Microcontroller User's Manual

1-4 MCF5282 User’s Manual MOTOROLA
MCF5282 Key Features
— Automated queue modes initiated by:
– External edge trigger and gated trigger
– Periodic/interval timer, within QADC module [Queue 1 and 2]
– Software command
— Single-scan or continuous-scan of queues
— Output data readable in three formats:
– Right-justified unsigned
– Left-justified signed
– Left-justified unsigned
— Unused analog channels can be used as digital I/O
— Low pin-count configuration implemented
• Four 32-bit DMA timers
— 15-ns resolution at 66 MHz
— Programmable sources for clock input, including an external clock option
— Programmable prescaler
— Input-capture capability with programmable trigger edge on input pin
— Output-compare with programmable mode for the output pin
— Free run and restart modes
— Maskable interrupts on input capture or reference-compare
— DMA trigger capability on input capture or reference-compare
• Two 4-channel general purpose timers
— Four 16-bit input capture/output compare channels per timer
— 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
— One dual-mode pulse accumulation channel per timer
• Four periodic interrupt timers (PITs)
— 16-bit counter
— Selectable as free running or count down
• Software watchdog timer
— 16-bit counter
— Low-power mode support