MCF5282CVM66 Freescale, MCF5282CVM66 Datasheet - Page 153
MCF5282CVM66
Manufacturer Part Number
MCF5282CVM66
Description
Manufacturer
Freescale
Datasheet
1.MCF5282CVM66.pdf
(766 pages)
Specifications of MCF5282CVM66
Cpu Family
MCF528x
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
66MHz
Interface Type
CAN/I2C/QSPI/UART
Total Internal Ram Size
64KB
# I/os (max)
150
Number Of Timers - General Purpose
12
Operating Supply Voltage (typ)
3.3V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
256
Package Type
MA-BGA
Program Memory Type
Flash
Program Memory Size
512KB
Lead Free Status / RoHS Status
Compliant
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Chapter 8
System Control Module (SCM)
This section details the functionality of the System Control Module (SCM) which provides the
programming model for the System Access Control Unit (SACU), the system bus arbiter, a 32-bit core
watchdog timer (CWT), and the system control registers and logic. Specifically, the system control
includes the internal peripheral system (IPS) base address register (IPSBAR), the processor’s dual-port
RAM base address register (RAMBAR), and system control registers that include the core watchdog timer
control.
8.1
The SCM provides the control and status for a variety of functions including base addressing and address
space masking for both the IPS peripherals and resources (IPSBAR) and the ColdFire core memory spaces
(RAMBAR). The CPU core supports two memory banks, one for the internal SRAM and the other for the
internal Flash.
The SACU provides the mechanism needed to implement secure bus transactions to the system address
space.
The programming model for the system bus arbitration resides in the SCM. The SCM sources the
necessary control signals to the arbiter for bus master management.
The CWT provides a means of preventing system lockup due to uncontrolled software loops via a special
software service sequence. If periodic software servicing action does not occur, the CWT times out with a
programmed response (interrupt) to allow recovery or corrective action to be taken.
8.2
The SCM includes these distinctive features:
Freescale Semiconductor
•
•
•
•
•
IPS base address register (IPSBAR)
— Base address location for 1-Gbyte peripheral space
— User control bits
Processor-local memory base address register (RAMBAR)
System control registers
— Core reset status register (CRSR) indicates type of last reset
— Core watchdog control register (CWCR) for watchdog timer control
— Core watchdog service register (CWSR) to service watchdog timer
System bus master arbitration programming model (MPARK)
System access control unit (SACU) programming model
— Master privilege register (MPR)
— Peripheral access control registers (PACRs)
— Grouped peripheral access control registers (GPACR0, GPACR1)
Overview
Features
8-1
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