MPC855TVR66D4

The MPC855TVR66D4 is a Freescale/NXP PowerQUICC II Pro embedded processor in the MPC855 family. It combines a 32‑bit PowerPC core with networking‑oriented peripherals for telecom and embedded router/switch applications.
Key characteristics (typical; exact specs depend on revision):
- 32‑bit PowerPC core with high‑throughput execution
- Multiple Ethernet interfaces (MACs) for LAN/WAN networking
- PCI/PCI‑X interface for expansion
- USB controller; memory/Flash interfaces; DMA engine
- On‑chip system management, interrupts, and buffering capabilities
- Flexible memory interfaces (SDRAM/Flash/NAND, etc.)
Package/variant:
- TVR66D4 denotes a specific packaging and revision variant; refer to the datasheet for exact pinout and temperature range.
Usage notes:
- Commonly used in embedded networking gear (routers, gateways, switches)
- Supported by Freescale/NXP BSPs, CodeWarrior, and GNU toolchains
For precise specs (clock speed, peripheral counts, memory interface, and pinout), consult the MPC855TVR66D4 datasheet and user guide.

MPC855TVR66D4 features (concise):
- Freescale PowerQUICC II Pro single-chip communications processor with a 32-bit PowerPC core
- Speed grade up to 66 MHz (as indicated by the part number)
- On-chip PCI/PCI-X interface for host/expansion connectivity
- Integrated Ethernet MACs with DMA for packet I/O (10/100 Mbps family)
- On-chip memory interface with ECC (DDR/SDRAM) and external memory support
- Rich I/O mix: multiple serial ports (SCI), SPI, I2C, GPIOs
- DMA engine, advanced interrupt controller, timers, and watchdog
- Debug support (JTAG/trace) for development and maintenance
- Tape-and-Reel packaging option (TVR) for distribution; D4 revision
- Targeted at embedded networking applications (routers, switches, telecom endpoints)
Note: exact counts of MACs, memory speeds, and peripheral counts can vary by revision; this summarizes typical MPC855 features for the 66 MHz TVR variant.

- Pin count: 208 pins (LQFP208 package)
- Function: Freescale/MPC PowerQUICC II Pro embedded processor (MPC855) with a 32-bit PowerPC core and integrated peripheral set (e.g., PCI/PCI-X, Ethernet MACs, USB, memory controllers) for embedded networking applications.

Manufacturer: Freescale Semiconductor (now part of NXP Semiconductors).
Company type: Global semiconductor company that designs and manufactures embedded processors and microcontrollers (e.g., PowerPC-based MPC cores) and related ICs for automotive, networking, and industrial applications.

Typical application areas for MPC855TVR66D4 (embedded PowerPC MPC85xx) include:
- Embedded networking: routers, switches, firewalls, VPN gateways
- Telecom/data communications: edge routers, DSLAMs, backhaul gateways
- Industrial automation: real-time control, data acquisition, HMI
- Storage/edge data: disk controllers, NAS/SAN appliances
- Multimedia and surveillance: IP cameras, video gateways, encoding/decoding
- Rugged/defense and automotive embedded systems for harsh environments

Ball Grid Array (MAPBGA) package.