MCF52235 datasheet(7/54 Pages) FREESCALE

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MCF52235 Family Configurations

MCF52235 ColdFire Microcontroller Data Sheet, Rev. 7

Freescale Semiconductor

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Four 32-bit DMA timers

— 17-ns resolution at 60 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 output compare

— DMA trigger capability on input capture or output compare

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Four-channel general purpose timers

— 16-bit architecture

— Programmable prescaler

— Output pulse widths variable from microseconds to seconds

— Single 16-bit input pulse accumulator

— Toggle-on-overflow feature for pulse-width modulator (PWM) generation

— One dual-mode pulse accumulation channel

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Pulse-width modulation timer

— Operates as eight channels with 8-bit resolution or four channels with 16-bit resolution

— Programmable period and duty cycle

— Programmable enable/disable for each channel

— Software selectable polarity for each channel

— Period and duty cycle are double buffered. Change takes effect when the end of the current period is reached

(PWM counter reaches zero) or when the channel is disabled.

— Programmable center or left aligned outputs on individual channels

— Four clock sources (A, B, SA, and SB) provide for a wide range of frequencies

— Emergency shutdown

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Real-Time Clock (RTC)

— Maintains system time-of-day clock

— Provides stopwatch and alarm interrupt functions

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Two periodic interrupt timers (PITs)

— 16-bit counter

— Selectable as free running or count down

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Software watchdog timer

— 32-bit counter

— Low power mode support

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Clock Generation Features

— 25 MHz crystal input

— On-chip PLL can generate core frequencies up to maximum 60MHz operating frequency

— Provides clock for integrated EPHY

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Dual Interrupt Controllers (INTC0/INTC1)

— Support for multiple interrupt sources organized as follows:

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Fully-programmable interrupt sources for each peripheral

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7 fixed-level interrupt sources

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Seven external interrupt signals

MCF52235 Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc

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