Family Configurations
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— 40 MHz or 33 MHz off-platform bus frequency
— Sixteen general-purpose, 32-bit data and address registers
— Implements ColdFire ISA_A with extensions to support the user stack pointer register and four new instructions
for improved bit processing (ISA_A+)
— Enhanced Multiply-Accumulate (EMAC) unit with four 32-bit accumulators to support 16×16
→
32 or
32×32
→
32 operations
— Cryptographic Acceleration Unit (CAU)
– Tightly-coupled coprocessor to accelerate software-based encryption and message digest functions
– Support for DES, 3DES, AES, MD5, and SHA-1 algorithms
System debug support
— Real-time trace for determining dynamic execution path
— Background debug mode (BDM) for in-circuit debugging (DEBUG_B+)
— Real-time debug support, with six hardware breakpoints (4 PC, 1 address and 1 data) configurable into a 1- or
2-level trigger
On-chip memories
— Up to 64-Kbyte dual-ported SRAM on CPU internal bus, supporting core, DMA, and USB access with standby
power supply support for the first 16 Kbytes
— Up to 512 Kbytes of interleaved flash memory supporting 2-1-1-1 accesses
Power management
— Fully static operation with processor sleep and whole chip stop modes
— Rapid response to interrupts from the low-power sleep mode (wake-up feature)
— Clock enable/disable for each peripheral when not used (except backup watchdog timer)
— Software controlled disable of external clock output for low-power consumption
FlexCAN 2.0B module
— Based on and includes all existing features of the Freescale TouCAN module
— Full implementation of the CAN protocol specification version 2.0B
– Standard data and remote frames (up to 109 bits long)
– Extended data and remote frames (up to 127 bits long)
– Zero to eight bytes data length
– Programmable bit rate up to 1 Mbit/sec
— Flexible message buffers (MBs), totalling up to 16 message buffers of 0–8 byte data length each, configurable as
Rx or Tx, all supporting standard and extended messages
— Unused MB space can be used as general purpose RAM space
— Listen-only mode capability
— Content-related addressing
— No read/write semaphores
— 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
Universal Serial Bus On-The-Go (USB OTG) dual-mode host and device controller
— Full-speed / low-speed host controller
— USB 1.1 and 2.0 compliant full-speed / low speed device controller
— 16 bidirectional end points
— DMA or FIFO data stream interfaces
MCF52259 ColdFire Microcontroller, Rev. 0
6
Freescale Semiconductor
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
