MCF5282CVF66J Freescale Semiconductor, MCF5282CVF66J Datasheet - Page 557
MCF5282CVF66J
Manufacturer Part Number
MCF5282CVF66J
Description
IC MPU 512K FLASH 256MAPBGA
Manufacturer
Freescale Semiconductor
Series
MCF528xr
Datasheet
1.MCF5216CVM66J.pdf
(766 pages)
Specifications of MCF5282CVF66J
Core Processor
Coldfire V2
Core Size
32-Bit
Speed
66MHz
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:
MCF5282CVF66J
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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A queue is in the active state when a valid queue operating mode is selected, when the selected trigger
event has occurred, or when the QADC is performing a conversion specified by a CCW from that queue.
Only one queue can be active at a time.
One or both queues can be in the paused state. A queue is paused when the previous CCW executed from
that queue had the pause bit set. The QADC does not execute any CCWs from the paused queue until a
trigger event occurs. Consequently, the QADC can service queue 2 while queue 1 is paused.
Only queue 2 can be in the suspended state. When a trigger event occurs on queue 1 while queue 2 is
executing, the current queue 2 conversion is aborted and the queue 2 status is reported as suspended. Queue
2 transitions back to the active state when queue 1 becomes idle or paused.
A trigger pending state is required because both queues cannot be active at the same time. The status of
queue 2 is changed to trigger pending when a trigger event occurs for queue 2 while queue 1 is active. In
the opposite case, when a trigger event occurs for queue 1 while queue 2 is active, queue 2 is aborted and
the status is reported as queue 1 active, queue 2 suspended. So due to the priority scheme, only queue 2
can be in the trigger pending state.
Two transition cases cause the queue 2 status to be trigger pending before queue 2 is shown to be in the
active state. When queue 1 is active and there is a trigger pending on queue 2, after queue 1 completes or
pauses, queue 2 continues to be in the trigger pending state for a few clock cycles. The fleeting status
conditions are:
Figure 28-12
queue 1 active to queue 2 active.
When a queue enters the paused state, CWP points to the CCW with the pause bit set. While in pause, the
CWP value is maintained until a trigger event occurs on either queue. Usually, the CWP is updated a few
clock cycles before the queue status field shows that the queue has become active. For example, a read of
CWP may point to a CCW in queue 2, while the queue status field shows queue 1 paused and queue 2
trigger pending.
When the QADC finishes a queue scan, the CWP points to the CCW where the end-of-queue condition
was detected. Therefore, when the end-of-queue condition is a CCW with the EOQ code (channel 63), the
CWP points to the CCW containing the EOQ.
When the last CCW in a queue is the last CCW table location (CCW63), and it does not contain the EOQ
code, the end-of-queue is detected when the following CCW is read, so the CWP points to word CCW0.
Finally, when queue 1 operation is terminated after a CCW is read that is pointed to by BQ2, the CWP
points to the same CCW as BQ2.
Freescale Semiconductor
•
•
Queue 1 idle with queue 2 trigger pending
Queue 1 paused with queue 2 trigger pending
Reset
R/W:
Field
displays the status conditions of the QS field as the QADC goes through the transition from
CF1
15
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
PF1
14
CF2
13
R/W
PF2
12
0000_0000
TOR1
11
TOR2
Queued Analog-to-Digital Converter (QADC)
10
QS9
9
R
QS8
8
28-19
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