mcf5282 Freescale Semiconductor, Inc, mcf5282 Datasheet - Page 369

• Manufacturer Part Number: mcf5282
• Manufacturer: Freescale Semiconductor, Inc

Chapter 20
General Purpose Timer Modules (GPTA and GPTB)
The processor has two 4-channel general purpose timer modules (GPTA and GPTB). Each consists of a
16-bit counter driven by a 7-stage programmable prescaler.
A timer overflow function allows software to extend the timing capability of the system beyond the 16-bit
range of the counter. Each of the four timer channels can be configured for input capture, which can
capture the time of a selected transition edge, or for output compare, which can generate output waveforms
and timer software delays. These functions allow simultaneous input waveform measurements and output
waveform generation.
Additionally, one of the channels, channel 3, can be configured as a 16-bit pulse accumulator that can
operate as a simple event counter or as a gated time accumulator. The pulse accumulator uses the GPT
channel 3 input/output pin in either event mode or gated time accumulation mode.
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Features of the general-purpose timer include:
Freescale Semiconductor
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Four 16-bit input capture/output compare channels
16-bit architecture
Programmable prescaler
Pulse widths variable from microseconds to seconds
Single 16-bit pulse accumulator
Toggle-on-overflow feature for pulse-width modulator (PWM) generation
External timer clock input (SYNCA/SYNCB)
Features
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
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