is first checked to see if its privilege rights allow access to the given memory
space. If the privilege rights are correct, the access proceeds on the bus. If the privilege rights are
insufficient for the targeted memory space, the transfer is immediately aborted and terminated with an
exception, and the targeted module not accessed.
Freescale Semiconductor
11–8
Bits
7–0
14
13
12
System Access Control Unit (SACU)
Overview
LCKOUT_TIME Lock-out Time. Lock-out time for a master being denied the bus.
TIMEOUT
PRKLAST
The M1_PRTY field should not be set for a priority higher than third
(default).
FIXED
Name
—
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
Fixed or round robin arbitration
0 round robin arbitration
1 fixed arbitration
Timeout Enable
0 disable count for when a master is locked out by other masters.
1 enable count for when a master is locked out by other masters and allow access when
Park on the last active master or highest priority master if no masters are active
0 park on last active master
1 park on highest priority master
The lock out time is defined as 2^ LCKOUT_TIME[3:0].
Reserved, should be cleared.
LCKOUT_TIME is reached.
Table 8-6. MPARK Field Description (continued)
NOTE
Description
System Control Module (SCM)
8-11
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