MCF5271CVM150J Freescale Semiconductor, MCF5271CVM150J Datasheet - Page 404
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MCF5271CVM150J
Manufacturer Part Number
MCF5271CVM150J
Description
IC MCU 166MHZ 256MAPBGA
Manufacturer
Freescale Semiconductor
Series
MCF527xr
Specifications of MCF5271CVM150J
Core Processor
Coldfire V2
Core Size
32-Bit
Speed
150MHz
Connectivity
EBI/EMI, Ethernet, I²C, SPI, UART/USART
Peripherals
DMA, WDT
Number Of I /o
97
Program Memory Type
ROMless
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
196-MAPBGA
Processor Series
MCF527x
Core
ColdFire V2
3rd Party Development Tools
JLINK-CF-BDM26, EWCF
Development Tools By Supplier
NNDK-MOD5272-KIT, NNDK-MOD5270-KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Lead Free Status / Rohs Status
Details
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Programmable Interrupt Timer Modules (PIT0–PIT3)
21-4
15–12
11–8
Bits
7
6
5
4
3
2
Name
DOZE
OVW
DBG
PRE
PIE
PIF
—
—
Reserved, should be cleared.
Prescaler. The read/write prescaler bits select the system clock divisor to generate the PIT
clock. To accurately predict the timing of the next count, change the PRE[3:0] bits only
when the enable bit (EN) is clear. Changing PRE[3:0] resets the prescaler counter. System
reset and the loading of a new value into the counter also reset the prescaler counter.
Setting the EN bit and writing to PRE[3:0] can be done in this same write cycle. Clearing
the EN bit stops the prescaler counter.
Reserved, should be cleared.
Doze mode bit. The read/write DOZE bit controls the function of the PIT in doze mode.
Reset clears DOZE.
0 PIT function not affected in doze mode
1 PIT function stopped in doze mode
When doze mode is exited, timer operation continues from the state it was in before
entering doze mode.
Debug mode bit. Controls the function of the PIT in debug mode. Reset clears DBG. During
debug mode, register read and write accesses function normally. When debug mode is
exited, timer operation continues from the state it was in before entering debug mode, but
any updates made in debug mode remain.
0 PIT function not affected in debug mode
1 PIT function stopped in debug mode
Note: Changing the DBG bit from 1 to 0 during debug mode starts the PIT timer. Likewise,
Overwrite. Enables writing to PMRn to immediately overwrite the value in the PIT counter.
0 Value in PMRn replaces value in PIT counter when count reaches 0x0000.
1 Writing PMRn immediately replaces value in PIT counter.
PIT interrupt enable. This read/write bit enables the PIF flag to generate interrupt requests.
0 PIF interrupt requests disabled
1 PIF interrupt requests enabled
PIT interrupt flag. This read/write bit is set when the PIT counter reaches 0x0000. Clear
PIF by writing a 1 to it or by writing to PMR. Writing 0 has no effect. Reset clears PIF.
0 PIT count has not reached 0x0000.
1 PIT count has reached 0x0000.
changing the DBG bit from 0 to 1 during debug mode stops the PIT timer.
Table 21-3. PCSRn Field Descriptions
MCF5271 Reference Manual, Rev. 2
0000
0001
0010
1101
1110
PRE
1111
...
Description
System Clock Divisor
2
2
2
2
2
2
...
13
14
15
0
1
2
Freescale Semiconductor
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