MCF5282CVM66 Freescale, MCF5282CVM66 Datasheet - Page 366
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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Programmable Interrupt Timers (PIT0–PIT3)
19.3
This section describes the PIT functional operation.
19.3.1
This mode of operation is selected when the RLD bit in the PCSR register is set.
When PIT counter reaches a count of 0x0000, PIF flag is set in PCSRn. The value in the modulus register
loads into the counter, and the counter begins decrementing toward 0x0000. If the PCSRn[PIE] bit is set,
the PIF flag issues an interrupt request to the CPU.
When the PCSRn[OVW] bit is set, the counter can be directly initialized by writing to PMRn without
having to wait for the count to reach 0x0000.
19.3.2
This mode of operation is selected when the PCSRn[RLD] bit is clear. In this mode, the counter rolls over
from 0x0000 to 0xFFFF without reloading from the modulus latch and continues to decrement.
When the counter reaches a count of 0x0000, PCSRn[PIF] flag is set. If the PCSRn[PIE] bit is set, PIF flag
issues an interrupt request to the CPU.
19-6
IPSBAR
Offset:
Field
15–0
Reset
PC
PIT Clock
Modulus
Counter
W
R
0x15_0004 (PCNTR0)
0x16_0004 (PCNTR1)
0x17_0004 (PCNTR2)
0x18_0004 (PCNTR3)
Counter value. Reading this field with two 8-bit reads is not guaranteed coherent. Writing to PCNTRn has no effect,
and write cycles are terminated normally.
PIF
Functional Description
15
1
Set-and-Forget Timer Operation
Free-Running Timer Operation
14
1
13
1
0x0002
Figure 19-5. Counter Reloading from the Modulus Latch
12
1
Figure 19-4. PIT Count Register (PCNTRn)
Table 19-5. PCNTRn Field Descriptions
11
1
10
1
0x0001
1
9
Description
1
8
0x0005
PC
1
7
1
6
0x0000
1
5
4
1
1
3
Freescale Semiconductor
Access: User read only
0x0005
1
2
1
1
1
0
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