Electrical Characteristics
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
F-69
Figure F-56. MMCSM Prescaler Clock Select To Counter Bus Increment Timing Diagram
F.20.3
MDASM Timing Characteristics
Table F-26. MDASM Timing Characteristics
Note:
All delays are in system clock periods.
Characteristics
Symbol
Min
Max
Input Modes: (IPWM, IPM, IC, DIS)
MDASM input pin period
t
PPER
4
—
MDASM pin low time
t
PLO
2
—
MDASM pin high time
t
PHI
2
—
Input capture resolution
t
CAPR
—
2
Input pin to Counter Bus capture delay
t
PCAP
1
3
1
1
If the counter bus capture occurs when the counter bus is changing then the capture is delayed one cycle. In
situations where the counter bus is stable when the input capture occurs the t
PCAP
has a maximum delay of two
cycles (the one-cycle uncertainty is due to the synchronizer).
Input pin to interrupt flag delay
t
PFLG
2
3
Input pin to PIN delay
t
PIN
1
2
Counter bus resolution
t
CBR
—
2
2
2
Maximum resolution is obtained by setting CPSMPSL[3:0] =0x2 and MDASMSCR_CP[7:0] =0xFF.
Output Modes: (OC, OPWM)
Output pulse width
3
3
Maximum output resolution and pulse width depends on counter (e.g., MMCSM) and MCPSM prescaler
settings.
t
PULW
2
—
Compare resolution
3
t
COMR
—
2
2
Counter Bus to pin change
t
CBP
3
Counter Bus to interrupt flag set.
t
CBFLG
3
f
SYS
MMCSMSCR_CLS[1:0]
t
MCME
Counter bus[15:0]
A
A+1
3
4
2
1
1
00
11
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...