Family Configurations
— 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)
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Tightly-coupled coprocessor to accelerate software-based encryption and message digest functions
Support for DES, 3DES, AES, MD5, and SHA-1 algorithms
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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
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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
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— Based on and includes all existing features of the Freescale TouCAN module
— Full implementation of the CAN protocol specification version 2.0B
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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
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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 ]
