LM3S6950 Datasheet, PDF (197/524 Pages) List of Unclassifed Manufacturers – Microcontroller

LM3S6950 Microcontroller
10 General-Purpose Timers
GPTM
Programmable timers can be used to count or time external events that drive the Timer input pins.
The Stellaris^® General-Purpose Timer Module (GPTM) contains four GPTM blocks (Timer0, Timer1,
Timer 2, and Timer 3). Each GPTM block provides two 16-bit timer/counters (referred to as TimerA
and TimerB) that can be configured to operate independently as timers or event counters, or
configured to operate as one 32-bit timer or one 32-bit Real-Time Clock (RTC).
Note: Timer2 is an internal timer and can only be used to generate internal interrupts.
The General-Purpose Timer Module is one timing resource available on the Stellaris^® microcontrollers.
Other timer resources include the System Timer (SysTick) (see “System Timer (SysTick)” on page 38)
and the PWM timer in the PWM module (see “PWM Timer” on page 420).
The following modes are supported:
■ 32-bit Timer modes
– Programmable one-shot timer
– Programmable periodic timer
– Real-Time Clock using 32.768-KHz input clock
– Software-controlled event stalling (excluding RTC mode)
■ 16-bit Timer modes
– General-purpose timer function with an 8-bit prescaler (for one-shot and periodic modes only)
– Programmable one-shot timer
– Programmable periodic timer
– Software-controlled event stalling
■ 16-bit Input Capture modes
– Input edge count capture
– Input edge time capture
■ 16-bit PWM mode
– Simple PWM mode with software-programmable output inversion of the PWM signal
June 14, 2007
197
Luminary Micro Confidential-Advance Product Information