Overview

This multi-core SoC is built around three Arm11™ MPCores™ delivering excellent processing performance up to 1440 MIPS (when operating at 400 MHz) and integrates on-chip high-performance graphics functions as well as parallel ATA, SD card interface, and video ADC functions. It delivers on a single chip audio routing functionality employing multi-channel I2S and a MediaLB interface.

System Block Diagram

EC-4255 System Block Diagram

Specification
Item EC-4255 Specifications
Type name uPD35003-LN6
Power supply voltage 1.2 V (internal) / 3.3 V, 1.5 V (external)
Maximum operating frequency 400 MHz
Processing performance 1440 MIPS (at 400 MHz)
CPU core Arm11™ MPCore™×3
On-chip RAM Local Memory: 8 Kbytes
Cache memory 32 Kbytes instruction / 32 Kbytes data (each CPU), 4-way set associative type, built-in snoop control unit for cache coherency
External memory Support for connecting a channel of DDR3-SDRAM (DDR1066) modules with 16-bit bus width
Max. operating frequency: 533 MHz Support for direct connection of SRAM or ROM to expansion bus
Extension bus Address space: 64 Mbytes × 6
Main on-chip peripheral functions 2D/3D graphics engine
Display unit × 1 channel
Video input interface × 1 channel
Parallel ATA interface
SD host interface × 2 channels
I/O for sound interfaces × 6 channels
USB 2.0 Host/Function interface
Dedicated DMAC × 52 channels
Controller Area Network (CAN) interface × 2 channels
Media local bus interface × 1 channel
UART x 8 channels
I2C bus interface × 2 channels
Clock serial interface x 8 channels
Timer × 4 channels
A/D converter interface (12-bit) × 12 channels
Video A/D converter interface (10-bit) × 2 channels
Interrupt controller
Real-time clock
Debugging Function (JTAG, ETM trace)
Power-down modes Wait mode
Standby/Standby+ mode
Dormant mode
Package 632-pin BGA (25 mm × 25mm)

* Arm is a registered trademark of Arm Ltd. Arm11 and MPCore are trademarks of of Arm Ltd.
All other trademarks or registered trademarks are the property of their respective owners.

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