![Freescale Semiconductor MPC5553 Скачать руководство пользователя страница 685](http://html1.mh-extra.com/html/freescale-semiconductor/mpc5553/mpc5553_reference-manual_2330655685.webp)
MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
17-46
Freescale Semiconductor
In order to achieve a duty cycle of 100%, both registers A1 and B1 must be set to the same value. When a
simultaneous match occurs between the selected time base and registers A1 and B1, the output flip-flop is
set at every period to the value of EDPOL bit and the selected time base switches to the selected counter
bus, allowing a new cycle to begin at any time, as previously described. 0% duty cycle is possible by
writing 0x000000 to register A. When a match occurs, the output flip-flop is set at every period to the
complement of EDPOL bit and the selected time base switches to the selected counter bus, allowing a new
cycle to begin at any time, as previously described. In both cases, FLAG is generated regardless of
MODE[5] bit.
NOTE
If A1 and B1 are set to the 0x000000, a 0% duty cycle waveform is
produced.
NOTE
Any updates to the A or B register will take place immediately.
show the unified channel running in OPWMC with leading and trailing
dead time, respectively.
Figure 17-33. Output PWMC with Leading Dead-time Insertion
Output
Flip-Flop
A1 Match A1 Match
Time
0x000000
0x000303
0x000200
Update to
A1
Selected
MODE[6] = 1
Counter Bus
A1 Match
Notes:
1
Writing EMIOS_A
n
writes to
A2.
2
Writing EMIOS_B
n
writes to
B1.
A2
value transferred to
A1 according to OU
n
bit.
B2
value transferred to
B1 according to OU
n
bit.
Update to
A1
A1 Match
A1 Value
1
$000200
$000200
0x000303
0x000303
0x000200
0x000303
0xxxxxxx
Update to
B1
B1 Match
0x000010
0x000000
EMIOS_CCNTR
B1
Match
B1 Value
2
0x000010
Time
Содержание MPC5553
Страница 5: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 2 Freescale Semiconductor...
Страница 21: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 xvi Freescale Semiconductor...
Страница 47: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 1 26 Freescale Semiconductor...
Страница 163: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 4 20 Freescale Semiconductor...
Страница 179: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 5 16 Freescale Semiconductor...
Страница 561: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 13 38 Freescale Semiconductor...
Страница 615: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 14 54 Freescale Semiconductor...
Страница 707: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 17 68 Freescale Semiconductor...
Страница 755: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 18 48 Freescale Semiconductor...
Страница 873: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 19 118 Freescale Semiconductor...
Страница 984: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 Freescale Semiconductor 21 41...
Страница 985: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 21 42 Freescale Semiconductor...
Страница 1019: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 22 34 Freescale Semiconductor...
Страница 1129: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 25 90 Freescale Semiconductor...
Страница 1207: ...Revision History 4 Freescale Semiconductor...