NXP Semiconductors MC68302PV16VC

Overview

MC68302PV16VC from Freescale Semiconductor is a single-chip integrated multi-protocol processor featuring an MC68000/MC68008 microprocessor core, a dedicated RISC-based communications processor (CP), and a system integration block (SIB). It operates at 16 MHz, integrates 1152 bytes of on-chip dual-port RAM, supports HDLC/SDLC, UART, Bisync, DDCMP, and Totally Transparent protocols via three full-duplex SCCs, and targets ISDN terminal adapters and data concentrators.

For engineers reviewing the MC68302PV16VC datasheet, MC68302PV16VC pinout, MC68302PV16VC application, or MC68302PV16VC equivalent, key selection criteria include its 16 MHz clock rating, triple SCC + dual SMC architecture, 100-pin TQFP package, HCMOS process technology, and support for concurrent protocol handling without CPU intervention.

Technical Context

The MC68302PV16VC implements a tightly coupled dual-processor architecture: the MC68000/MC68008 core handles general-purpose tasks while a separate RISC main controller in the CP manages serial communications autonomously. Its three Serial Communication Controllers (SCCs) each support HDLC/SDLC, UART, Bisync, DDCMP, and Totally Transparent modes with six dedicated serial DMA channels.

It includes two Serial Management Controllers (SMCs) for IDL and GCI channel management, a 1152-byte dual-port RAM accessible by both CPU and CP, and hardware features including an IDMA controller, interrupt controller with two operation modes, three timers (one software watchdog), and DRAM refresh logic - all coordinated through the System Integration Block.

Key Specifications

Pinout & Package

MC68302PV16VC is housed in a 100-pin Thin Quad Flat Pack (TQFP) package with 0.5 mm lead pitch and exposed thermal pad. Pin assignments follow Freescale's MC68302 Pin Assignment Table (Document Order No. MC68302UM/AD, Rev. 3), where pins are grouped into CPU bus (D0–D15, A0–A23), peripheral control (CS0–CS3, R/W, AS), serial interface (TxD1–TxD3, RxD1–RxD3, CLK1–CLK3), and system management (RESET, IRQ, HALT, BERR).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68LC302 and MC68EN302, the MC68302PV16VC uniquely balances triple SCC concurrency, dual SMC support for IDL/GCI, and 100-pin footprint - making it optimal for ISDN and multi-serial concentrator designs where Ethernet or ultra-low-power operation are not required.

Availability

MC68302PV16VC is available at Aetrix Electronics and suitable for ISDN terminal adapters, data concentrators, and telecom line cards requiring stable component supply across long-lifecycle industrial deployments.

Supply support for MC68302PV16VC 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 networking, automotive, and industrial markets.

The MC68302PV16VC belongs to Freescale's Integrated Multi-Protocol Processor family, engineered specifically for cost-sensitive, high-reliability communications equipment requiring concurrent serial protocol handling without external co-processors.

FAQ

What is the maximum operating frequency of the MC68302PV16VC?

The MC68302PV16VC is rated for a maximum clock frequency of 16 MHz, as specified in Freescale's MC68302 datasheet (Order No. MC68302EC, Rev. 5). This speed governs the instruction execution rate of the MC68000 core and the timing accuracy of all on-chip peripherals including the three SCCs and two SMCs. Operation above 16 MHz is not guaranteed and may result in undefined behavior or data corruption.

Does the MC68302PV16VC support Ethernet connectivity natively?

No, the MC68302PV16VC does not include native Ethernet MAC or PHY functionality. It relies on external Ethernet controllers or companion chips for 802.3 compliance. For integrated Ethernet, Freescale offered the MC68EN302 - a functional superset of the MC68302PV16VC with full IEEE 802.3 support - but that device uses a 144-pin TQFP and is not pin-compatible with the MC68302PV16VC.

How many serial protocols can the MC68302PV16VC run concurrently?

The MC68302PV16VC supports concurrent operation of up to three independent serial protocols - one per SCC - such as HDLC on SCC1, UART on SCC2, and Bisync on SCC3. Each SCC is fully programmable and operates autonomously under control of the RISC-based communications processor, enabling true hardware-level protocol isolation without CPU intervention.

What type of memory interface does the MC68302PV16VC provide?

The MC68302PV16VC provides a 24-bit address bus (A0–A23) and 16-bit data bus (D0–D15) compatible with standard SRAM, ROM, and EPROM devices. It includes four programmable chip-select outputs (CS0–CS3) with adjustable wait-state generation and address mapping logic, allowing flexible memory partitioning and direct connection to external memory without glue logic.

Is the MC68302PV16VC pin-compatible with other MC68302 derivatives?

Yes, the MC68302PV16VC shares the same 100-pin TQFP footprint and pinout as the MC68LC302 and MC68QH302 variants. However, functional differences exist: the MC68LC302 omits one SCC and both SMCs, while the MC68QH302 replaces two SCCs with a dual-channel SCC and adds pin-level compatibility but not full functional equivalence.