MCF5253 Reference Manual, Rev. 1Freescale Semiconductor 1-1Chapter 1MCF5253 Introduction1.1 MCF5253 OverviewThis chapter provides an overview of the MCF5253 ColdFire ® processor and general descriptions of theMCF5253 features and modules.The MCF5253 is also an excellent general purpose system controller with over 125 Dhrystone 2.1 MIPS@ 140 MHz performance at a very competitive price. The integrated peripherals and eMAC allow theMCF5253 to replace both the microcontroller and the DSP in certain applications. Most peripheral pinscan also be remapped as general purpose I/O pins.Low power features include flexible PLL (with power-down mode) with dynamic clock switching, ahardwired CD ROM decoder, advanced 0.13um CMOS process technology, 1.2 V core power supply, andon-chip 128 Kbyte SRAM.For additional information regarding software drivers and applications, refer to the MCF5253 website,http://www.freescale.com/coldfire.1.2 MCF5253 Feature IntroductionThe MCF5253 integrated microprocessor combines a Version 2 ColdFire processor core operating at140 MHz with the following modules.• USB 2.0 high-speed on-the-go (OTG) with integrated PHY• Dedicated ATA hard disc interface• Dedicated USB and ATA 16k SRAM with DMA support• SmartMedia interface (including IDE and compact flash)• Dual I 2C1 controller• Three UARTs• NOR flash interface• Supports 16-wide SDRAM memories• Flash Memory Card Interface• Serial Audio Interface which supports IIS and EIAJ audio protocols• Digital audio transmitter (SPDIF) and two receivers compliant with IEC958 audio protocol• Queued serial peripheral interface (QSPI) (master only)• CD-ROM and CD-ROM XA block decoding and encoding function1. I2 C is a Philips proprietary bus
