MCF5282CVF80J Freescale Semiconductor, MCF5282CVF80J Datasheet - Page 446
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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
- Current page: 446 of 766
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UART Modules
23.4.5
This section describes bus operation during read, write, and interrupt acknowledge cycles to the UART
module.
23.4.5.1
The UART module responds to reads with byte data. Reserved registers return zeros.
23.4.5.2
The UART module accepts write data as bytes only. Write cycles to read-only or reserved registers
complete normally without an error termination, but data is ignored.
23.5
The software flowchart,
23.5.1
23.5.1.1
The list below provides steps to properly initialize the UART to generate an interrupt request to the
processor’s interrupt controller. See
assignments for the UART modules.
23-26
•
•
•
1. Initialize the appropriate ICRx register in the interrupt controller.
2. Unmask appropriate bits in IMR in the interrupt controller.
UART module initialization—These routines consist of SINIT and CHCHK (See Sheet 1 p. 23-30
and Sheet 2 p. 23-31). Before SINIT is called at system initialization, the calling routine allocates
2 words on the system FIFO. On return to the calling routine, SINIT passes UART status data on
the FIFO. If SINIT finds no errors, the transmitter and receiver are enabled. SINIT calls CHCHK
to perform the checks. When called, SINIT places the UART in local loopback mode and checks
for the following errors:
— Transmitter never ready
— Receiver never ready
— Parity error
— Incorrect character received
I/O driver routine—This routine (See Sheet 4 p. 23-33 and Sheet 5 p. 23-34) consists of INCH, the
terminal input character routine which gets a character from the receiver, and OUTCH, which
sends a character to the transmitter.
Interrupt handling—This consists of SIRQ (See Sheet 4 p. 23-33), which is executed after the
UART module generates an interrupt caused by a change-in-break (beginning of a break). SIRQ
then clears the interrupt source, waits for the next change-in-break interrupt (end of break), clears
the interrupt source again, then returns from exception processing to the system monitor.
Initialization/Application Information
Bus Operation
Interrupt and DMA Request Initialization
Read Cycles
Write Cycles
Setting up the UART to Generate Core Interrupts
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
Figure
23-25, consists of:
Section 10.3.6.1, “Interrupt Sources,”
for details on interrupt
Freescale Semiconductor
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