MCF5282CVM66 Freescale, MCF5282CVM66 Datasheet - Page 437
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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23.4.1.1
As
The choice of DTIN or internal bus clock is programmed in the UCSR.
23.4.1.2
The following sections describe how to calculate baud rates.
23.4.1.2.1
When the internal bus clock is the UART clocking source, it goes through a divide-by-32 prescaler and
then passes through the 16-bit divider of the concatenated UBG1n and UBG2n registers. The baud-rate
calculation is:
Freescale Semiconductor
Figure 23-17
•
•
An external clock signal on the DTINn pin.
clock; when divided by 16, it is asynchronous.
The internal bus clock supplies an asynchronous clock source divided by 32 and then divided by
the 16-bit value programmed in UBG1n and UBG2n. See
Generator Registers
Programmable Divider
Calculating Baud Rates
DTOUTn
If DTINn is a clocking source for the timer or UART, that timer module
cannot use DTINn for timer input capture.
Internal Bus Clock Baud Rates
DTINn
UTXDn
URXDn
shows, the UARTn transmitter and receiver can use the following clock sources:
(UBG1n/UBG2n).”
UART
Rx Buffer
Tx Buffer
Figure 23-17. Clocking Source Diagram
Rx
Tx
Baudrate
Timer Module
On-Chip
Clocking sources programmed in UCSR
=
----------------------------------- -
[
32 x Divider
NOTE
When not divided,
f
sys
Divider
16-bit
÷ 16
÷ 1
]
Section 23.3.11, “UART Baud Rate
÷ 32
DTINn
TIN
TIN
provides a synchronous
Internal
Bus Clock
f
sys
UART Modules
Eqn. 23-1
23-17
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