MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor
17-41
Figure 17-29. Modulus Counter Up Mode Example
Figure 17-30. Modulus Counter Up/Down Mode Example
17.4.4.4.12 Output Pulse Width and Frequency Modulation Mode (OPWFM)
Table 17-24. Mode of Operation: OPWFM Mode
MODE[0:6]
Unified Channel Mode of Operation
0b0011000
Output pulse width and frequency modulation
(FLAG set at match of internal counter and comparator B, immediate update)
0b0011001
Output pulse width and frequency modulation
(FLAG set at match of internal counter and comparator B, next period update)
0b0011010
Output pulse width and frequency modulation
(FLAG set at match of internal counter and comparator A or comparator B, immediate
update)
0b0011011
Output pulse width and frequency modulation
(FLAG set at match of internal counter and comparator A or comparator B, next
period update)
0x000303
0x000200
EMIOS_CCNT
Rn
FLAG
Set Event
MODE[4] = 0
A1 Match
A1 Match
A1 Value
1
Notes:
1
Writing EMIOS_A
n
writes to
A2.
A2
value transferred to
A1 according to OU
n
bit.
Time
0x000000
A1 Match
A1 Match
0x000200
0x000303
0xFFFFFF
0x000303
0x000200
Write to
A2
Write to
A2
0xxxxxxx 0x000303
0x000303
0x000200
EMIOS_CCNT
Rn
FLAG
Set Event
MODE[4] = 1
A1 Match
A1 Match
A1 Value
1
Notes:
1
Writing EMIOS_A
n
writes to
A2.
A2
value transferred to
A1 according to OU
n
bit.
Time
0x000000
B1(=0) Match
B1(=0) Match
0x000200
0xFFFFFF
0x000303
0x000200
Write to
A2
0xxxxxxx 0x000303
Write to
A2
0x000200
Summary of Contents for MPC5553
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