NXP Semiconductors MPC853TVR100A

Overview

MPC853TVR100A from Freescale Semiconductor is a PowerPC architecture-based integrated communications controller (PowerQUICC™) featuring an MPC8xx core operating up to 100 MHz, 66-MHz external bus support, 1.8-V core / 3.3-V I/O voltage operation with 5-V TTL compatibility, and integrated Fast Ethernet Controller (FEC), CPM, and SIU - deployed in Ethernet routers, VoIP clients, Wi-Fi access points, and CPE equipment.

For engineers reviewing the MPC853TVR100A datasheet, MPC853TVR100A pinout, MPC853TVR100A application, or MPC853TVR100A equivalent, this page delivers verified core frequency, bus timing, thermal resistance (RθJA = 49°C/W on single-layer board), DC electrical specs (VDDL: 1.7–1.9 V, VDDH: 3.135–3.465 V), and mandatory reset configuration requirements per Freescale's Advance Information specification Rev. 1 (Dec 2004).

Technical Context

The MPC853TVR100A implements a single-issue 32-bit MPC8xx core with 4-Kbyte instruction and 4-Kbyte data caches (two-way set-associative, 128 sets each), MMU with 32-entry fully associative TLBs, and support for 4/16/512 Kbyte and 8 Mbyte page sizes. It integrates a System Integration Unit (SIU) with clock synthesizer, PIT, watchdog, IEEE 1149.1 JTAG interface, and a Communications Processor Module (CPM) with 8-Kbyte dual-port RAM and eight SDMA channels.

Its bus architecture supports dynamic 8/16/32-bit data width, 32 address lines, eight memory banks with programmable wait states (up to 30), glueless interfacing to DRAM, SRAM, Flash, and EPROM, and Fast Ethernet Controller compliant with IEEE 802.3 at 10 Mbps via SCC3/SCC4. The device operates in 1:1 (core = bus) or 2:1 (core = 2× bus) modes, with 100-MHz core requiring 2:1 mode exclusively.

Key Specifications

Pinout & Package

The MPC853TVR100A is packaged in a 352-pin PBGA (Plastic Ball Grid Array) with 1.27-mm pitch, RoHS-compliant, and thermally enhanced design optimized for board-level heat dissipation via thermal balls connected to ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC853TVR100A, MPC860TVR100B offers broader protocol support and higher Ethernet speed at increased complexity and cost, while MPC855TVR100D adds USB connectivity with minimal thermal trade-off - both retain the same 100-MHz MPC8xx core but extend functionality beyond the base PowerQUICC™ feature set.

Availability

MPC853TVR100A is available at Aetrix Electronics and suitable for Ethernet router control, VoIP client terminals, Wi-Fi access point baseband, and CPE equipment requiring stable component supply across extended product lifecycles.

Supply support for MPC853TVR100A 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 Power Architecture™ processors for networking, automotive, and industrial embedded systems before its 2015 acquisition.

The MPC853TVR100A belongs to the PowerQUICC™ family - engineered specifically for cost-sensitive, low-power communications controllers in broadband CPE, VoIP, and managed Ethernet infrastructure where integration of CPU, FEC, CPM, and memory controller reduces system-level complexity.

FAQ

What is the maximum supported core frequency for MPC853TVR100A, and what bus mode is required?

The MPC853TVR100A supports a maximum core frequency of 100 MHz, which requires operation exclusively in 2:1 bus mode (core clock = 2 × external bus clock). In this mode, the external bus runs at 50 MHz. Attempting 100-MHz core operation in 1:1 mode violates the device specification and will result in undefined behavior. This constraint is explicitly defined in Freescale's MPC853T Hardware Specification Rev. 1, Section 2 (Features).

Does MPC853TVR100A support 100-Mbps Ethernet, or is it limited to 10 Mbps?

The MPC853TVR100A supports only 10-Mbps Ethernet via its Fast Ethernet Controller (FEC) and SCC3/SCC4 interfaces, as confirmed in Section 2 (Features) and Figure 1 of the Freescale MPC853T Hardware Specification. It does not implement MII timing or PHY interface features required for 100-Mbps operation. For 100-Mbps capability, designers must select the MPC860 series or later PowerQUICC™ derivatives.

What are the mandatory power supply sequencing requirements for MPC853TVR100A?

MPC853TVR100A requires strict power sequencing: VDDL must never exceed VDDH during power-up or power-down, and both supplies must remain within absolute maxima (VDDL ≤ 1.9 V, VDDH ≤ 3.465 V). Violation risks forward-biasing internal ESD diodes, causing cumulative damage. Freescale recommends using Schottky diodes (e.g., MUR420) in the sequencing circuit shown in Figure 2 of the specification to enforce compliance.

Which pins on MPC853TVR100A are 5-V tolerant, and what is the voltage limit relative to VDDH?

The MPC853TVR100A 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. For these pins, input voltage must not exceed VDDH + 2.5 V at any time - including power-up, power-down, and normal operation - and must remain ≤ 5.5 V absolute maximum, per Table 5 and Section 8 of the hardware specification.

What reset configuration registers must be initialized after HRESET deassertion for MPC853TVR100A?

After HRESET deassertion, MPC853TVR100A requires mandatory initialization of MBMR[GPLB4DIS] = 0, PAPAR[4:7]/PAPAR[12:15] = 0, PADIR[4:7]/PADIR[12:15] = 1, PBPAR[14]/PBPAR[16:23]/PBPAR[26:27] = 0, PBDIR[14]/PBDIR[16:23]/PBDIR[26:27] = 1, PCPAR[8:11]/PCPAR[14] = 0, and PCDIR[8:11]/PCDIR[14] = 1, as specified in Table 6 of the hardware spec. Failure to program these registers causes undefined I/O behavior and potential system lockup.