Freescale MCF51CN128以太网连接参考设计

The MCF51CN128 device is a low-cost, low-power, high-performance 32-bit ColdFire V1 microcontroller (MCU) featuring 10/100 BASE-T/TX fast ethernet controller (FEC), media independent interface (MII) to connect an external physical transceiver (PHY), and multi-function external bus interface.

MCF51CN128 also has multiple communication interfaces for various ethernet gateway applications. MCF51CN128 is the first ColdFire V1 device to incorporate ethernet and external bus interface along with new features to minimize power consumption and increase functionality in low-power modes.

MCF51CN128主要特性:

The MCF51CN128 features the following functional units:

• 32-bit ColdFire V1 Central Processing Unit (CPU)

– Up to 50.33 MHz ColdFire CPU from 3.6 V to 3.0 V, up to 40 MHz CPU from 3.0 V to 2.1 V, and up to 20 MHz CPU from 2.1 V to 1.8 V across temperature range of –40 °C to 85 °C

– Provides 0.94 Dhrystone 2.1 MIPS per MHz performance when running from internal RAM (0.76 DMIPS/MHz from flash)

– ColdFire Instruction Set Revision C (ISA_C)

– Support for up to 45 peripheral interrupt requests and 7 software interrupts..

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