NXP Semiconductors MC68302PV16C

Overview

MC68302PV16C from Freescale Semiconductor is a 32-bit integrated communications processor combining a CPU32 core, system integration module (SIM), and time-division multiplexing (TDM) serial interface controller. It operates at 33 MHz, supports 16-bit external data bus width, and integrates UART, timer, interrupt controller, and DMA for embedded telecom and industrial control applications.

For engineers reviewing the MC68302PV16C datasheet, MC68302PV16C pinout, MC68302PV16C application, or MC68302PV16C equivalent, key selection criteria include its 33 MHz CPU32 core timing, 16-bit parallel bus interface with DTACK/AS/DS handshaking, TDM serial port support for PCM voice channels, and integrated SIM for memory management and peripheral control.

Technical Context

The MC68302PV16C implements the Motorola CPU32 instruction set architecture with 32-bit internal data path and 32-bit address capability. Its System Integration Module (SIM) provides chip select logic, interrupt vector generation, and programmable timers including input capture and output compare functions.

The device includes a Time-Division Multiplexing (TDM) serial interface supporting up to 32 time slots per frame, with configurable L1CLK (up to 13.3 MHz), L1SY1 sync, and SDS1/SDS2 signaling. It also integrates two asynchronous serial ports (UARTs) with RCLK1/TCLK1 clocking up to 13.2 MHz and full RTS/CTS/CD handshake support.

Key Specifications

Pinout & Package

MC68302PV16C is housed in a 132-pin Plastic Quad Flat Pack (PQFP) package with 0.65 mm lead pitch. Pin assignments are defined per Freescale's MC68302 Technical Summary and Pin Assignment Tables.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68302PV16C, MC68360VR66B offers higher clock speed and integrated QUICC communications engine but requires PCB redesign due to larger package and different pinout; MPC8260AZUUDB delivers orders-of-magnitude higher compute and security features but targets next-generation platforms rather than drop-in legacy replacement.

Availability

MC68302PV16C is available at Aetrix Electronics and suitable for telecom infrastructure, industrial protocol gateways, and embedded telemetry controllers requiring stable component supply across long-lifecycle programs.

Supply support for MC68302PV16C 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 for automotive, industrial, and networking markets.

The MC68302 belongs to Freescale's 68k-family communications processor line, engineered for cost-sensitive, real-time embedded systems requiring integrated serial I/O, deterministic timing, and minimal external components.

FAQ

What is the maximum operating frequency of the MC68302PV16C?

The MC68302PV16C is rated for a maximum system clock frequency of 33 MHz, as confirmed by timing specifications including t_cyc = 30 ns minimum cycle period and associated setup/hold constraints across all bus signals. This frequency governs CPU instruction execution rate, bus transfer bandwidth, and peripheral timing margins. The MC68302PV16C must be operated within this limit to ensure functional correctness per Freescale's published AC characteristics.

Does the MC68302PV16C support external memory expansion?

Yes, the MC68302PV16C supports external memory expansion via its 16-bit data bus, 24-bit address bus, and dedicated control signals including AS, DS, DTACK, and R/W. Its System Integration Module (SIM) provides programmable chip selects with adjustable timing, enabling direct connection to SRAM, EPROM, and peripheral devices without external glue logic. The MC68302PV16C's DTACK handshake allows seamless interfacing with memories of varying access speeds.

What serial communication interfaces are integrated into the MC68302PV16C?

The MC68302PV16C integrates two asynchronous serial ports (UARTs) with full modem control (RTS/CTS/CD), a Time-Division Multiplexing (TDM) serial interface supporting PCM voice channels, and a synchronous serial port (SCP) with configurable clocking. These interfaces operate independently with separate clock domains-RCLK1/TCLK1 for UARTs and L1CLK for TDM-allowing concurrent use in multi-protocol systems. All are managed directly by the MC68302PV16C's on-chip peripherals.

Is the MC68302PV16C pin-compatible with other members of the 68300 family?

No, the MC68302PV16C is not pin-compatible with other 68300-family devices such as the MC68306 or MC68360. It uses a unique 132-pin PQFP package with signal assignments specific to its integrated SIM, TDM interface, and dual UART layout. While functionally related, pinout differences require PCB redesign for substitution. The MC68302PV16C's pin configuration is documented exclusively in Freescale's MC68302 datasheet and technical summary.

What development tools were originally supported for the MC68302PV16C?

Freescale provided the M68K Development System (MDS) with VDSP and CodeWarrior toolchains, along with evaluation boards like the EVB68302 and third-party JTAG debuggers compatible with the CPU32 core. These tools enabled assembly/C firmware development, real-time debugging, and hardware validation of MC68302PV16C-based designs. Legacy documentation and tool archives remain accessible through NXP's product support portal for maintaining existing MC68302PV16C deployments.