NXP Semiconductors KMPC8270CVRMIBA

Overview

KMPC8270CVRMIBA from Freescale Semiconductor is a PowerQUICC II integrated communications processor featuring a dual-issue G2_LE core (Power Architecture®-compliant), 16 KB instruction and 16 KB data caches, three Fast Communication Controllers (FCCs) supporting 10/100-Mbit Ethernet via MII/RMII, four Serial Communications Controllers (SCCs), one USB 2.0 full/low-speed controller, and PCI bridge compliant with PCI Specification Rev. 2.2 - deployed in carrier-grade access gateways and industrial protocol gateways.

For engineers reviewing the KMPC8270CVRMIBA datasheet, KMPC8270CVRMIBA pinout, KMPC8270CVRMIBA application, or KMPC8270CVRMIBA equivalent, key selection considerations include confirmed 516-pin PBGA (lead-free VR package), 166–450 MHz CPU frequency range, separate VDD (1.45–1.60 V) and VDDH (3.135–3.465 V) supplies, CPM-based serial protocol offload capability, and absence of UTOPIA II, TC layer, and IMA features present only on MPC8280.

Technical Context

The KMPC8270CVRMIBA integrates a G2_LE microprocessor core with MMU and FPU, coupled to a dedicated Communications Processor Module (CPM) containing a 32-bit RISC coprocessor, 32 KB dual-port instruction RAM, and 32 KB dual-port data RAM. It supports independent clock domains: core PLL (2:1 to 8:1 multipliers) and CPM PLL (2:1 to 8:1 multipliers), enabling power/performance optimization.

Its communication subsystem includes three FCCs (each supporting Ethernet/HDLC/transparent modes), four SCCs (Ethernet/HDLC/UART/BISYNC), one USB 2.0 controller (host/slave), two SMCs, SPI, I²C, and one multichannel controller (MCC) supporting up to 128 × 64-kbps TDM channels - all managed without host CPU intervention via CPM microcode.

Key Specifications

Pinout & Package

KMPC8270CVRMIBA is housed in a 516-ball plastic ball grid array (PBGA), lead-free, RoHS-compliant VR package (JEDEC MO-251AC). Ball pitch is 1.0 mm; body size is 27 mm × 27 mm × 1.7 mm. Thermal pad on underside requires solder connection to PCB ground plane for thermal management.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC8275VR and MPC8280ZU, KMPC8270CVRMIBA delivers identical G2_LE core performance and CPM offload capability in a thermally optimized 516-PBGA package, while omitting higher-layer telecom features - making it the most cost-effective and power-efficient choice for deterministic serial-to-Ethernet protocol translation without ATM or encryption requirements.

Availability

KMPC8270CVRMIBA is available at Aetrix Electronics and suitable for DSLAM line cards, industrial protocol gateways, secure remote access appliances, and wireless backhaul baseband processors requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for KMPC8270CVRMIBA 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) is a fabless semiconductor company specializing in embedded processing, connectivity, and analog solutions for automotive, industrial, and networking markets.

KMPC8270CVRMIBA belongs to the PowerQUICC II family - designed specifically for cost-sensitive, thermally constrained communications infrastructure requiring hardware-accelerated protocol processing and real-time determinism without external co-processors.

FAQ

What is the maximum operating frequency of the KMPC8270CVRMIBA CPU core?

The KMPC8270CVRMIBA CPU core supports frequencies up to 450 MHz, achieved via internal PLL multiplication ratios (2:1 to 8:1) applied to the CLKIN input. The actual maximum stable frequency depends on voltage (VDD = 1.45–1.60 V), ambient temperature (0–70 °C), and thermal design - with documented operation at 450 MHz validated at 105 °C junction temperature in the MPC8280EC datasheet, which covers KMPC8270CVRMIBA.

Does KMPC8270CVRMIBA support USB 2.0 host and device modes simultaneously?

Yes, KMPC8270CVRMIBA includes a single USB 2.0 controller that supports both host and slave (device) modes, with independent endpoint configuration. In host mode, it supports control, bulk, interrupt, and isochronous transfers at 12 Mbps or 1.5 Mbps; in slave mode, it provides four endpoints with automatic retransmission on transmit error and CRC16/CRC5 checking - all implemented in hardware without CPU intervention.

What package type and pin count does KMPC8270CVRMIBA use?

KMPC8270CVRMIBA uses a 516-ball plastic ball grid array (PBGA) package with lead-free finish, designated as VR per Freescale's ordering nomenclature. It measures 27 mm × 27 mm × 1.7 mm with 1.0 mm ball pitch and includes an exposed thermal pad on the underside requiring solder connection to the PCB ground plane for thermal compliance.

Is KMPC8270CVRMIBA compatible with MPC8280 software and toolchains?

Yes, KMPC8270CVRMIBA shares the same G2_LE core, CPM architecture, memory map, and peripheral register layout as the MPC8280, enabling binary-compatible software execution. However, software must conditionally disable UTOPIA II, TC layer, and IMA features - which are absent in KMPC8270CVRMIBA but present in MPC8280 - to avoid undefined behavior or bus errors.

What are the key thermal design requirements for KMPC8270CVRMIBA in a 516-PBGA VR package?

KMPC8270CVRMIBA in the VR package has RθJB = 11 °C/W (junction-to-board) and RθJA = 27 °C/W (junction-to-ambient, natural convection, single-layer board). To maintain TJ ≤ 105 °C at 1.6 W dissipation, the PCB must use a 2s2p stack-up with thermal vias under the thermal pad, connect the pad directly to inner ground planes, and provide ≥2×47 µF bulk capacitance per supply rail with ≤0.5-inch trace lengths to each bypass capacitor.