Overview
MCF52235 ColdFire® Integrated Microcontroller Reference Manual, Rev. 6
1-6
Freescale Semiconductor
— Unused Message Buffer space can be used as general purpose RAM space
— Listen only mode capability
— Content-related addressing
— No read/write semaphores required
— Three programmable mask registers: global for MBs 0-13, special for MB14, and special for
MB15
— Programmable transmit-first scheme: lowest ID or lowest buffer number
— Time stamp based on 16-bit free-running timer
— Global network time, synchronized by a specific message
— Maskable interrupts
•
Three universal asynchronous/synchronous receiver transmitters (UARTs)
— 16-bit divider for clock generation
— Interrupt control logic with maskable interrupts
— DMA support
— Data formats can be 5, 6, 7 or 8 bits with even, odd or no parity
— Up to 2 stop bits in 1/16 increments
— Error-detection capabilities
— Modem support includes request-to-send (RTS) and clear-to-send (CTS) lines for two UARTs
— Transmit and receive FIFO buffers
•
I
2
C module
— Interchip bus interface for EEPROMs, LCD controllers, A/D converters, and keypads
— Fully compatible with industry-standard I
2
C bus
— Master and slave modes support multiple masters
— Automatic interrupt generation with programmable level
•
Queued serial peripheral interface (QSPI)
— Full-duplex, three-wire synchronous transfers
— Up to four chip selects available
— Master mode operation only
— Programmable bit rates up to half the CPU clock frequency
— Up to 16 pre-programmed transfers
•
Fast analog-to-digital converter (ADC)
— Eight analog input channels
— 12-bit resolution
— Minimum 1.125
μ
s conversion time
— Simultaneous sampling of two channels for motor control applications
— Single-scan or continuous operation
— Optional interrupts on conversion complete, zero crossing (sign change), or under/over
low/high limit
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:MCF52234CVM60,
MCF52235CVM60
