NXP Semiconductors MC68302PV33C

Overview

MC68302PV33C from Freescale Semiconductor is a 32-bit integrated communications microcontroller featuring an MC68000-compatible CPU core, on-chip system integration including dual UARTs, timer modules, DMA controller, and programmable interrupt controller - all operating at 33 MHz with 5 V supply. It supports synchronous serial interfaces (SCP, IDL, GCI), parallel bus timing for external memory/peripherals, and real-time I/O control in industrial communication gateways.

For engineers reviewing the MC68302PV33C datasheet, MC68302PV33C pinout, MC68302PV33C application, or MC68302PV33C equivalent, this page delivers verified timing parameters, validated peripheral interface behavior, confirmed package mapping to PQFP-132, and direct alternative options for legacy industrial control and telecom edge node designs.

Technical Context

The MC68302PV33C implements a full MC68000 instruction set with 32-bit internal data paths and 24-bit address bus, enabling direct access to up to 16 MB of external memory. Its integrated system logic includes a Bus Interface Unit (BIU) with programmable wait-state generation, asynchronous and synchronous serial controllers (SCP/IDL/GCI), and two independent UARTs supporting RS-232/RS-485 framing.

Timing is governed by a 33 MHz crystal input (EXTAL), producing internal clocks including L1CLK (13.2–13.3 MHz), SPCLK (4–64 clock cycles), and RCLK1/TCLK1 (up to 13.2 MHz). All interface timing - AS/DS assertion, DTACK response, BERR handling, and interrupt pulse widths - is specified at 33 MHz with defined min/max values per Table 1.

Key Specifications

Pinout & Package

MC68302PV33C is housed in a 132-pin Plastic Quad Flat Package (PQFP) with 0.65 mm lead pitch, compliant with JEDEC MS-026. The package supports surface-mount assembly and thermal dissipation suitable for industrial temperature range operation (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68302PV33C, MC68332ACPV16 offers enhanced real-time I/O but sacrifices telecom-specific interfaces and clock speed, while Intel 80C188EB provides x86 toolchain continuity at the cost of higher BOM complexity and missing synchronous serial hardware - making MC68302PV33C uniquely suited for legacy telecom and industrial gateway designs requiring integrated 33 MHz timing and protocol acceleration.

Availability

MC68302PV33C is available at Aetrix Electronics and suitable for industrial protocol gateways, telecom edge nodes, embedded HMI controllers, and legacy test equipment requiring stable component supply and long-term obsolescence management.

Supply support for MC68302PV33C 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) was a leading designer of embedded processors and analog/mixed-signal ICs, specializing in automotive, industrial, and networking applications before its 2015 acquisition.

The MC68302 product line was developed as a single-chip solution for communications-intensive embedded systems, integrating CPU, memory interface, serial peripherals, and real-time I/O to replace multi-chip controller designs in telecom and industrial gateways.

FAQ

What is the maximum operating frequency of the MC68302PV33C?

The MC68302PV33C is rated for a maximum clock frequency of 33 MHz, as confirmed by its part number suffix "V33" and timing specifications in Table 1 (e.g., tcyc = 30 ns). All electrical and timing parameters - including AS/DS assertion, DTACK response, and interrupt pulse width - are guaranteed only at this frequency with 5 V ±10% supply. Operation above 33 MHz is not supported.

Does the MC68302PV33C support synchronous serial communication protocols?

Yes, the MC68302PV33C integrates three dedicated synchronous serial interfaces: SCP (Synchronous Communication Port), IDL (Integrated Digital Link), and GCI (Generic Circuit Interface). These are explicitly documented with timing parameters including SPCLK period (4–64 clks), L1CLK frequency (13.2–13.3 MHz), and sync setup/hold times - enabling native T1/E1, PCM, and digital loop carrier framing without external protocol ICs.

What package type is used for the MC68302PV33C?

The MC68302PV33C uses a 132-pin Plastic Quad Flat Package (PQFP) with 0.65 mm lead pitch, as indicated by the "PV" in the part number and confirmed in Freescale documentation. This package supports surface-mount assembly and is rated for industrial temperature range (–40°C to +85°C), distinguishing it from ceramic or PGA variants used in other MC68302 family members.

How does the MC68302PV33C handle external memory interfacing?

The MC68302PV33C implements a full Bus Interface Unit (BIU) with AS, DS, DTACK, BERR, and RW signals fully specified in Table 1 for 33 MHz operation. It supports programmable wait-state insertion via DTACK, allows asynchronous peripheral connection, and guarantees timing margins such as tchsl (3–15 ns) and tsl (≥60 ns), enabling direct interfacing with SRAM, EPROM, and peripheral ASICs without glue logic.

Is the MC68302PV33C still in production or available for new designs?

The MC68302PV33C is a legacy device discontinued by Freescale (now NXP), but Aetrix Electronics maintains traceable inventory and long-term supply support for ongoing production and repair programs. It remains suitable for sustaining engineering, legacy system refresh, and industrial equipment maintenance where functional equivalence and timing compatibility with original designs are required.