MPC561MZP56 Freescale, MPC561MZP56 Datasheet - Page 703

• Manufacturer Part Number: MPC561MZP56
• Manufacturer: Freescale

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

the system clock and the CAN bit segments. Refer to
information on the bit timing registers.
A bit is divided into four separate non-overlapping time segments called SYNC_SEG, PROPSEG, PSEG1,
and PSEG2. These are illustrated in
the segment durations:
The sample point indicated in
bit is selected (CANCTRL1[SAMP] bit = 0). If three samples per bit are selected, the sample point
indicated in
Freescale Semiconductor
t
SYSTEM
CLOCK
S-CLOCK
TIME
QUANTUM
Transmit
point
NBT
System Clock
SS
Frequency
Figure 16-5
= t
(MHz)
56
40
25
20
16
56
40
25
20
SYNC_SEG
Table 16-8. Example System Clock, CAN Bit Rate, and S-Clock Frequencies
SYNC_SEG
Figure 16-5. Relationship between System Clock and CAN Bit Segments
SS
CAN Bit Rate
+ t
marks the position of the final sample.
(MHz)
0.500
0.500
0.500
0.500
PROPSEG
1
1
1
1
1
Figure 16-5
PROPSEG
MPC561/MPC563 Reference Manual, Rev. 1.2
Baud Rate Prescaler (PRESDIV)
+ t
Figure
Possible S-Clock
Frequency (MHz)
PSEG1
Nominal bit time (NBT)
is the position of the actual sample point if a single sample per
16-5. The period of the nominal bit time (NBT) is the sum of
1, 2, 2.5
10, 20
+ t
8, 16
56
40
25
56
40
25
PSEG2
PSEG1
Section 16.7, “Programming
Sample point
Possible Number of
Time Quanta/Bit
10, 20
2, 4, 5
8, 16
118
56
40
25
80
50
PSEG2
PRESDIV Value + 1
CAN 2.0B Controller Module
Model,” for more
20, 10, 8
2, 1
2, 1
1
1
1
1
1
1
16-9