MCF5282CVM66 Freescale, MCF5282CVM66 Datasheet - Page 592
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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Queued Analog-to-Digital Converter (QADC)
To prepare the QADC for a scan sequence, write to the CCW table to specify the desired channel
conversions. The criteria for queue execution is established by selecting the queue operating mode. The
queue operating mode determines what type of trigger event starts queue execution. A trigger event refers
to any of the ways that cause the QADC to begin executing the CCWs in a queue or subqueue. An external
trigger is only one of the possible trigger events.
A scan sequence may be initiated by:
The queue can be scanned in single pass or continuous fashion. When a single-scan mode is selected, the
scan must be engaged by setting the single-scan enable bit. When a continuous-scan mode is selected, the
queue remains active in the selected queue operating mode after the QADC completes each queue scan
sequence.
During queue execution, the QADC reads each CCW from the active queue and executes conversions in
three stages:
28-54
•
•
•
•
•
•
A software command
Expiration of the periodic/interval timer
An external trigger signal
An external gated signal (queue 1 only)
Initial sample
Final sample
00
63
P — Pause after Conversion
BYP — Bypass Buffer Amplifier
IST — Input Sample Time
CHAN — Channel Number and
Conversion Command
Beginning of Queue 1
Beginning of Queue 2
P
9
Word (CCW) Table
End of Queue 1
End of Queue 2
10-bit Conversion Command
until Next Trigger
BYP
8
Figure 28-43. QADC Conversion Queue Operation
End-of-Queue Code
•
•
•
•
•
•
Word Format
[7:6]
IST
CHAN
[5:0]
Channel Select,
A/D Conversion
Sample, Hold,
15 14 13 12 11 10
S
0
0 0 0 0 0
Right-Justified, Unsigned Result
Left-Justified, Unsigned Result
Left-Justified, Signed Result
RESULT
10-bit Result, Readable in
[15:6]
RESULT
[15:6]
Three 16-BIT Formats
Result Word Table
0
0
RESULT
0 0 0 0 0
0 0 0 0 0
[9:0]
•
•
•
•
•
•
[5:0]
[5:0]
Freescale Semiconductor
00
63
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