MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 210

• 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

MPC555
USER’S MANUAL
Figure 6-1
• Real-Time Clock (RTC) — The RTC is used to provide time-of-day information
• Freeze Support — The SIU allows control of whether the SWT, PIT, TB, DEC
/
fined by the MPC555 / MPC556 architecture to provide a decrementer interrupt.
This binary counter is clocked by the same frequency as the time base (also de-
fined by the MPC555 / MPC556 architecture). The period for the DEC when driv-
en by a 4-Mhz oscillator is 4295 seconds, which is approximately 71.6 minutes.
to the operating system or application software. It is composed of a 45-bit counter
and an alarm register. A maskable interrupt is generated when the counter reach-
es the value programmed in the alarm register. The RTC is clocked by the same
clock as the PIT.
and RTC should continue to run during the freeze mode.
MPC556
Figure 6-1 System Configuration and Protection Logic
shows a block diagram of the system configuration and protection logic.
Clock
SYSTEM CONFIGURATION AND PROTECTION
Configuration
Controller
Interrupt
Monitor
Module
Bus
Time Base Counter
Periodic Interrupt
Watchdog Timer
Rev. 15 October 2000
Decrementer
Real-Time
Software
MPC555
MPC555
Timer
Clock
TEA Signal
Interrupt
Decrementer
Exception
Interrupt or
System Reset
Interrupt
Interrupt
MOTOROLA
6-2