NXP Semiconductors KMPC852TVR100A

Overview

KMPC852TVR100A from Freescale Semiconductor is a PowerPC architecture-based integrated communications processor combining an MPC8xx core, system integration unit (SIU), and communication processor module (CPM) in a single 272-pin PBGA package. It operates at up to 100 MHz core frequency with 66 MHz external bus speed, features 1.8-V core / 3.3-V I/O operation with 5-V tolerant pins, includes on-chip 4-Kbyte instruction and data caches, MMU, FEC, dual-port RAM, and supports Ethernet control applications including CPE equipment, VoIP clients, and WiFi access points.

For engineers reviewing the KMPC852TVR100A datasheet, KMPC852TVR100A pinout, KMPC852TVR100A application, or KMPC852TVR100A equivalent, key selection considerations include its 100 MHz MPC8xx core performance, 66 MHz bus timing compliance, 5-V tolerant I/O capability, integrated Fast Ethernet controller (FEC), and mandatory reset configuration requirements for boot code initialization.

Technical Context

The KMPC852TVR100A implements a single-issue 32-bit PowerPC-compatible core with 32 general-purpose registers, two-way set-associative 4-Kbyte instruction and data caches, and a 32-entry fully associative TLB supporting 4/16/512 Kbyte and 8 Mbyte page sizes. Its SIU provides clock synthesis, JTAG debug interface, periodic interrupt timer, and software watchdog functionality.

The CPM contains an independent RISC controller with 8-Kbyte dual-port RAM, eight serial DMA channels, two SCCs supporting HDLC/UART/Ethernet modes, one SMC, one SPI, and PCMCIA-ATA interface. The FEC supports IEEE 802.3 10-Mbps operation on SCC3/SCC4 with MII interface compatibility.

Key Specifications

Pinout & Package

Package: 272-ball Plastic Ball Grid Array (PBGA), 27 mm × 27 mm, 1.27 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with KMPC852TVR100A, MPC855TVR100B adds USB and 100-Mbps FEC but requires PCB redesign, while MPC860PZQ100B offers greater thermal headroom and RAM but omits PCMCIA - both serve adjacent niches rather than direct replacements.

Availability

KMPC852TVR100A is available at Aetrix Electronics and suitable for home gateway CPE, VoIP terminal adapters, WiFi access point controllers, and industrial Ethernet bridges requiring stable component supply across long-lifecycle embedded deployments.

Supply support for KMPC852TVR100A 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.

The KMPC852TVR100A belongs to the PowerQUICC™ family of integrated communications processors designed specifically for cost-sensitive, low-power embedded networking applications requiring combined CPU, CPM, and FEC functionality in a single die.

FAQ

What is the maximum operating junction temperature for KMPC852TVR100A?

The KMPC852TVR100A has a maximum junction temperature (Tj) of 95°C for standard operation and 100°C for extended temperature grade configurations. This limit is enforced by thermal resistance values (RθJA = 32°C/W on 4-layer board) and must be maintained through proper heatsinking, airflow, and board-level thermal design to prevent reliability degradation or functional failure.

Does KMPC852TVR100A support 100-Mbps Ethernet operation?

No, KMPC852TVR100A supports only 10-Mbps IEEE 802.3 Ethernet operation via its Fast Ethernet Controller (FEC) on SCC3 and SCC4. It does not implement 100-Mbps MII timing or PHY interface capabilities. For 100-Mbps support, consider the MPC855TVR100B or MPC860PZQ100B as alternatives with enhanced FEC modules.

What power supply sequencing is required for KMPC852TVR100A?

KMPC852TVR100A requires strict power sequencing: VDDL (core) must not exceed VDDH (I/O) during power-on or power-down, and both supplies must remain within 100 mV differential. Violation risks forward-biasing ESD diodes and permanent damage. A dedicated sequencing circuit using MUR420 and 1N5820 diodes is recommended per Freescale's hardware specification document MPC852TEC Rev. 4.

How is the KMPC852TVR100A reset configuration initialized?

KMPC852TVR100A requires mandatory reset configuration: if HRCW is enabled, HRCW[DBGC] must be set to binary X1 and SIUMCR[DBGC] programmed to match in boot code after HRESET deassertion. If HRCW is disabled, only SIUMCR[DBGC] = X1 is required. Failure to configure these registers prevents proper debug interface operation and may cause boot failure.

Which pins on KMPC852TVR100A are 5-V tolerant?

The KMPC852TVR100A has 5-V tolerant pins including PA[0:3], PA[8:11], PB15, PB[24:25], PB[28:31], PC[4:7], PC[12:13], PC15, PD[3:15], TDI, TDO, TCK, TRST, TMS, MII_TXEN, and MII_MDIO. These pins tolerate up to 5.5 V but must not exceed VDDH + 2.5 V in any condition - a critical constraint during power-up, power-down, and normal operation.