Intel® PXA255 Processor
Electrical, Mechanical, and Thermal Specification
Data Sheet
Product Features
■ High Performance Processor
—Intel® XScale™ Microarchitecture
—32 KB Instruction Cache
—32 KB Data Cache
■ Low Power
—Less than 500 mW Typical Internal
Dissipation
—Supply Voltage may be Reduced to
1.00 V
—2 KB “mini” Data Cache
—Extensive Data Buffering
■ Intel® Media Processing Technology
—Enhanced 16-bit Multiply
—40-bit Accumulator
—Low Power/Sleep Modes
■ High Performance Memory Controller
—Four Banks of SDRAM - up to 100 MHz
—Five Static Chip Selects
—Support for PCMCIA or Compact Flash
—Companion Chip interface
■ Flexible Clocking
—CPU clock from 100 to 400 MHz
—Flexible memory clock ratios
—Frequency change modes
■ Rich Serial Peripheral Set
—AC97 Audio Port
■ Additional Peripherals for system
connectivity
—Multimedia Card Controller (MMC)
—SSP Controller
—Network SSP controller for baseband
—I2C Controller
—I2S Audio Port
—USB Client Controller
—Two Pulse Width Modulators (PWMs)
—All peripheral pins double as GPIOs
■ Hardware debug features
—High Speed UART
—Second UART with flow control
—UART with hardware flow control
—FIR and SIR infrared comm ports
■ Hardware Performance Monitoring features
Order Number: 278805-002
February, 2004