MPC561MZP56 Freescale, MPC561MZP56 Datasheet - Page 262
MPC561MZP56
Manufacturer Part Number
MPC561MZP56
Description
Manufacturer
Freescale
Datasheet
1.MPC561MZP56.pdf
(1420 pages)
Specifications of MPC561MZP56
Cpu Family
MPC56x
Device Core
PowerPC
Device Core Size
32b
Frequency (max)
56MHz
Interface Type
QSPI/SCI/SPI/UART
Total Internal Ram Size
32KB
# I/os (max)
56
Number Of Timers - General Purpose
22
Operating Supply Voltage (typ)
2.6/5V
Operating Supply Voltage (max)
2.7/5.25V
Operating Supply Voltage (min)
2.5/4.75V
On-chip Adc
2(32-chx10-bit)
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 125C
Operating Temperature Classification
Automotive
Mounting
Surface Mount
Pin Count
388
Package Type
BGA
Program Memory Type
ROMLess
Program Memory Size
Not Required
Lead Free Status / RoHS Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MPC561MZP56
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Company:
Part Number:
MPC561MZP56R2
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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System Configuration and Protection
Although the writes must occur in the correct order prior to time-out, any number of instructions may be
executed between the writes. This allows interrupts and exceptions to occur, if necessary, between the two
writes.
Not 0x556C/Don’t Reload
Reset
0x556C/Don’t Reload
State 0
State 1
Waiting for 0x556C
Waiting for 0xAA39
0xAA39/Reload
Not 0x556C/Don’t Reload
Not 0xAA39/Don’t Reload
Figure 6-9. SWT State Diagram
Although most software disciplines support the watchdog concept, different systems require different
time-out periods. For this reason, the software watchdog provides a selectable range for the time-out
period.
In
Figure
6-10, the range is determined by the value in the SWTC field. The value held in the SWTC field
is then loaded into a 16-bit decrementer clocked by the system clock. An additional divide by 2048
prescaler is used if necessary. The decrementer begins counting when loaded with a value from the
software watchdog timing count field (SWTC). After the timer reaches 0x0, a software watchdog
expiration request is issued to the reset or NMI control logic.
Upon reset, the value in the SWTC is set to the maximum value and is again loaded into the software
watchdog register (SWR), starting the process over. When a new value is loaded into the SWTC, the
software watchdog timer is not updated until the servicing sequence is written to the SWSR. If the SWE
is loaded with the value zero, the modulus counter does not count (i.e. SWTC is disabled).
MPC561/MPC563 Reference Manual, Rev. 1.2
6-22
Freescale Semiconductor
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