Motorola ColdFire MCF5281 - Manual (Page 35)

Overview
Freescale Semiconductor 1-3
• Queued serial peripheral interface (QSPI)
— Full-duplex, three-wire synchronous transfers
— Up to four chip selects available
— Master mode operation only
— Programmable master bit rates
— Up to 16 pre-programmed transfers
• Queued analog-to-digital converter (QADC)
— 8 direct, or up to 18 multiplexed, analog input channels
— 10-bit resolution +/- 2 counts accuracy
— Minimum 7
μS conversion time
— Internal sample and hold
— Programmable input sample time for various source impedances
— Two conversion command queues with a total of 64 entries
— Sub-queues possible using pause mechanism
— Queue complete and pause software interrupts available on both queues
— Queue pointers indicate current location for each queue
— 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 80 MHz (66 MHz for MCF5214 and MCF5216)
— 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
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3