Offers high performance and value for a wide variety of embedded applications, including wired communications, data storage and pervasive computing devices
Application code compatible with all other PowerPC® processors
Built with reusable core-based design principles with many functions pre-verified in silicon
Utilizes 64-bit CoreConnect™ bus architecture at up to 133MHz, providing high-speed on-chip performance with low latencies
Offers an effective functional and performance upgrade to designs based on the PowerPC 403GCX embedded processor
Implements innovative CodePack™ code compression, improving instruction code density and reducing overall system cost
Low power consumption for thermally sensitive environments
PowerPC 405B3 embedded core
133, 200 or 266MHz CPU core
Memory Management Unit
16KB instruction and 8KB data caches
Multiply-Accumulate (MAC) function, including fast multiply unit
5-stage pipeline
Timers
JTAG and non-invasive trace debug logic
SDRAM controller
4 chip selects, 4MB to 256MB per bank
PC100 (200MHz) and PC133 (266MHz) compliant
Supports dual- and quad-bank SDRAMs with 11x8 to 13x11 addressing
Programmable address mapping and timing
Separate 32-byte read and 128-byte write buffers
Power management (self-refresh)
32-bit external data bus width
ECC option
External peripheral controller
Supports ROM, EPROM, SRAM, Flash and slave peripheral I/O devices
8 banks
Burst and non-burst devices
8-, 16-, 32-bit external data bus width
Latch data on ready, synchronous or asynchronous
Parity option
Programmable address mapping
CodePack decompression
Instructions stored in memory in compressed format
Improves code density up to 40%
No loss in instruction set capability
External bus master controller
Allows external masters to access SDRAM
DMA Controller
4 independent channels
8-, 16-, 32-bit peripheral support
Supports buffered memory-to-peripheral, peripheral-to-memory and memory-to-memory transfers
Scatter/gather capability with command/ data chaining
32-byte data buffer
Supports transfers between SDRAM, PCI, internal UARTs, and devices on the external peripheral bus
Other On-Chip Peripherals
2 serial ports (16550), 9-pin and 4-pin
Master and slave IIC controller, compliant with Phillips I2C spec
Up to 23 general purpose I/Os
Interrupt controller including up to 12 external interrupts
