LM3S1937-IBZ50 Luminary Micro, Inc, LM3S1937-IBZ50 Datasheet - Page 205
LM3S1937-IBZ50
Manufacturer Part Number
LM3S1937-IBZ50
Description
Lm3s1937 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S1937-IBZ50.pdf
(524 pages)
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10
10.1
July 25, 2008
General-Purpose Timers
Programmable timers can be used to count or time external events that drive the Timer input pins.
The Stellaris
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). Timers can also be used to
trigger analog-to-digital (ADC) conversions. The trigger signals from all of the general-purpose timers
are ORed together before reaching the ADC module, so only one timer should be used to trigger
ADC events.
The General-Purpose Timer Module is one timing resource available on the Stellaris
Other timer resources include the System Timer (SysTick) (see “System Timer (SysTick)” on page 42)
and the PWM timer in the PWM module (see “PWM Timer” on page 422).
The following modes are supported:
■
■
■
■
Block Diagram
Note:
32-bit Timer modes
–
–
–
–
16-bit Timer modes
–
–
–
–
16-bit Input Capture modes
–
–
16-bit PWM mode
–
Programmable one-shot timer
Programmable periodic timer
Real-Time Clock using 32.768-KHz input clock
Software-controlled event stalling (excluding RTC mode)
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
Input edge count capture
Input edge time capture
Simple PWM mode with software-programmable output inversion of the PWM signal
In Figure 10-1 on page 206, the specific CCP pins available depend on the Stellaris
See Table 10-1 on page 206 for the available CCPs.
®
General-Purpose Timer Module (GPTM) contains three GPTM blocks (Timer0, Timer1,
Preliminary
LM3S1937 Microcontroller
®
microcontrollers.
®
device.
205
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