NXP Semiconductors MPC862PCVR66B

Overview

MPC862PCVR66B from Freescale Semiconductor is a PowerQUICC™ family integrated communications processor combining a 32-bit MPC8xx PowerPC core, communications processor module (CPM), and system integration unit (SIU) in a single 357-pin PBGA package. It operates at 66 MHz, features 16 KB instruction cache and 8 KB data cache, supports up to four Fast Ethernet MII/UTOPIA interfaces, and targets ATM-enabled networking and controller applications requiring embedded protocol acceleration.

For engineers reviewing the MPC862PCVR66B datasheet, MPC862PCVR66B pinout, MPC862PCVR66B application, or MPC862PCVR66B equivalent, this page delivers verified technical context, cache configuration details, bus timing constraints, thermal resistance values, and validated alternative parts for migration or second-sourcing decisions.

Technical Context

The MPC862PCVR66B implements a single-issue 32-bit PowerPC architecture core with 32 general-purpose registers, branch prediction, and physically addressed caches. Its CPM includes 16 serial DMA channels, dual-port RAM, and enhanced SAR (ESAR) mode supporting OAM monitoring, ATM port-to-port switching, and full-duplex UTOPIA Level 2 operation.

It integrates a memory controller with eight banks, programmable wait states per bank, glueless support for SDRAM/SRAM/Flash, and a 32-bit external bus interface. The SIU provides IEEE 1149.1 JTAG debug, periodic interrupt timer, software watchdog, clock synthesizer, and low-power stop/sleep/deep sleep modes.

Key Specifications

Pinout & Package

Package: 357-pin plastic ball grid array (PBGA), 27 mm × 27 mm, 1.27 mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar communications processor applications.

Compared with MPC862PCVR66B, MPC862PZQ66B trades thermal efficiency for ruggedized packaging, while MPC862PVR80B extends frequency headroom at the cost of higher power and stricter layout rules - both retain identical peripheral register maps and software compatibility.

Availability

MPC862PCVR66B is available at Aetrix Electronics and suitable for DSLAM line cards, ATM edge routers, industrial protocol gateways, and legacy telecom terminal equipment requiring stable component supply across long product lifecycles.

Supply support for MPC862PCVR66B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Freescale Semiconductor (now part of NXP Semiconductors) designed high-performance embedded processors for networking, automotive, and industrial markets before its 2015 acquisition.

The MPC862PCVR66B belongs to the PowerQUICC™ family - engineered specifically for integrated communications processing in ATM, DSL, and TDM infrastructure where hardware-accelerated protocol offload and deterministic real-time response are essential.

FAQ

What is the maximum operating frequency of the MPC862PCVR66B and how does it affect bus timing?

The MPC862PCVR66B operates at a maximum CPU and bus frequency of 66 MHz in 1:1 mode. At this speed, the CLKOUT period ranges from 15.15 ns to 30.30 ns, with strict timing windows for address/data valid setup (B7: min 3.80 ns after CLKOUT) and hold. Exceeding 66 MHz requires 2:1 bus mode (e.g., 80 MHz CPU / 40 MHz bus), which alters wait-state programming and memory controller configuration - the MPC862PCVR66B datasheet specifies these constraints in Table 7 and Section 9.

Does the MPC862PCVR66B support IEEE 1149.1 JTAG debugging, and what debug capabilities does it include?

Yes, the MPC862PCVR66B includes full IEEE 1149.1 test access port (JTAG) support as part of its System Integration Unit (SIU). It provides eight hardware comparators - four for instruction address, two for data address, and two for data value - enabling precise breakpoint generation on load/store operations, instruction fetches, or data matches. This allows non-intrusive real-time tracing and fault isolation in the MPC862PCVR66B's PowerPC core and CPM subsystem.

How does the MPC862PCVR66B's Enhanced SAR (ESAR) mode differ from standard SAR functionality in earlier MPC860 devices?

The MPC862PCVR66B's ESAR mode adds hardware-accelerated OAM performance monitoring, multiple APC priority levels for traffic pacing, ATM port-to-port switching without RAM-based microcode, and optional statistical cell counters per PHY - features absent in MPC860SAR. These enhancements reduce firmware overhead and improve cell-level determinism, making the MPC862PCVR66B suitable for carrier-grade DSLAMs where the MPC860 would require external co-processors for equivalent functionality.

What thermal management considerations apply to the MPC862PCVR66B in a 4-layer PCB design?

For a 4-layer board with power/ground planes and thermal vias to the exposed pad, the MPC862PCVR66B has RθJB = 13 °C/W and RθJA = 23 °C/W. With max power dissipation of 1.000 W at 66 MHz, junction temperature rise above ambient is ~23 °C - so at 70 °C ambient, TJ ≈ 93 °C, staying below the 105 °C limit. Layout must use ≥4 × 0.1 µF bypass capacitors near each VDDH/VDDL group and minimize trace length to ground for all GND balls per JEDEC JESD51-6 guidelines.

Can the MPC862PCVR66B operate with 5 V peripherals, and which pins are 5 V tolerant?

Yes, all MPC862PCVR66B inputs except EXTAL and EXTCLK are 5 V tolerant, with VIH specified from 2.0 V to 5.5 V and VIL up to 0.8 V. This allows direct connection to 5 V UARTs, GPIO expanders, and legacy parallel interfaces without level shifters. However, EXTAL/EXTCLK inputs require VIHC = 0.7×VCC to VCC+0.3 V - so with 3.3 V supply, they accept only up to ~3.6 V, necessitating a 3.3 V clock source or level translator for true 5 V clock inputs.