MPC850VR50BU

The MPC850 is a versatile, one-chip integrated microprocessor and peripheral combination that can be used in a variety of controller applications, excelling particularly in communications and networking products. The MPC850, which includes support for Ethernet, is specifically designed for cost-sensitive, remote-access, and telecommunications applications. It is provides functions similar to the MPC860, with system enhancements such as universal serial bus (USB) support and a larger (8-Kbyte) dual-port RAM. In addition to a high-performance embedded MPC8xx core, the MPC850 integrates system functions, such as a versatile memory controller and a communications processor module (CPM) that incorporates a specialized, independent RISC communications processor (referred to as the CP). This separate processor off-loads peripheral tasks from the embedded MPC8xx core.

• Embedded single-issue, 32-bit MPC8xx core (implementing the PowerPC architecture) with thirty-two 32-bit general-purpose registers (GPRs)
• Advanced on-chip emulation debug mode
• Data bus dynamic bus sizing for 8, 16, and 32-bit buses
• Completely static design (0–80 MHz operation)
• System integration unit (SIU)
• Interrupts
  • Eight external interrupt request (IRQ) lines
  • Twelve port pins with interrupt capability
  • Fifteen internal interrupt sources
  • Programmable priority among SCCs and USB
  • Programmable highest-priority request
• Single socket PCMCIA-ATA interface
  • Master (socket) interface, release 2.1 compliant
  • Single PCMCIA socket
  • Supports eight memory or I/O windows
• QUICC multichannel controller (QMC) microcode features
  • Up to 64 independent communication channels on a single SCC
  • Arbitrary mapping of 0–31 channels to any of 0–31 TD