LM3S2110 Datasheet, PDF (175/485 Pages) List of Unclassifed Manufacturers – Microcontroller

LM3S2110 Microcontroller
9 General-Purpose Timers
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 three GPTM blocks (Timer0, Timer1,
and Timer 2). Each GPTM block provides two 16-bit timers/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 36)
and the PWM timer in the PWM module (see “PWM Timer” on page 401).
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
9.1 Block Diagram
Note: In Figure 9-1 on page 176, the specific CCP pins available depend on the Stellaris^® device.
See Table 9-1 on page 176 for the available CCPs.
November 29, 2007
175
Preliminary