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The MCF5206e integrated microprocessor combines a ColdFire? core with several peripheral

functions such as a DRAM controller, timers, parallel and serial interfaces, and system integration. This device is an enhanced version of the MCF5206, which is in production today. Not only does the MCF5206e provide a performance upgrade to the MCF5206 due to the increased 4-Kbyte I-cache, 8-Kbyte SRAM and increased frequency, but this device also integrates an additional multiply accumulate (MAC) unit, hardware divide, and two-channel DMA to the device while maintaining pin compatibility with the MCF5206.

Features List

The following are the primary features of the MCF5206e integrated processor:

? ColdFire Version 2 core

— Variable-length RISC

— 32-bit internal address bus with 28-bit external bus; chip select and DRAM decoding use

internal 32 bit

— 32-bit data base

— 16 user-visible 32-bit wide registers

— Supervisor and user modes for system protection

— Vector base register to relocate exception-vector table

— Optimized for high level language constructs

— 50 MIPS at 54 MHz

? Multiply accumulate

— High speed, complex arithmetic functions for signal processing applications

— Single clock issue rate with 3-stage execution pipeline

— One MAC cycle for 16x16 and 32x32 multiplies, all with 32-bit accumulate

— Four-Kbyte direct-mapped instruction cache

— Eight-Kbyte on-chip SRAM that provides one-cycle access to critical code and data

? DRAM controller

— Programmable refresh timer provides CAS before RAS refresh

— Support for 2 separate memory banks

— Support for fast page mode DRAMs and extended-data-out (EDO) DRAMs

— External bus master access

? DMA controller

— Two fully programmable channels with external request pins supporting dual-address and

single address transfers with 32-bit capability

— Two address pointers per channel that can increment or remain constant

— 16-bit transfer counter per channel

— Operand packing and unpacking

— Auto-alignment transfers for efficient block movement

— Bursting and cycle stealing

— Two clock-cycle internal access

? Two universal synchronous/asynchronous receiver/transmitters (UARTs)

— Full duplex operation

— Baud-rate generator

— Modem control signals (CTS, RTS)

— Processor-interrupt capability

? Dual 16-bit general-purpose multimode timers

— 8-bit prescaler

— Timer input and output pins

— 12 ns resolution with 54 MHz system clock

— Processor interrupt capability

? Motorola bus (M-Bus) module

— Interchip bus interface for EEPROMs, LCD controllers, A/D converters, keypads

— Compatible with industry-standard I2C bus

— Master or slave modes supporting multiple masters

— Automatic interrupt generation with programmable level

? System interface

— Glueless bus interface to 8 bit, 16 bit, and 32 bit DRAM, SRAM, ROM, and I/O devices

— Eight programmable chip selects and programmable wait states and port sizes allowing

external bus masters to access chip selects

— Programmable external interrupts

— 8-bit general-purpose I/O interface

— System protection

– 16-bit software watchdog timer with prescaler

– Double bus fault monitor

– Bus timeout monitor

– Spurious interrupt monitor

– Programmable interrupt controller (low interrupt latency, 3 external interrupt inputs, and

programmable interrupt priority and autovector generator)

— IEEE 1149.1 test (JTAG) support

? System debug interface

— Real-time trace

— Background debug mode (BDM)

? Fully static 3.3-volt operation with 5-volt tolerant inputs

? 160-pin QFP package; pin-compatible with MCF5206