NXP Semiconductors MPC852TVR100A

Overview

MPC852TVR100A from Freescale Semiconductor is a PowerPC architecture-based integrated communications controller featuring an MPC8xx 32-bit core operating up to 100 MHz, 66-MHz external bus, 1.8-V core/3.3-V I/O voltage, IEEE 802.3-compliant Fast Ethernet controller (FEC), and dual-port RAM for embedded networking applications including VoIP clients and WiFi access points.

For engineers reviewing the MPC852TVR100A datasheet, MPC852TVR100A pinout, MPC852TVR100A application, or MPC852TVR100A equivalent, this page delivers verified core frequency, bus timing, thermal resistance, power supply sequencing, and FEC interface specifications required for CPE router and industrial Ethernet controller design.

Technical Context

The MPC852TVR100A integrates three major modules on a unified internal bus: an MPC8xx core with 4-Kbyte instruction and data caches (two-way set-associative), a system integration unit (SIU) with JTAG debug interface and periodic interrupt timer, and a communication processor module (CPM) containing 8-Kbyte dual-port RAM and eight serial DMA channels.

It supports 2:1 CPU-to-bus ratio only at 80/100 MHz core frequencies, implements MMUs with 32-entry TLBs and multiple page sizes (4 Kbytes–8 Mbytes), and provides 5-V tolerant I/O pins including MII_TXEN, MII_MDIO, and all PA/PB/PC/PD port pins listed in Table 5 - while requiring strict VDDL ≤ VDDH sequencing during power-on reset.

Key Specifications

Pinout & Package

Package: 272-ball PBGA (Plastic Ball Grid Array), 27 mm × 27 mm, 1.27 mm pitch, RoHS-compliant. Pinout validated per MPC852TEC Rev. 4 mechanical drawings and signal assignment tables.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC852TVR100A, MPC866PZQ100B offers higher performance and USB but demands PCB redesign, while MPC823EVR100A reduces size and cost at the expense of integrated Ethernet - making MPC852TVR100A optimal for fixed-function Ethernet edge devices requiring minimal external components.

Availability

MPC852TVR100A is available at Aetrix Electronics and suitable for VoIP client terminals, Ethernet router control planes, and industrial Ethernet bridges requiring stable component supply across extended product lifecycles.

Supply support for MPC852TVR100A 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 processors and analog/mixed-signal ICs for automotive, industrial, and networking markets.

The MPC852TVR100A belongs to the PowerQUICC™ family of integrated communications controllers designed specifically for cost-sensitive, low-power Ethernet edge devices requiring single-chip integration of CPU, memory controller, FEC, and CPM.

FAQ

What is the maximum operating frequency of the MPC852TVR100A core and external bus?

The MPC852TVR100A core operates up to 100 MHz, and its external bus supports a maximum speed of 66 MHz. At 100 MHz core frequency, the device must operate in 2:1 bus mode (i.e., bus runs at 50 MHz), as confirmed in Section 2 Features of MPC852TEC Rev. 4. This constraint directly impacts memory controller timing and system-level throughput planning for the MPC852TVR100A.

Does the MPC852TVR100A support IEEE 802.3 Fast Ethernet natively?

Yes, the MPC852TVR100A includes an integrated Fast Ethernet Controller (FEC) supporting full-duplex 10/100 Mbps operation compliant with IEEE 802.3 standards. It interfaces via MII to external PHYs and supports SCC3/SCC4 for Ethernet framing, as documented in Sections 2 and 15 of the MPC852TEC specification. No external MAC is needed for basic Ethernet functionality in the MPC852TVR100A.

What are the mandatory power supply sequencing requirements for the MPC852TVR100A?

VDDL (core) must not exceed VDDH (I/O) during power-on reset or power-down, and both rails must stay within absolute maxima: VDDL ≤ 1.9 V and VDDH ≤ 3.465 V. Violation risks forward-biasing ESD diodes, causing reliability degradation. The MPC852TVR100A datasheet recommends using Schottky diodes (e.g., MUR420) in the sequencing circuit shown in Figure 3 to enforce this constraint.

How much on-chip memory does the MPC852TVR100A provide for code and data execution?

The MPC852TVR100A includes 4-Kbyte instruction cache and 4-Kbyte data cache, both two-way set-associative with LRU replacement. It also contains 8-Kbyte dual-port RAM accessible by both CPU and CPM for packet buffering and descriptor management. No on-chip SRAM or ROM is present - external memory is required for program storage and runtime variables in MPC852TVR100A systems.

Is the MPC852TVR100A pin-compatible with other PowerQUICC devices like the MPC860?

No, the MPC852TVR100A is not pin-compatible with the MPC860 series. Although it is a derivative of the MPC860 PowerQUICC family, the MPC852TVR100A uses a 272-ball PBGA package with distinct pin assignments, power domains (VDDL/VDDH separation), and signal multiplexing. Migration requires PCB redesign and firmware adaptation - confirmed by mechanical data in Section 16 of MPC852TEC Rev. 4 for the MPC852TVR100A.