mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 355

• Manufacturer Part Number: mcf5272
• Description: Mcf5272 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA
Chapter 15
Timer Module
This chapter describes configuration and operation of the four general-purpose timer
modules, timer 0, 1, 2 and 3.
15.1 Overview
The timer module has four identical general-purpose 16-bit timers and a software watchdog
timer, described in Chapter 6, “System Integration Module (SIM).”
Each general-purpose timer consists of a timer mode register (TMR n ), a timer capture
register (TCAPn), a 16-bit timer counter (TCNn), a timer reference register (TRRn), and a
timer event register (TERn). The TMRs contain the prescaler value programmed by the
user. The four timer units have the following features:
• Maximum period of 4 seconds at 66 MHz
• 15-nS resolution at 66 MHz
• Programmable sources for the clock input, including external clock
• Input capture capability with programmable trigger edge on input pins
• Output compare with programmable mode for the output pins
• Free run and restart modes
Chapter 15. Timer Module
15-1