MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 938

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC555CME

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC555
• Data Bus Width: 32 bit
• Interface Type: RS-232
• For Use With/related Products: MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

G.21.1 MPWMSM Timing Characteristics
MPC555 / MPC556
USER’S MANUAL
PWMSM Output Resolution
PWM Output Pulse
mpwmi Input Pin to MPWMSCR_PIN
Status Set
CPSM Enable To Output Set
MPWMSM Enable to Output Set (MIN)
MPWMSM Enable to Output Set (MAX)
Interrupt Flag to Output Pin Reset (Period
Start)
NOTES:
MPWMO output pin
1. Minimum output resolution depends on MPWMSM and MCPSM prescaler settings.
2. Maximum resolution is obtained by setting CPSMPSL[3:0] =0x2 and MPWMSCR_CP[7:0] =0xFF.
3. Excluding the case where the output is always “0”.
4. With MPWMSM enabled before enabling the MCPSM. Please also see Note *1 on the MCPSM timing informa-
5. The exact timing from mpwmsm enable to the pin being set depends on the timing of the register write and the
6. When MCPSMSCR_PSL = 0x0000, this gives a prescale value of 16 and it is 16 which should be used in these
7. Note: the interrupt is set before the output pin is reset (Signifying the start of a new period).
7
Figure G-35 MPWMSM Minimum Output Pulse Example Timing Diagram
tion.
MCPSM vs_pclk.
calculations. When MCPSMSCR_PSL = 0x0001, the CPSM is inactive.
Characteristic
f
SYS
3
Table G-22 MPWMSM Timing Characteristics
4
ELECTRICAL CHARACTERISTICS
5
5
(All delays are in IMB clock periods)
Rev. 15 October 2000
Symbol
t
PWMO
t
t
t
t
t
t
PWMR
PWMO
min
PWMP
PWME
PWME
t
FLGP
PIN
(MPWMPERR – MPWMPULR) * (256 – MPWMSCR_CP)
.
(256 – MPWMSCR_CP) * MCPSMSCR_PSL – 1
(255 – MPWMSCR_CP) * MCPSMSCR_PSL
(MPWMPERR – MPWMPULR+ 1) * (256 –
MPWMSCR_CP) * MCPSMSCR_PSL +1
t
PWME
Min
2.0
–
1
1
(MIN) + MCPSMSCR_PSL – 1
* MCPSMSCR_PSL +3 +
2.0
Max
—
2
MOTOROLA
2
6
6
6
G-60